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Notable events involving Tuna include:

The history of HMS Tuna as compiled on this page is extracted from Tuna's patrol reports and logbooks. Corrections and details regarding information from the enemy's side (for instance the composition of convoys attacked) is kindly provided by Mr. Platon Alexiades, a naval researcher from Canada.

This page was last updated in September 2018.

1 Aug 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) begins a period of trials and training off the Scottish west coast. Today she shifted from her builders yard at Greenock to Arrochar where she was to conduct exercises and torpedo discharge trials. (1)

2 Aug 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) conducted execises in Loch Long. (1)

3 Aug 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) conducted execises in Loch Long. (1)

5 Aug 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) conducted execises in Loch Long. (1)

9 Aug 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) conducted torpedo discharge trials of Arrochar. (1)

10 Aug 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) conducted torpedo discharge trials of Arrochar. (1)

12 Aug 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) conducted torpedo discharge trials of Arrochar. (1)

13 Aug 1940
Having completed her torpedo discharge trials, HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN), shifted from Arrochar to Rothesay. (1)

16 Aug 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) conducted practice attacks on HMS Breda (Capt.(Retd.) A.E. Johnston, RN) in the Clyde area. (1)

18 Aug 1940
During the night of 18/19 August 1940, HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN), conducted practice attacks on HMS Breda (Capt.(Retd.) A. E. Johnston, RN) in the Clyde area. (1)

21 Aug 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) departed Rothesay for Rosyth. She made the passage together with the Dutch submarine HrMs O 10 (Lt. G. Quint, RNN(R)) that was to proceed to Dundee. They were escorted by the Dutch torpedo boat HrMs Z 6 (Lt.Cdr. A.C. Lunbeck, RNN). (1)

26 Aug 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) arrived at Rosyth. (1)

30 Aug 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) departed from Rosyth for her 1st war patrol. This is a work-up patrol in the North Sea.

For the daily and attack positions of HMS Tuna during this patrol see the map below.

(2)

1 Sep 1940
At 0150 hours HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) fired torpedoes at ' what is identified as ' a submarine in the North Sea about 175 nautical east of Dundee, Scotland in position 56°09'N, 02°15'E.

(All times are zone 1)
0147 hours - Sighted a U-boat bearing red 20 showing an occasional dim white flashing light.

0150 hours - In position 56°09'N, 02°15'E fired four torpedoes from a range of 3000 yards.

0152 hours - Dived. While in the process of doing so a loud explosion was heard.

0200 hours - Three more explosions were heard. These must have been the remaining torpedoes hitting the bottom at the end of their run.

0321 hours - Surfaced. Found nothing in sight but noticed a strong smell of oil fuel.

Note: No German U-boat was operating in this area around this time. It's is not clear what Tuna attacked, if anything at all. As Tuna was on a work-up patrol her crew was rather 'green' and possibly a bit over-excited. (2)

5 Sep 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) fires three torpedoes at a suspected U boat contact. No hits were obtained. She also reports being fired upon by the enemy U boat with four torpedoes.

Later this day Tuna ended her 1st war patrol at Rosyth.

(All times are zone 1)
4 September 1940
2200 hours - The Officer of the Watch reported a U-boat diving ahead. As visibility through the periscope was nil, Tuna commenced 'hunting' the U-boat with her Asdic.

2240 hours - In position 56°26'N, 00°43'W the contact was at 2700 yards.

2302 hours - Range was now 900 yards. The target was thought to be on the bottom.

2305 hours - A signal was sent to base asking if destroyers could be sent out to take over the hunt on the enemy. Meanwhile Tuna patrolled over the position 'pinging' throughout in an endeavour to keep the enemy 'down'.

5 September 1940
0243 hours - Contact was now at 2700 yards but altered course towards and closed to 2000 yards.

0250 hours - In position 56°17'N, 02°20W fired three torpedoes at the contact that was right ahead. Depth settings of the torpedoes was 44, 30 and 24 feet.

0251 hours - A torpedo track was thought to be passing close down the port side from astern. Altered course to comb the track. Three more torpedo tracks now passed close down the starboard side. It was now thought that there were two U boats nearby, one ahead and one astern.

0254 hours - Withdrew from the area as this was a situation far too dangerous. Set course for Rosyth and speed up to full ahead on both engines.

0344 hours - Sent signal that Tuna was attacked by an enemy submarine with four torpedoes.

0708 hours - Passed HMS Jackal and HMS Vortigern off May Island. Passed information to them. These destroyers had been sent out to sea to hunt the enemy submarine reported by Tuna.

1039 hours - Secured alongside HMS Forth at Rosyth.

Note: As for the attack on a suspected U boat of 1 September, there was no German U-boat operating in this area. It is not clear what Tuna was attacking or was attacked by. (2)

6 Sep 1940
The submarine depot ship HMS Forth (Capt. G.C.P. Menzies, RN) and the submarine HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) departed from Rosyth for Holy Loch. They were escorted by the destroyers HMS Jackal (Cdr. C.L. Firth, RN) and HMS Jaguar (Lt.Cdr. J.F.W. Hine, RN).

They arrived safely in the Clyde at 0600/9. (3)

9 Sep 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) arrived at Holy Loch. (4)

15 Sep 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) departed from Holy Loch for her 2nd war patrol. She was ordered to patrol in the Bay of Biscay.

Passage south through the Irish Sea was made together with HMS Talisman (Lt.Cdr. P.S. Francis, RN) that was to proceed to Portsmouth. They were escorted by HMS Rosemary (Lt.(Retd.) H.V. Wheeler, RN).

For the daily and attack positions of HMS Tuna during this patrol see the map below.

(2)

22 Sep 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) torpedoed and sank the German merchant Tirrana (7230 GRT, built 1938, former Norwegian Tirrana (offsite link) in the Bay of Biscay south of the Gironde estuary, about 15 nautical miles south-west of Soulac-sur-Mer, France in position 45°19'N, 01°20'W.

Tirranna was captured by the German armed merchant cruiser Atlantis in the Indian Ocean about 675 nautical miles east-south-east of Port Louis, Mauritius in position 22°40'S, 69°20'E on 10 June 1940.

(All times are zone 1)
1145 hours - Sighted merchant ship. Commenced attack. No escort was present.

1232 hours - Fired 4 torpedoes from 900 yards. Three hits were observed through the periscope. The target was seen to sink at 1239 hours. (2)

24 Sep 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) torpedoed and sank the German catapult ship Ostmark (1281 GRT, built 1936) in the Bay of Biscay about 35 nautical miles South-West of St. Nazaire, France in position 47°01'N, 03°02'W.

(All times are zone 1)
0421 hours - Sighted three dark objects on the port bow. Altered course and started attack. The contacts were identified as a merchant vessel escorted by two destroyers.

0435 hours - Fired six torpedoes from 8000 yards against the merchant. Went deep upon firing. One of the destroyers was heard to come towards, most likely running down the torpedo tracks. One hit was obtained on the target 6min, 45sec after firing the last torpedo.

No counter attack followed. Tuna set course to the South to resume her patrol off the Gironde.

Note: The Ostmark was escorted by the German minesweepers M 6 and M 12 (2)

2 Oct 1940
At 0700 hours, HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN), made rendes-vous with HMS Tribune (Lt. E.F. Balston, RN) and their escort towards Holy Loch, HMS Cutty Sark (Cdr.(Retd.) R.H. Mack, RN). (2)

3 Oct 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) ended her 2nd war patrol at Holy Loch. (2)

16 Oct 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) conducted exercises in the Clyde area. These included a practice attack on HMS Cachalot (Lt.Cdr. J.D. Luce, RN). (5)

18 Oct 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) conducted exercises in the Clyde area. (5)

19 Oct 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) conducted exercises in the Clyde area. (5)

23 Oct 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, RN) departed from Holy Loch for her 3rd war patrol. She is to patrol in the Bay of Biscay.

During the passage south through the Irish Sea she was escorted by HMS Troubadour (Cdr.(ret) D.H. Milward, DSC, RNR) until 0240/25.

For the daily positions of HMS Tuna during this patrol see the map below.

(2)

13 Nov 1940
At 0800 hours, HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN), made rendes-vous with her escort towards Holy Loch, HMS Arsenal (Skr. C.R. Radford, RNR). (2)

15 Nov 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) ended her 3rd war patrol at Holy Loch. (2)

20 Nov 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) shifted from Holy Loch to Ardrossan. (6)

21 Nov 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) is docked at Ardrossan. (6)

24 Nov 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) is undocked at Ardrossan and immediately returns to Holy Loch. (6)

29 Nov 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) and HMS Tribune (Lt. E.F. Balston, DSO, RN) both conducted night exercises in the Clyde area during the night of 29/30 November 1940 making practice attacks on each other. (7)

12 Dec 1940
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) departed from Holy Loch for her 4th war patrol. She was ordered to patrol in the Bay of Biscay. During the passage south through the Irish Sea she was escorted by HMS White Bear (Cdr.(Retd.) C.C. Flemming, RN) until 0200/14.

[No logs are available for this period so no map of this patrol by HMS Tuna can be displayed.] (2)

18 Dec 1940
At 0430 hours, HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN), attacks the Italian submarine Brin with torpedoes and gunfire in the Bay of Biscay about 55 nautical miles east of the Gironde estuary in position 45°28'N, 02°27'W. The Italian submarine escapes unharmed.

At 2314 hours, HMS Tuna, sank the French tug (in German service) Chassiron (172 GRT, built 1901) with gunfire about 25 nautical miles west-south-west of the Gironde estuary in position 45°28'N, 01°38'E.

0403 hours (time zone unknown, not mentioned in patrol report and no log available) Sighted a dark object bearing Green 3°. The object was soon indentified as a submarine conning tower. As HMS Usk was just 20 nautical miles to the North of Tuna and the silhouette resembled that of a U-class submarine a challenge was made. The reply was unreadable. As it was still thought it was Usk, The silhouette did not resemble an Italian submarine and a German U-boat was not expected in pass through this area, a second challenge was made. No reply came on the second challenge and the target turned away.

0430 hours - In position 45°28'N, 02°27'W fired six torpedoes from 1500 yards. The target was not hit, the torpedoes missed on either side. When it was seen that the torpedoes had missed gun action was ordered. After the third round it was thought that a hit was obtained. The enemy increased to full speed and ran for the Gironde. No more hits were obtained and as the enemy submarine was faster range soon increased.

0510 hours - Fired one torpedo but missed.

0520 hours - Fired another torpedo but missed again. Soon after a torpedo wake was sighted, the enemy had fired a stern torpedo but this also missed, actually Brin had fired two stern torpedoes.

0523 hours - A darkened object was reported bearing Red 120°. Almost simultaneously the enemy submarine was seen to make her identification signal. /it was thought that this new contact was the escort for the enemy submarine to the Gironde. Tuna turned away and dived to 200 feet. By HE it was noticed that there were two escort vessels in the area. They remained in the area to hunt Tuna but never made contact and no depth charges were dropped.

----------------------------------------------------------------------

2254 hours - An object was sighted bearing Red 20°. Course was altered towards. Started attack. The target was considered to be an A/S vessel.

2314 hours - In position 45°28'N, 01°38'E fired 2 torpedoes set to 4 feet. Range was 1200 yards. The first torpedo was seen to miss ahead. The second that was supposed to hit ran off track and missed astern. The enemy was now seen to be an armed tug. Gun action was ordered and hits were obtained quickly. 19 Rounds were fired for at least five hits. She was now left on fire fore and aft. She was also settling and down in the water. Tuna cleared the area to the South-West. (2)

2 Jan 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) ended her 4th war patrol at Holy Loch. During the passage north through the Irish Sea, Tuna had been escorted by HMS Cutty Sark (Cdr.(Retd.) R.H. Mack, RN). (2)

29 Jan 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) departed from Holy Loch for her 5th war patrol. She was ordered to patrol of the Azores.

Passage south through the Irish Sea was made together with HMS Snapper (Lt. G.V. Prowse, RN). They were escorted by HMS La Capricieuse (Lt.Cdr. G.W. Dobson, RNR).

No logs are available for this period so no map of this patrol can be displayed. (2)

16 Feb 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) ended her 5th war patrol at Gibraltar. (2)

20 Feb 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) departed from Gibraltar for a convoy escort mission. She joins convoy HG 54. (2)

5 Mar 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) leaves convoy HG 54 and proceeded to Holy Loch. (2)

8 Mar 1941
At 1217 hours, HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN), made rendes-vous with her escort towards Holy Loch, the Free French minesweeper FFS La Moqueuse. (2)

9 Mar 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) arrived at Holy Loch. (2)

22 Mar 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) departed from Holy Loch for her 6th war patrol. She was ordered to patrol in the Bay of Biscay.

Passage south through the Irish Sea was made together with HMS Torbay (Lt.Cdr. A.C.C. Miers, RN), HMS Taku (Lt. J.F.B. Brown, RN) and HMS L 26 (Lt. S.L.C. Maydon, RN). They were escorted by the Free French minesweeper FFS La Moqueuse.

No logs are available for this period so no map of this patrol can be displayed. (2)

13 Apr 1941
At 0445 hours, HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN), made rendes-vous with her escort towards Holy Loch, HMS La Capricieuse (Lt.Cdr. G.W. Dobson, RNR). One hour later HMS Tigris (Lt.Cdr. H.F. Bone, DSO, DSC, RN) also joined for the passage north. (2)

14 Apr 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) ended her 6th war patrol at Holy Loch. (2)

30 Apr 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) is docked at Troon. (8)

6 May 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) is undocked at Troon. (8)

18 May 1941
Around 0400B/18, near Trevose Head, HMS Trident (Lt.Cdr. G.M. Sladen, DSC, RN), made rendezvous with HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN), which was coming from Falmouth with their escort towards Holy Loch, HMS La Capricieuse (Lt.Cdr. G.W. Dobson, RNR).

1 Jun 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) departed from Holy Loch for her 7th war patrol. She was ordered to patrol in the Bay of Biscay.

Passage south throuh the Irish Sea was made together with the Free French submarine FFS Rubis (Lt. H.L.G. Rousselot). They were escorted until 1430/3 by HMS Breda (Capt.(Retd.) A. E. Johnston, RN).

No logs are available for this period so no map of this patrol can be displayed. (2)

19 Jun 1941
Between 0400 and 0500 hours, HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN), made rendes-vous with HMS Trident (Lt.Cdr. G.M. Sladen, DSC, RN) and their escort towards Holy Loch, HMS Cutty Sark (Cdr.(Retd.) R.H. Mack, RN). (2)

20 Jun 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) ended her 7th war patrol at Holy Loch. (2)

7 Jul 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) departed from Holy Loch for her 8th war patrol. She was ordered to patrol in the Bay of Biscay.

During the passage south through the Irish Sea she was escorted by HMS La Capricieuse (Lt.Cdr. G.W. Dobson, RNR) until 2400/8.

No logs are available for this period so no map of this patrol can be displayed. (2)

9 Jul 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) is attacked in error in position 49°16'N, 08°58'W by a British aircraft (217Sq./Y) resulting in some minor damage. Tuna was outside her area due to a small navigational error. (2)

10 Jul 1941
While on patrol in the Bay of Biscay HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) fires two torpedoes at a submerged Asdic contact steering approximate course 191°, of what is thought to be an enemy submarine in position 46°00'N, 09°40'W. The torpedoes missed their target. No Axis submarines were however reported to be near that position at that date, so that attack was most likely against a non-sub target (if any).

(time zone unknown, not mentioned in patrol report and no log available)
10 July 1941
2208 hours - In position 46°00'N, 09°40'W the Port after lookout sighted through his glasses a periscope bearing Red 130°, distance 1000 yards. The Officer of the Watch turned hard to Starboard and dived. Tuna was in contact with the enemy submarine with Asdic while submerged.

2306 hours - Fired one torpedo at a contact 500 yards ahead. The torpedo was set to 32 feet. The torpedo missed and it was thought that the target had gone deep.

For the next two hours the target was hunted by Asdic.

11 July 1941
0114 hours - Fired one torpedo at the target that now was steady bearing 191°. Missed.

0115 hours - Surfaced and left the area full speed ahead. (2)

19 Jul 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) fires 6 torpedoes at the German tanker Benno (8306 GRT, built 1939, former Norwegian Ole Jacob, offsite link) escorted by the German minesweepers M 18, M 25, M 27 and M 30 60 nautical miles north-west of the Gironde estuary in position 45°21'N, 02°23'W. Although six detonations were heard all torpedoes missed their target(s).

The Ole Jacob was captured on 10 November 1940 by the German armed merchant cruiser Atlantis in the Bay of Bengal in position 06°30'N, 90°13'E.

(time zone unknown, not mentioned in patrol report and no log available)
0048 hours - A darkened object was sighted and HE was heard bearing Green 04°.

0050 hours - Increased to full speed and closed. After about 10 minutes two destroyers could be distinguished ahead of the target. Shortly afterwards another destroyer was seen astern as well as another unidentified vessel.

In position in position 45°21'N, 02°23'W fired six torpedoes at the target from about 6000 yards.

0114 hours - Dived. Half a minute later a loud explosion was heard, followed shortly afterwards by another. Tuna went to 150 feet and rigged for depth charging but nothing further happened and Tuna surfaced about 1,5 hours after the attack and cleared the area. (2)

28 Jul 1941
At 0435 hours, HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN), made rendes-vous with her escort north through the Irish Sea, HMS La Capricieuse (Lt.Cdr. G.W. Dobson, RNR). (2)

29 Jul 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) ended her 8th war patrol at Holy Loch. (2)

15 Aug 1941
HMS Proteus (Lt.Cdr. P.S. Francis, RN) conducted exercises in the Clyde area with HMS White Bear (Cdr.(Retd.) C.C. Flemming, RN), HMS Oberon (Lt.Cdr. E.F. Pizey, DSC, RN) and HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN). These included night exercises. (9)

20 Aug 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) departed from Holy Loch for her 9th war patrol. She was ordered to patrol in the Bay of Biscay.

During the passage south through the Irish Sea she was escorted by HMS White Bear (Cdr.(Retd.) C.C. Flemming, RN) until 2215/21.

No logs are available for this period so no map of this patrol can be displayed. (2)

7 Sep 1941
Around 2300A/7, HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN), made rendez-vous with HMS Trusty (Lt.Cdr. W.D.A. King, DSO, DSC, RN) and HMS Breda (Capt.(Retd.) A. E. Johnston, RN). Tuna and Breda then proceeded in company towards Holy Loch and Trusty set course for Gibraltar. Tuna however soon lost contact with Breda due to thick fog. (2)

9 Sep 1941
HMS Tuna (Lt.Cdr. M.K. Cavenagh-Mainwaring, DSO, RN) ended her 9th war patrol at Holy Loch. Tuna was given a short refit before she would proceed on her next patrol. (2)

12 Nov 1941
HMS Tuna (Lt. M.B. St. John, RN) departed from Holy Loch for her 10th war patrol. She is to patrol off the Norwegian Coast. Tuna was escorted out by HMS Hibiscus (Lt. H. Roach, RNR) until 0100/14.

No logs are available for this period so no map of this patrol can be displayed. (2)

30 Nov 1941
At 1030 hours, HMS Tuna (Lt. M.B. St. John, RN), made rendez-vous with her escort towards Holy Loch, HMS White Bear (Cdr. (Retd.) C.C. Flemming, RN). (2)

2 Dec 1941
HMS Tuna (Lt. M.B. St. John, RN) ended her 10th war patrol at Holy Loch. (2)

13 Dec 1941
HMS Tuna (Lt. M.B. St. John, RN) departed from Holy Loch for Scapa Flow. She was ordered to patrol off the Norwegian Coast. She is part of a special mission. For this she has to proceed to Scapa Flow first before departing for patrol from that base on 23 December. The special mission in question was part of Operation Archery, a commando raid on Vaagso. Tuna was to act as navigational beacon for the surface ships involved in this operation. (2)

15 Dec 1941
HMS Tuna (Lt. M.B. St. John, RN) arrived at Scapa Flow. (2)

23 Dec 1941
HMS Tuna (Lt. M.B. St. John, RN) departed Scapa Flow for her 11th war patrol. She was part of Operation Archery, a commando raid on Vågsøy, Norway. Tuna was to act as navigational beacon for the surface ships involved in this operation.

The raid on Vågsøy was carried out by the British Light cruiser HMS Kenya (Capt. M.M. Denny, RN, flying the flag of Rear-Admiral Burrough, RN), the British destroyers HMS Onslow (Capt. H.T. Armstrong, DSC and Bar, RN), HMS Oribi (Lt.Cdr. J.E.H. McBeath, DSO, RN), HMS Offa (Lt.Cdr. R.A. Ewing, RN), HMS Chiddingfold (Lt. L.W.L. Argles, RN) and the landing ships Prince Charles (A/Cdr. W.R. Fell, DSC, OBE, RN) and Prince Leopold (Lt.Cdr. W.S. Byles, RD, RNR). (2)

24 Dec 1941

Operation Archery.

Commando raid against the Norwegian island of Vågsøy.

Around 2100A/24, the light cruiser HMS Kenya (Capt. M.M. Denny, CB, RN, flying the flag of Rear-Admiral H.M. Burrough, CB, RN), destroyers HMS Onslow (Capt. H.T. Armstrong, DSC and Bar, RN), HMS Offa (Lt.Cdr. R.A. Ewing, RN), HMS Oribi (Lt.Cdr. J.E.H. McBeath, DSO, RN), the escort destroyer HMS Chiddingfold (Lt. L.W.L. Argles, RN), and the landing ships HMS Prince Charles (A/Cdr. W.R. Fell, DSC, OBE, RN) and HMS Prince Leopold (Lt.Cdr. W.S. Byles, RD, RNR) departed Scapa Flow for operation Archery. First they were to proceed to Sullom Voe where they arrived around 1330A/25. and Maaloy Island. The Force arrived at Sullom Voe on the 25th.

Heavy weather had been encountered on the passage to Sullom Voe and the operation was postponed 24 hours so that some weather damage to the landing ships could be made good.

The raiding force departed Sullom Voe around 1600A/26.

The arrived off the Vaagsfiord in perfect weather around 0740A/27. At 0640A/27 they had made rendezvous with the submarine HMS Tuna (Lt. M.B. St. John, RN) which acted as beacon.

Enemy positions were bombarded and troops were landed.

The enemy was caught by surprise but resistance was however stiff as an enemy unit of mountain troops was present at Måløy for a rest.

HMS Kenya engaged the enemy shore battery at Rugsundöy. She was also hit in return.

HMS Onslow and HMS Oribi sank the German patrol vessel V 5108 / Föhn (207 GRT, built 1911, former Norwegian whaler Hadarøy) in Måløy-Sund. The merchant vessels Reimar Edzard Fritzen (2936 GRT, built 1923), Norma (2258 GRT, built 1911, former Dutch Calypso) and Anita L.M. Russ (1712 GRT, built 1926) and Eismeer (1003 GRT, built 1941, former Dutch Duiveland) were either sunk or driven on the rocks.

HMS Offa and HMS Chiddinfold sank the German patrol vessel V 5102 / Donner (223 GRT, built ?) and the merchant vessel Anhalt (4621 GRT, built 1922).

The commandoes commenced to retreat back to the landing ships around 1400A/27.

The raiding force returned to Scapa Flow around 1600A/28. (10)

27 Dec 1941
HMS Tuna (Lt. M.B. St. John, RN) performed her beacon duties for operation Archery. (2)

29 Dec 1941
At 0915 hours, HMS Tuna (Lt. M.B. St. John, RN), made rendes-vous with her escort towards Holy Loch, HMS White Bear (Cdr.(Retd.) C.C. Flemming, RN). (2)

30 Dec 1941
HMS Tuna (Lt. M.B. St. John, RN) ended her 11th war patrol at Holy Loch. (2)

14 Jan 1942
HMS Tuna (Lt. M.B. St. John, RN) departed from Holy Loch for her 12th war patrol. She was ordered to patrol in the Bay of Biscay.

During passage south through the Irish Sea she was escorted by HMS White Bear (Cdr.(Retd.) C.C. Flemming, RN) until 2120/16.

No logs are available for this period so no map of this patrol can be displayed. (2)

18 Jan 1942
While on patrol in the Bay of Biscay HMS Tuna (Lt. M.B. St. John, RN) intercepts the French fishing vessel Juliette / Lorient 3476. The Skipper is taken on board for interrogation. Some of the papers are copied or confiscated. (2)

21 Jan 1942
HMS Tuna (Lt. M.B. St. John, RN) ended her 12th war patrol at Falmouth. Tuna was escorted in by HMS Scarron (T/Lt. R.A.A. Robertson, RNVR).

Tuna departed Falmouth for Holy Loch later that same day. She made the passage together with the Free French submarine FFS Rubis. They were escorted by HMS White Bear (Cdr.(Retd.) C.C. Flemming, RN). (2)

23 Jan 1942
HMS Tuna (Lt. M.B. St. John, RN) arrived at Holy Loch. (2)

6 Feb 1942
HMS Tuna (Lt. M.B. St. John, RN) departed from Holy Loch for her 13th war patrol. She was ordered to patrol off the Norwegian Coast. She was escorted out until 1200/8 by HMS Cape Warwick (T/Lt. W.E. Goggin, RNR).

No logs are available for this period so no map of this patrol can be displayed. (2)

19 Feb 1942

Operation EO.

Object: destruction of enemy shipping off Tromso, Norway.

Around 0600N/19, the battleship HMS King George V (Capt. W.R. Patterson, CB, CVO, RN, flying the flag of A/Admiral J.C. Tovey, KCB, KBE, DSO, RN, C-in-C Home Fleet), HMS Victorious (Capt. H.C. Bovell, CBE, RN), heavy cruiser HMS Berwick (Capt. G.H. Faulkner, DSC, RN) and the destroyers HMS Inglefield (Capt. P. Todd, DSO, RN), HMS Ashanti (Cdr. R.G. Onslow, RN), HMS Bedouin (Cdr. B.G. Scurfield, OBE, RN), HMS Eskimo (Cdr. E.G. Le Geyt, RN), HMS Icarus (Lt.Cdr. C.D. Maud, DSC and Bar, RN), HMS Fury (Lt.Cdr. C.H. Campbell, DSC and Bar, RN) and HMS Echo (Lt.Cdr. N. Lanyon, RN) departed Hvalfjord.

Around 0845Z/20, they were joined by the destroyers HMS Onslow (Capt. H.T. Armstong, DSC and Bar, RN), HMS Punjabi (Lt.Cdr. J.M.G. Waldegrave, DSC, RN) and HMS Tartar (Cdr. R.T. White, DSO, RN) which came from Seidisfjord.

The destroyers HMS Ashanti, HMS Bedouin, HMS Eskimo and HMS Icarus were then detached to Seidisfjord to fuel. They returned around 1630Z/20.

HMS Inglefield, HMS Fury and HMS Echo were then detached to Seidisfjord while the other ships proceeded on the operation.

At noon on 21 February a reconnaissance aircraft reported an enemy force of two battleships and three cruisers (this were actually the heavy cruisers Prinz Eugen, Admiral Scheer and the destroyers Z 4 / Richard Beitzen, Z 5 / Paul Jacobi, Z 7 / Hermann Schoemann, Z 14 / Friedrich Ihn, Z 25) off the south coast of Norway steering north. The Force assigned to operation EO then immediately changed course to the southward in the hope of reaching a position from which HMS Victorious could launch a night torpedo bomber attack. Operation EO was thus abandoned. Coastal and Bomber command aircraft set out to attack and submarines patrolling of the Norwegian coast (HMS Trident, HMS Tuna, HMS P 37 and FFS Minerve) concentrated in the southern approaches to Trondheim.

No further enemy reports were received, but the Fleet continued on a southerly course so that aircraft from HMS Victorious could be launched around 0300 hours on 22 February and sweep down the coast in the vicinity of Stadtlandet in the hope of sighting the enemy force.

Later that day an aircraft report was received showing that the enemy had retired and the operation was therefore postponed. The battlefleet then retired to the north-westward.

On 22 February a further report of the enemy proceeding northwards was received. The battlefleet then steamed south again and after dark closed the Norwegian coast. At 1800A/22, HMS Victorious, HMS Berwick, HMS Bedouin, HMS Eskimo, HMS Punjabi and HMS Icarus were detached to proceed ahead.

The escort destroyers HMS Chiddingfold (Lt.Cdr. L.W.L. Argles, RN) and HMS Grove (Lt.Cdr. J.W. Rylands, RN) departed Scapa Flow around 1900A/22 for air sea rescue duties for RAF aircraft operating against the German force.

At 0100A/23, ten torpedo aircraft were flown off from HMS Victorious followed by seven more around 0145A/23. All aircraft swept down the Norwegian coast in weather which was rapidly deteriorating. The enemy was not sighted, mainly to due to the very bad visibility. Following the sortie fourteen aircraft landed safely at Sumburgh, Shetland Islands. Three aircraft were lost.

Around 0600A/23, the enemy was spotted again when the submarine HMS Trident attacked them and heavily damaged the Prinz Eugen.

HMS Victorious, HMS Berwick and their four escorting destroyers rejoined HMS King George V and her three escorting destroyers around 0900A/23. Course was then set to Scapa Flow where they arrived around 1630A/23. (11)

25 Feb 1942
HMS Tuna (Lt. M.B. St. John, RN) ended her 13th war patrol at Lerwick. (2)

27 Feb 1942
HMS Tuna (Lt. M.B. St. John, RN) departed Lerwick for Holy Loch. She was escorted by HMS Peterhead (Lt. W.R. Tadman, RNR). (12)

1 Mar 1942
HMS Tuna (Lt. M.B. St. John, RN) arrived at Holy Loch. (13)

9 Mar 1942
HMS Tuna (Lt. M.B. St. John, RN) departed from Holy Loch bound for Lerwick. She was escorted by HMS Bulldog (Cdr. M. Richmond, OBE, RN). (12)

11 Mar 1942
HMS Tuna (Lt. M.B. St. John, RN) arrived at Lerwick. (13)

16 Mar 1942
HMS Tuna (Lt. M.B. St. John, RN) departed from Lerwick for her 14th war patrol. She was ordered to patrol off the Norwegian Coast.

No logs are available for this period so no map of this patrol can be displayed. (2)

3 Apr 1942
HMS Tuna (Lt. M.B. St. John, RN) ended her 14th war patrol at Lerwick. She made the passage together with HMS P 43 (Lt. A.C. Halliday, RN). They were escorted by HMS White Bear (Cdr.(Retd.) C.C. Flemming, RN). (12)

5 Apr 1942
HMS Tuna (Lt. M.B. St. John, RN) arrived at Holy Loch. (13)

7 Apr 1942
HMS Tuna (Lt. M.B. St. John, RN) departed from Holy Loch for Blyth. She is to refit at the yard of Swan Hunters at Wallsend. She made the passage together with HMS Sealion (Lt. G.R. Colvin, RN). They were escorted by HNoMS Draug. (12)

9 Apr 1942
HMS Tuna (Lt. M.B. St. John, RN) arrived at Blyth. She shifted from Blyth to Wallsend on Tyne on 1 May 1942 and commenced refit the next day. (13)

6 Sep 1942
With her refit completed, HMS Tuna (Lt. R.P. Raikes, RN), shifted from the Tyne to Blyth. (14)

14 Sep 1942
With her refit completed, HMS Tuna (Lt. R.P. Raikes, RN), departed from Blyth for Holy Loch to start the work-up period for her 2nd commission. She made the passage together with HMS Sealion (Lt. D. Lambert, DSC, RN). They were escorted by HMS ML 300 (T/Lt. F.C.R. Piesse, RNVR) until 0725/15 when HMS Loch Monteith (T/Lt. K.W. Richardson, RNR) took over the escort. (14)

19 Sep 1942
HMS Tuna (Lt. R.P. Raikes, RN) arrived at Holy Loch to begin a work-up period on the Scottish west coast. (14)

21 Sep 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted exercises in the Clyde area. (14)

22 Sep 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted exercises in the Clyde area. (14)

24 Sep 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted S.T.U. trials in the Clyde area. Upon completion of these trials HMS Tuna proceeded to Campbeltown. (14)

25 Sep 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted exercises off Campbeltown. Upon completion of these exercises HMS Tuna proceeded to Holy Loch. (14)

27 Sep 1942
HMS Tuna (Lt. R.P. Raikes, RN) shifted from Holy Loch to Arrochar. (14)

28 Sep 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted torpedo discharge trials off Arrochar. (14)

30 Sep 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted torpedo discharge trials off Arrochar. (14)

2 Oct 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted torpedo discharge trials off Arrochar. (15)

3 Oct 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted torpedo discharge trials off Arrochar. (15)

5 Oct 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted torpedo discharge trials off Arrochar. (15)

6 Oct 1942
HMS Tuna (Lt. R.P. Raikes, RN) shifted from Arrochar to Holy Loch. (15)

8 Oct 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted exercises in the Clyde area. (15)

9 Oct 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted exercises in the Clyde area. Upon completion of these exercises HMS Tuna proceeded to Rothesay where she was immediately docked in AFD 7. (15)

10 Oct 1942
HMS Tuna (Lt. R.P. Raikes, RN) is undocked at Rothesay following which she immediately proceeded to Holy Loch. (15)

14 Oct 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted exercises in the Clyde area. (15)

16 Oct 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted attack exercises in the Clyde area with HMS Z 5 (T/A/Lt.Cdr. S.T. Wenlock, RNR) serving as target. (15)

18 Oct 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted noise trials at Loch Goil. (15)

23 Oct 1942
HMS Tuna (Lt. R.P. Raikes, RN) departed from Holy Loch for her 15th war patrol. She is ordered to patrol off the Norwegian Coast (to intercept the German heavy cruiser Admiral Scheer that is on passage from Northern Norway to Germany) and in the Norwegian Sea (to give cover for the passage of 36 merchant ships to and from Murmansk).

During the passage to Lerwick she was escorted by HMS La Capricieuse (Lt.Cdr. G.W. Dobson, RNR). HMS H 32 (Lt. C. Gordon, RN) was also in company, she was on passage to Scapa Flow.

For the daily and attack positions of HMS Tuna during this patrol see the map below.

(2)

25 Oct 1942
HMS Tuna (Lt. R.P. Raikes, RN) makes a short call at Lerwick before proceeding on patrol. (2)

6 Nov 1942
HMS Tuna (Lt. R.P. Raikes, RN) fires two salvoes of three torpedoes each against German U-boat U-625 in position 76°08'N, 14°05'E. Both salvoes missed their target.

(All times are zone -1)
0154 hours - Sighted a German U-boat bearing 120°. Turned towards and started attack.

0204 hours - Fired three torpedoes but the enemy was seen to increase speed so at ......

0206 hours - Fired three more torpedoes but now the enemy changed course so all torpedoes fired missed their target.

Dived so not giving the enemy the opportunity for a counter attack.

Note: the attacks were not noted by the Germans. (2)

16 Nov 1942
HMS Tuna (Lt. R.P. Raikes, RN) ended her 15th war patrol at Lerwick. (2)

17 Nov 1942
HMS Tuna (Lt. R.P. Raikes, RN) departed from Lerwick for Holy Loch. (16)

19 Nov 1942
HMS Tuna (Lt. R.P. Raikes, RN) arrived at Holy Loch. (16)

22 Nov 1942
HMS Tuna (Lt. R.P. Raikes, RN) shifted from Holy Loch to Rothesay where she was immediately docked in AFD 7. (16)

24 Nov 1942
HMS Tuna (Lt. R.P. Raikes, RN) is undocked at Rothesay and immediately proceeded to Holy Loch. (16)

26 Nov 1942
HMS Tuna (Lt. R.P. Raikes, RN) conducted noise trials at Loch Goil. (16)

30 Nov 1942

For the daily positions of HMS Tuna during her 16th war patrol see the map below.

(2)

30 Nov 1942
HMS Tuna (Lt. R.P. Raikes, RN) departed from Holy Loch for her 16th war patrol. She is to perform a special operation in the Bay of Biscay. Before she departed from for patrol exercises were carried out in Inchmarnock Water.

During the passage south through the Irish Sea she was escorted by HMS White Bear (Cdr. (Retd.) C.C. Flemming, RN). (2)

7 Dec 1942
During the evening of 7 December 1942 HMS Tuna (Lt. R.P. Raikes, RN) delivered the "Cockleshell Heroes" to the mouth of the Gironde for their daring raid on Bordeaux, France in which 6 German ships were mined. The raid was called Operation Frankton, and only two of the 12 men returned. (2)

13 Dec 1942
HMS Tuna (Lt. R.P. Raikes, RN) ended her 16th war patrol at Plymouth. At the Devonport Dockyard she is to be fitted with RDF (radar). (2)

26 Jan 1943
HMS Tuna (Lt. R.P. Raikes, RN) conducted RDF trials of Plymouth. (17)

27 Jan 1943
HMS Tuna (Lt. R.P. Raikes, RN) departed Plymouth for Holy Loch. She was escorted by HMS Cutty Sark (Cdr.(Retd.) R.H. Mack, RN). (17)

29 Jan 1943
HMS Tuna (Lt. R.P. Raikes, RN) arrived at Holy Loch. (17)

30 Jan 1943
HMS Tuna (Lt. R.P. Raikes, RN) conducted exercises in the Clyde area. (17)

31 Jan 1943
HMS Tuna (Lt. R.P. Raikes, RN) conducted exercises in the Clyde area. (17)

5 Feb 1943
HMS Tuna (Lt. R.P. Raikes, RN) conducted exercises in the Clyde area. (18)

7 Feb 1943
HMS Tuna (Lt. R.P. Raikes, RN) conducted exercises in the Clyde area. Upon completion of these exercises HMS Tuna proceeded to Campbeltown. (18)

8 Feb 1943
HMS Tuna (Lt. R.P. Raikes, RN) participated in A/S exercises off Campbeltown. (18)

9 Feb 1943
HMS Tuna (Lt. R.P. Raikes, RN) participated in A/S exercises off Campbeltown. Upon completion of these exercises HMS Tuna proceeded to Holy Loch. (18)

14 Feb 1943
HMS Tuna (Lt. R.P. Raikes, RN) is docked in a floating dock at Gareloch. (18)

16 Feb 1943
HMS Tuna (Lt. R.P. Raikes, RN) is undocked and immediately proceeded to Holy Loch. (18)

21 Feb 1943
HMS Tuna (Lt. R.P. Raikes, RN) conducted speed trials on the measured mile in Loch Long. (18)

22 Feb 1943
HMS Tuna (Lt. R.P. Raikes, RN) conducted exercises in the Clyde area. (18)

25 Feb 1943
HMS Tuna (Lt. R.P. Raikes, RN) departed from Holy Loch for her 17th war patrol. She was ordered to patrol off the Norwegian Coast. During the passage to Lerwick she was escorted by HMS Scalby Wyke (Skr. A. Mackay, RNR).

For the daily positions of HMS Tuna during this patrol see the map below.

(2)

27 Feb 1943
HMS Tuna (Lt. R.P. Raikes, RN) arrived at Lerwick. (2)

28 Feb 1943
After making good a small defect, HMS Tuna (Lt. R.P. Raikes, RN), departed Lerwick for her patrol area. (2)

11 Mar 1943
HMS Tuna (Lt. R.P. Raikes, RN) ended her 17th war patrol at Lerwick. (2)

12 Mar 1943
HMS Tuna (Lt. R.P. Raikes, RN) departed from Lerwick bound for Holy Loch. She made the passage together with HMS Simoom (Lt. C.H. Rankin, RN) and HMS Sportsman (Lt. R. Gatehouse, DSC, RN). They were escorted by HNoMS King Haakon VII. (19)

14 Mar 1943
HMS Tuna (Lt. R.P. Raikes, RN) arrived at Holy Loch. (20)

22 Mar 1943
HMS Tuna (Lt. D.S.R. Martin, RN) conducted exercises in the Clyde area. Upon completion of these exercises HMS Tuna proceeded to Campbeltown. (21)

23 Mar 1943
HMS Tuna (Lt. D.S.R. Martin, RN) shifted from Campbeltown to Holy Loch. (21)

25 Mar 1943
HMS Tuna (Lt. D.S.R. Martin, RN) conducted exercises in the Clyde area. (21)

27 Mar 1943
HMS Tuna (Lt. D.S.R. Martin, RN) shifted from Holy Loch to Kames Bay where she was immediately docked in a floating dock. She was undocked later the same day and then immediately returned to Holy Loch. (21)

1 Apr 1943
HMS Tuna (Lt. D.S.R. Martin, RN) departed from Holy Loch for her 18th war patrol. She was ordered to patrol in the Norwegian Sea.

She made the passage to Lerwick together with HMS Stubborn (Lt. A.A. Duff, RN) and HMS Universal (Lt. C. Gordon, RN). They were escorted by HMS Tadoussac (T/Lt. J.P. Davies, RNR).

For the daily and attack positions of HMS Tuna during this patrol see the map below.

(2)

3 Apr 1943
HMS Tuna (Lt. D.S.R. Martin, RN) makes a short call at Lerwick before proceeding on patrol. (2)

7 Apr 1943
The German U-Boat U-644 was sunk in the Norwegian Sea south-east of Jan Mayen Island, in position 69°38'N, 05°40'W, by torpedoes from the British submarine HMS Tuna (Lt. D.S.R. Martin, RN).

(All times are zone -2)
2103 hours - In position 69°38'N, 05°40'W heard diesel HE bearing 190°. Commenced attack.

2105 hours - Sighted German U-boat, enemy course 280°, speed 11 knots, range 500 yards.

2109 hours - Fired five torpedoes (six were ordered but one failed to leave the tube).

2109.50 hours - Heard one explosion.

2109.57 hours - Heard another explosion, HE ceased and breaking up noises were heard.

2119 hours - Heard three loud explosions, these must have been the remaining torpedoes exploding at the end of their run.

2123 hours - Surfaced amid wreckage and oil fuel. Also two dead bodies were sighted. One swimming survivor was also sighted but he drowned and sunk before he could be picked up. (2)

14 Apr 1943
HMS Tuna (Lt. D.S.R. Martin, RN) attacks German U-boat U-302 with 4 torpedoes south of Jan Mayen Island in position 70°33'N, 07°10'W. The torpedoes however miss their target.

(All times are zone -2)
0702 hours - Heard diesel HE bearing 315°.

0705 hours - Observed the conning tower of a U-boat bearing 324°. Range was 9000 yards.

0731 hours - Fired 8 torpedoes from 5000 yards. All torpedoes missed their target. (2)

19 Apr 1943
HMS Tuna (Lt. D.S.R. Martin, RN) ended her 18th war patrol at Lerwick. She departed from later that day for Holy Loch. She made the passage together with HMS Severn (Lt.Cdr. A.N.G. Campbell, RN). They were escorted by HMS Hayling. (T/Lt. G.B. Christie, RNR). (19)

21 Apr 1943
HMS Tuna (Lt. D.S.R. Martin, RN) arrived at Holy Loch. (20)

29 Apr 1943
HMS Tuna (Lt. D.S.R. Martin, RN) shifted from Holy Loch to Rosneath where she was immediately docked in a floating drydock for a propeller change. (20)

30 Apr 1943
HMS Tuna (Lt. D.S.R. Martin, RN) was undocked at immediately returned to Holy Loch. (20)

2 May 1943
HMS Tuna (Lt. D.S.R. Martin, RN) conducted exercises in the Clyde area. HMS Tuna proceeded to Campbeltown on completion of these exercises. (22)

3 May 1943
HMS Tuna (Lt. D.S.R. Martin, RN) participated in A/S exercises off Campbeltown. (22)

4 May 1943
HMS Tuna (Lt. D.S.R. Martin, RN) participated in A/S exercises off Campbeltown. (22)

5 May 1943
HMS Tuna (Lt. D.S.R. Martin, RN) conducted exercises in the Clyde area. HMS Tuna proceeded to Holy Loch on completion of these exercises. (22)

7 May 1943
HMS Tuna (Lt. D.S.R. Martin, RN) conducted A/S exercises in the Clyde area with HMS Tuscarora (Lt.Cdr.(Retd.) H.T. Pitt, RN) and HMS Spaniel. (22)

10 May 1943
HMS Tuna (Lt. D.S.R. Martin, RN) conducted exercises in the Clyde area. HMS Tuna proceeded to Holy Loch on completion of these exercises. (22)

14 May 1943
HMS Tuna (Lt. D.S.R. Martin, RN) departed from Holy Loch for her 19th war patrol. She was ordered to patrol in the Norwegian Sea.

She made the passage to Lerwick together with HMS Stubborn (Lt. A.A. Duff, RN) and HMS Seadog (Lt. C.R. Pelly, RN). They were escorted by HMS Bryony (T/Lt. T. Hand, RNR).

For the daily and attack positions of HMS Tuna during this patrol see the map below.

(2)

15 May 1943
HMS Ultimatum (Lt. W.H. Kett, RNR) departed Scapa Flow for Lerwick. At sea she joined HMS Tuna (Lt. D.S.R. Martin, RN) and HMS Seadog (Lt. C.R. Pelly, RN) and escort HMS Bryony (T/Lt. T. Hand, RNR). (23)

16 May 1943
HMS Tuna (Lt. D.S.R. Martin, RN) arrived at Lerwick. (2)

17 May 1943
HMS Tuna (Lt. D.S.R. Martin, RN) departed Lerwick for her patrol area. (2)

30 May 1943
HMS Tuna (Lt. D.S.R. Martin, RN) attacks German U-boat U-341 with 8 torpedoes in the Norwegian Sea in position 64°17'N, 00°43'E. All torpedoes fired missed their target despite the fact that Lt. Martin claims a sinking.

(All times are zone -2)
1411 hours - Observed the conning tower of a submarine bearing 008°. Range was about 9000 yards. Started attack.

1442 hours - Fired 8 torpedoes from 8000 yards.

1451 hours - Just after the first explosion was heard the stern of the enemy submarine was seen to be enveloped in thick black smoke. She was seen to sink stern first at an angle of about 10°.

Note: The target was not hit. (2)

3 Jun 1943
HMS Tuna (Lt. D.S.R. Martin, RN) ended her 19th war patrol at Lerwick. (2)

4 Jun 1943
HMS Tuna (Lt. D.S.R. Martin, RN) departed from Lerwick for Holy Loch. She made the passage together with HMS Stubborn (Lt. A.A. Duff, RN) and HMS Ultimatum (Lt. W.H. Kett, DSC, RNR). They were escorted by HMS Cutty Sark (Cdr.(Retd.) R.H. Mack, RN).

The next moring they were joined by HMS Syrtis (Lt M.H. Jupp, DSC, RN). (19)

6 Jun 1943
HMS Tuna (Lt. D.S.R. Martin, RN) arrived at Holy Loch. (24)

17 Jun 1943
HMS Tuna (Lt. D.S.R. Martin, DSO, RN) conducted exercises in the Clyde area. On completion of these HMS Tuna proceeded to Larne. (24)

18 Jun 1943
HMS Tuna (Lt. D.S.R. Martin, DSO, RN) conducted exercises off Larne. (24)

19 Jun 1943
HMS Tuna (Lt. D.S.R. Martin, DSO, RN) departed Larne for exercises in the Clyde area. Upon completion of these exercises HMS Tuna proceeded to Holy Loch. (24)

21 Jun 1943
HMS Tuna (Lt. D.S.R. Martin, DSO, RN) conducted special A/S exercises inthe Clyde area with HMS Ambuscade (Lt.Cdr. D.E. Mansfield, RN). (24)

23 Jun 1943
HMS Tuna (Lt. D.S.R. Martin, DSO, RN) departed from Holy Loch for exercises with aircraft off the west coast of Scotland. She was escorted by HMS Ambuscade (Lt.Cdr. D.E. Mansfield, RN) and HMS Kingfisher (Lt.Cdr.(Retd.) G.H. Gandy, RN). (19)

28 Jun 1943
HMS Tuna (Lt. D.S.R. Martin, DSO, RN) returns to Holy Loch. (24)

2 Jul 1943
HMS Tuna (Lt. D.S.R. Martin, DSO, RN) is docked in AFD 7 at Holy Loch. (25)

5 Jul 1943
HMS Tuna (Lt. D.S.R. Martin, DSO, RN) is undocked. (25)

10 Jul 1943
HMS Tuna (Lt. D.S.R. Martin, DSO, RN) departed from Holy Loch for her 20th war patrol. She was ordered to patrol in the North Atlantic North of the Azores.

HMS Tuna, HMS Truculent (Lt.Cdr. R.L. Alexander, RN) and USS Haddo (Lt.Cdr. J. Corbus, USN) were escorted out by HMS Cutty Sark (Cdr.(Retd.) R.H. Mack, RN).

For the daily positions of HMS Tuna during this patrol see the map below.

(2)

23 Jul 1943
HMS Tuna (Lt. D.S.R. Martin, DSO, RN) ended her 20th war patrol at Holy Loch. Tuna, and HMS Truculent (Lt.Cdr. R.L. Alexander, RN) were escorted from 0800 hours by HMS Scimitar. (2)

8 Aug 1943
HMS Tuna (Lt. D.S.R. Martin, RN) proceeded to Campbeltown on completion of the exercises. (22)

12 Aug 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) conducted exercises in the Clyde area with HMS White Bear. These also included night exercises during the night of 12/13 August. (26)

14 Aug 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) shifted from Holy Loch to Larne. (26)

15 Aug 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) departed from Holy Loch for her 21th war patrol. She was ordered to patrol in the Bay of Biscay.

Passage south through the Irish Sea was made together with HMS Truculent (Lt.Cdr. R.L. Alexander, DSO, RN). They were escorted until 0700/17 by HMS Loch Monteith (T/Lt. K.W. Richardson, RNR).

For the daily and attack positions of HMS Tuna during this patrol see the map below.

(2)

22 Aug 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) makes a torpedo attack on a German U-boat in position 47°18'N, 04°26'W. All torpedoes fired missed their target despite the claim of a sinking.

(All times are zone -1)
1147 hours - Sighted masts and upper works of five minesweepers bearing 200°. Distance 5 nautical miles, course 025°. As there were no A/S transmissions it was thought that these minesweepers were no escorts but were sweeping. Inside this screen of sweeping minesweepers 2 U-boats were present. Started attack.

1206 hours - Fired 8 torpedoes at one of the u-boats from 3000 yards. It was first intended to fire at both u-boats but the closest one was now much too close to be firing at. Upon firing Tuna went to 150 feet. However no counter attack followed.

1208 hours - One small explosion heard overhead.

1209 hours - Two torpedo explosions were heard, these are thought to be hits as HE of the target ceased.

Upon coming to periscope depth at 2000 hours it was discovered that Tuna had caught a paravane of one of the minesweepers. This was removed and the damage caused by it was repaired.

Note despite the claim for a sinking this was not the case. The u-boats attacked were most likely U-505 and U-515. Both had left Lorient at 2200 hours the previous day but returned at 1840 hours on the 22nd after U-505 had developed a fuel leak. (2)

24 Aug 1943
At 1200 hours, HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN), made rendes-vous with HMS Truculent (Lt.Cdr. R.L. Alexander, DSO, RN) and their escort north towards Holy Loch, HMS Cutty Sark (Cdr.(Retd.) R.H. Mack, RN). (2)

25 Aug 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) ended her 21th war patrol at Holy Loch. This was Tuna's last patrol. As new construction was now available in numbers Tuna was assigned to training duties. Tuna had troubles with her engines from the start (as did other T-class boats built by Scotts), this was also the reason for her being based in home waters for her entire career. (2)

11 Sep 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) shifted from Holy Loch to Rothesay. (27)

12 Sep 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) conducted exercises in the Clyde area for the C.O.Q.C. (Commanding Officers Qualifying Course) with HMS Breda (Capt.(Retd.) A.E. Johnston, RN), HMS Scimitar (Lt. G.C. Potter, DSC, RN), HMS Sardonyx (T/A/Lt.Cdr. E. Playne, RNVR) and HMS Blade (T/A/Lt.Cdr. S.T. Wenlock, RNR). (27)

16 Sep 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) departed from Holy Loch to proceed to Scapa Flow. Here she will be used for A/S exercises. During this passage she was escorted by HMS La Capricieuse (Lt.Cdr. G.W. Dobson, RNR). (27)

18 Sep 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) arrived at Scapa Flow. (27)

21 Sep 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) conducted practice attacks off Scapa Flow on HMS Queen Elizabeth (Capt. H.G. Norman, CBE, RN) escorted by the destroyers HMS Musketeer (Cdr. E.N.V. Currey, DSC, RN), ORP Orkan (Cdr. S. Hryniewiecki, ORP) and HMCS Huron (Lt.Cdr. H.S. Rayner, DSC, RCN).

The battleship herself was meanwhile conducting gunnery exercises. In the evening she conducted a night encounter exercises during which the destroyer HMCS Iroquois (Cdr. J.C. Hibbard, DSC, RCN) served as target. (28)

22 Sep 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) conducted A/S exercises off Scapa Flow together with HMS Venus (Cdr. J.S.M. Richardson DSO, RN) and HMIS Kistna (A/Cdr.(Emgy.) R.R. Caws, RIN). (27)

26 Sep 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) conducted practice attacks during which HMS Viking (Lt. R. Bannar-Martin, DSC, RN) served as the target. (29)

28 Sep 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) conducted practice attacks on HMS Renown (Capt. W.E. Parry, CB, RN) escorted by the destroyers HMS Janus (Lt.Cdr. W.B.R. Morrison, RN) and HMCS Iroquois (Cdr. J.C. Hibbard DSC, RCN). (27)

29 Sep 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) conducted practice attacks on USS Tuscaloosa (Capt. J.B.W. Waller, USN) and HMS Belfast (Capt. F.R. Parham, RN). (27)

30 Sep 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) departed from Scapa Flow bound for Holy Loch.

She made the passage together with HMS Unswerving (T/Lt. M.D. Tattersall, RNVR) and HMS Stonehenge (Lt. D.S.M. Verschoyle-Campbell, DSC and Bar, RN). The submarines were escorted by the British minesweeper HMS La Capricieuse (Cdr. G.W. Dobson, RNR). (27)

2 Oct 1943
HMS Tuna (Lt. D.S.R. Martin, DSO and Bar, RN) arrived at Holy Loch. (30)

15 Oct 1943
HMS Tuna (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) departed from Holy Loch to proceed to Scapa Flow. Here she will be used for A/S exercises. She was escorted by HMS Cutty Sark (Cdr.(Retd.) R.H. Mack, RN). (30)

17 Oct 1943
HMS Tuna (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) arrived at Scapa Flow. (30)

18 Oct 1943
HMS Tuna (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) conducted practice attacks on HMS Royalist (Capt. M.H. Evelegh, RN) for the C.O.Q.C. (Commanding Officers Qualifying Course). (30)

19 Oct 1943
HMS Tuna (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) conducted practice attacks on HMS Birmingham (Capt. H.W. Williams, RN) for the C.O.Q.C. (Commanding Officers Qualifying Course). (30)

21 Oct 1943
HMS Tuna (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) conducted A/S exercises with HMS Royalist (Capt. M.H. Evelegh, RN), HMS Ashanti (Lt.Cdr. J.R. Barnes, RN) and USS Forrest (Lt.Cdr. K.P. Letts, USN). (30)

22 Oct 1943
HMS Tuna (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) conducted A/S exercises off Scapa Flow. (30)

23 Oct 1943
HMS Tuna (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) conducted A/S exercises off Scapa Flow together with HMS Savage (Cdr. R.C. Gordon, DSO, RN), HMS Scourge (Lt.Cdr. G.I.M. Balfour, RN), HNoMS Stord (Lt.Cdr. S.V. Storheill, RNorN) and USS Capps (Lt.Cdr. B.E.S. Trippensee, USN). (30)

24 Oct 1943
HMS Tuna (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) conducted practice attacks on HMS Uther (Lt. P.S. Beale, RN). (30)

25 Oct 1943
HMS Tuna (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) conducted A/S exercises off Scapa Flow together with HMCS Iroquois (Cdr. J.C. Hibbard DSC, RCN), HMS Impulsive (Lt.Cdr. P. Bekenn, RN) and later with HMCS Haida (Cdr. H.G. De Wolf, RCN) and HMS Vigilant (Lt.Cdr. L.W.L. Argles, RN). (30)

26 Oct 1943
HMS Tuna (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) conducted A/S exercises off Scapa Flow together with HMS Ashanti (Lt.Cdr. J.R. Barnes, RN), USS Hobson (Lt.Cdr. K. Loveland, USN) and later with HMS Termagant (Lt.Cdr. J.P. Scatchard, DSC, RN). (30)

27 Oct 1943
HMS Tuna (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) conducted A/S exercises off Scapa Flow together with HMS Venus (Cdr. J.S.M. Richardson DSO, RN) and HMS Termagant (Lt.Cdr. J.P. Scatchard, DSC, RN). (30)

31 Oct 1943
HMS Tuna (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) departed from Scapa Flow bound for Blyth.

Passage south was made together with HMS Tantivy (Cdr. M.G. Rimington, DSO, RN) and HMS Seadog (Lt. C.R. Pelly, RN) coming from Lerwick. They were escorted by HMS Loch Monteith (T/Lt. K.W. Richardson, RNR). Tuna and HMS Uther (Lt. P.S. Beale, RN) then joined them off Scapa Flow. (30)

2 Nov 1943
HMS Tuna (Lt.Cdr.(Retd.) J.R.G. Harvey, RN) arrived at Blyth. She is to refit at the yard of Swan Hunters at Wallsend. This refit starts on 5 November 1943. (13)

27 Apr 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) ended her refit at Wallsend and proceeded to Blyth. Tuna is assigned to training duties mostly based at Holy Loch and Port H.H.Z. where Tuna is used for training with Chariot human torpedoes. (31)

1 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth. (32)

2 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth. (32)

3 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth. (32)

5 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth. (32)

6 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth. (32)

9 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth. (32)

10 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth. (32)

12 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth. (32)

15 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth. (32)

18 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth. (32)

19 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth. (32)

24 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) departed Blyth for Port H.H.Z. (Loch Cairnbawn). She was escorted by HMS Berkshire (A/Skr.Lt. A.H. Sandford, RNR). (33)

26 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) arrived at Port H.H.Z. (33)

30 May 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (32)

1 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (34)

2 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (34)

4 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (34)

7 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) departed Port H.H.Z. for Rothesay. She was escorted by HMS Alecto (A/Capt.(Retd.) A.L. Sanders, RN). (35)

8 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) arrived at Rothesay. (35)

9 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises in the Clyde area. (34)

10 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises in the Clyde area. (34)

11 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises in the Clyde area. (34)

13 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises in the Clyde area. (34)

14 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises in the Clyde area. (34)

15 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises in the Clyde area. (34)

16 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) departed Rothesay for Blyth. She made part of the passage together with HMS Viking (Lt. R. Bannar-Martin, DSC, RN) which joined for passage to Scapa Flow. They were escorted by HMS Loch Monteith (T/Lt. K.W. Richardson, RNR). (35)

20 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) arrived at Blyth. (35)

26 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (34)

27 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (34)

28 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (34)

29 Jun 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) is docked at the Blyth Dry Dock Co. (34)

1 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) is undocked. (36)

4 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (36)

5 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (36)

7 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) departed Blyth for Port H.H.Z. She was escorted by HMS ML 229 (T/Lt. W.C.R. Walsh, RNVR) until 1551/7 when HMS Castlenau (Skr. W.K. Mickleburgh, RNR) took over the escort. (37)

8 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) arrived at Port H.H.Z. (37)

9 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (36)

10 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (36)

11 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (36)

12 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (36)

13 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (36)

14 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (36)

15 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) departed Port H.H.Z. for Leith. She was escorted by HMS Sardonyx (A/Lt.Cdr. T.A. Easton, RNVR) until 0600/16 when HMS St. Agnes (A/Skr.Lt. W. Kirman, RNR) took over the escort. (37)

17 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) arrived at Leith. (37)

25 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted trials off North Berwick. (37)

26 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted trials off North Berwick. Upon completion of these trials she returned to Leith. (37)

27 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) shifted from Leith to North Berwick. (37)

28 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) departed North Berwick for Port H.H.Z. She was escorted by HMS Castlenau (Skr. W.K. Mickleburgh, RNR). (37)

29 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) arrived at Port H.H.Z. (37)

31 Jul 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (36)

1 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (38)

2 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (38)

3 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (38)

4 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (38)

5 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Port H.H.Z. launching and recovering Chariot human torpedoes. (38)

6 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) shifted from Port H.H.Z. to Loch Shell (to the south of Stornoway). (39)

8 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) shifted from Loch Shell to Loch Boisdale. (39)

10 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) departed Loch Boisdale for Scapa Flow. She was escorted by HMS Alecto (A/Capt.(Retd.) A.L. Sanders, RN). (39)

11 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) arrived at Scapa Flow. (39)

13 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) departed Scapa Flow for passage to Blyth. She made the passage together with HMS Tactician (Lt.Cdr. A.F. Collett, DSC, RN) and HMS Trusty (Lt. L.E. Herrick, DSO, RN) that were both en-route to Dundee. They were escorted by HMS Graemsay (A/Skr.Lt. A.R. Lewis, RNR). (39)

14 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) arrived at Blyth. (39)

29 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (38)

30 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (38)

31 Aug 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (38)

1 Sep 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (40)

5 Sep 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (40)

8 Sep 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (40)

12 Sep 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (40)

13 Sep 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (40)

14 Sep 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (40)

21 Sep 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (40)

22 Sep 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (40)

23 Sep 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (40)

13 Oct 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (41)

15 Oct 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) shifted from Blyth to Leith. She was escorted by HMS Castlenau (T/Skr. G. Wood, RNR). (41)

20 Oct 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) participated in special radar trials off Leith. (41)

22 Oct 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) participated in special radar trials off Leith. (41)

23 Oct 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) participated in special radar trials off Leith. (41)

24 Oct 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) participated in special radar trials off Leith. (41)

25 Oct 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) participated in special radar trials off Leith. (41)

26 Oct 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) participated in special radar trials off Leith. (41)

27 Oct 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) participated in special radar trials off Leith. (41)

29 Oct 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) participated in special radar trials off Leith. (41)

30 Oct 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) shifted from Leith to Blyth. She was escorted by HMS Southcoates (SKr. A. Duthie, RNR). (41)

7 Nov 1944
HMS Tuna (A/Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (42)

8 Nov 1944
HMS Tuna (Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (42)

9 Nov 1944
HMS Tuna (Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (42)

10 Nov 1944
HMS Tuna (Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (42)

21 Nov 1944
HMS Tuna (Lt.Cdr. L.F.L. Hill, RNR) conducted exercises off Blyth with a training class of new submariners. (42)

12 Dec 1944
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises off Blyth with a training class of new submariners. (43)

17 Dec 1944
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) departed Blyth for Holy Loch. She was escorted by HMS Delila (A/Skr. R.E. Bedford, RNR) until about 0300/19 when off Scapa Flow, HMS Tuna joined HMS Trusty (Lt. J.P. Fyfe, DSC, RN), HMS Sibyl (Lt. H.R. Murray, RN) and their escort HMS Hastings (A/Cdr. E.A. Stocker, DSC, RN) for onward passage to Holy Loch. (43)

20 Dec 1944
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) arrived at Holy Loch. (43)

23 Dec 1944
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) is docked in AFD 7 at Holy Loch. (43)

27 Dec 1944
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) is undocked. (43)

28 Dec 1944
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (43)

30 Dec 1944
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (43)

31 Dec 1944
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (43)

3 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (44)

4 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted noise trials in Loch Goil. (44)

5 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted noise trials in Loch Goil. (44)

6 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) shifted from Holy Loch to Campbeltown. (44)

7 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted special trials off Campbeltown with HMS Sardonyx (Lt.Cdr. L.F.L. Hill, RNR). (44)

8 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted special trials off Campbeltown with HMS Sardonyx (Lt.Cdr. L.F.L. Hill, RNR). (44)

9 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted special trials off Campbeltown with HMS Sardonyx (Lt.Cdr. L.F.L. Hill, RNR). Upon completion of these exercises HMS Tuna proceeded to Rothesay. (44)

9 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted special trials off Campbeltown with HMS Sardonyx (Lt.Cdr. L.F.L. Hill, RNR). Upon completion of these exercises HMS Tuna proceeded to Rothesay. (44)

10 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area for the C.O.Q.C. (Commanding Officers Qualifying Course) with HMS Milford (Cdr.(Retd.) G.G. Slade, RN), HMS Whitehall (Lt. J. Monroe, RN) and HMS Sardonyx (Lt.Cdr. L.F.L. Hill, RNR). (44)

11 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) returned to Holy Loch on completion of the night exercises. (44)

15 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) and HMS Templar (Lt. T.G. Ridgeway, RN) conducted special exercises / trials in the Clyde area. (45)

18 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted special exercises / trials in the Clyde area. (44)

22 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (44)

24 Jan 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted noise trials in Loch Goil. (44)

2 Feb 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (46)

3 Feb 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (46)

12 Feb 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) is docked in AFD 7 at Holy Loch. (46)

13 Feb 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) is undocked. (46)

13 Feb 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (46)

15 Feb 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (46)

16 Feb 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (46)

22 Feb 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (46)

23 Feb 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (46)

27 Feb 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (46)

28 Feb 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (46)

3 Mar 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (47)

9 Mar 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (47)

10 Mar 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (47)

11 Mar 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (47)

12 Mar 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (47)

16 Mar 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (47)

19 Mar 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (47)

19 Apr 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (48)

21 Apr 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (48)

25 Apr 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (48)

27 Apr 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (48)

30 Apr 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (48)

1 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (49)

2 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (49)

3 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (49)

4 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (49)

5 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (49)

10 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area for the C.O.Q.C. (Commanding Officers Qualifying Course) with HMS Volatile (Lt. F.R. Lawrence, RN) and HMS Kihna (Cdr.(Retd.) T.J.T.C. Jenks, RN) serving as targets. These included night exercises during the night of 10/11 May. (49)

11 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) returned to Holy Loch on completion of the night exercises. (49)

12 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (49)

13 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (49)

14 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (49)

15 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (49)

17 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area for the C.O.Q.C. (Commanding Officers Qualifying Course) with HMS Milford (Cdr.(Retd.) G.G. Slade, RN), HMS Keppel (Cdr. I.J. Tyson, RD, RNR) and HMS Kihna (Cdr.(Retd.) T.J.T.C. Jenks, RN). (49)

18 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (49)

23 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area for the C.O.Q.C. (Commanding Officers Qualifying Course) with HMS Milford (Cdr.(Retd.) G.G. Slade, RN), HMS Westcott (A/Lt.Cdr. E.P. Reade, DSC, RN) and HMS Shikari (Lt. E.A. Tyrer, DSC, RN). serving as targets. These included night exercises during the night of 23/24 May. (49)

24 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) returned to Holy Loch on completion of the night exercises. (49)

30 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (49)

31 May 1945
HMS Tuna (Lt.Cdr. E.D. Norman, DSO, DSC, RN) conducted exercises in the Clyde area. (44)

4 Jun 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) conducted exercises in the Clyde area. (50)

4 Jun 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) conducted exercises in the Clyde area. (50)

8 Jun 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) conducted exercises in the Clyde area. (50)

12 Jun 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) conducted exercises in the Clyde area. (50)

15 Jun 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) conducted exercises in the Clyde area. (50)

17 Jun 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) conducted exercises in the Clyde area. (50)

18 Jun 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) conducted exercises in the Clyde area. These included night exercises during the night of 18/19 June. (50)

19 Jun 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) returned to Holy Loch on completion of the night exercises. (50)

21 Jun 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) conducted exercises in the Clyde area. These included night exercises during the night of 21/22 June. (50)

22 Jun 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) returned to Holy Loch on completion of the night exercises. (50)

28 Jun 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) conducted exercises in the Clyde area for the C.O.Q.C. (Commanding Officers Qualifying Course) with HMS Milford (Cdr.(Retd.) G.G. Slade, RN), HMS Peterhead (T/A/Lt.Cdr. S.T. Wenlock, RNR) and HMS PC 74 (A/Lt.Cdr. A. Richardson, RNR) serving as targets. These included night exercises during the night of 18/19 June. (50)

29 Jun 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) returned to Holy Loch on completion of the night exercises. (50)

5 Jul 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) departed Holy Loch for passage to Copenhagen, Denmark. (51)

10 Jul 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) arrived at Copenhagen. (51)

13 Jul 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) shifted from Copenhagen to Helsingør. (51)

14 Jul 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) conducted noise trials with a former German hydrophone station at Hornbæk. (51)

15 Jul 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) conducted noise trials with a former German hydrophone station at Hornbæk. (51)

16 Jul 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) shifted from Helsingør to Copenhagen. (51)

19 Jul 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) departed Copenhagen for Kiel, Germany. (51)

20 Jul 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) arrived at Kiel. (51)

25 Jul 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) transited the Kiel Canal and arrived at Brunsbüttel. (51)

26 Jul 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) departed Brunsbüttel for Portsmouth. (51)

28 Jul 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) arrived at Portsmouth. (51)

13 Aug 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) departed Portsmouth for Rotterdam. (52)

15 Aug 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) arrived at Rotterdam. (52)

25 Aug 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) departed Rotterdam for Portsmouth. (52)

26 Aug 1945
HMS Tuna (Lt.Cdr. R.L. Alexander, DSO, DSC, RN) arrived at Portsmouth. Tuna was placed in reserve on 1 September 1945. She was beached on the mud at Falmouth on 13 October 1945. (52)

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