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Notable events involving O 19 include:

The history of HrMs O 19 as compiled on this page is for the most part extracted from the patrol reports and logbook (unfortunately only one, April 1945 - July 1945) of this submarine found at the British archives at Kew, London and the Dutch archives at The Hague, Netherlands.

This page was last updated in August 2017.

13 Sep 1939
HrMs O 19 (Lt.Cdr. K. van Dongen, RNN) arrived at Surabaya, Java, Netherlands East Indies from the Netherlands. She had made the passage to the far east via the Mediterranean.

7 Dec 1941
Before the war with Japan started the submarines of the 4th submarine division, HrMs O 19 (Lt.Cdr. F.J.A. Knoops, RNN) and HrMs O 20 (Lt.Cdr. P.G.J. Snippe, RNN), were ordered to patrol in the eastern part of the Java Sea. (1)

8 Dec 1941
The submarines of the 4th submarine division, HrMs O 19 (Lt.Cdr. F.J.A. Knoops, RNN) and HrMs O 20 (Lt.Cdr. P.G.J. Snippe, RNN), were ordered to patrol off Strait Karimata. (1)

11 Dec 1941
The submarines of the 4th submarine division, HrMs O 19 (Lt.Cdr. F.J.A. Knoops, RNN) and HrMs O 20 (Lt.Cdr. P.G.J. Snippe, RNN), were ordered to patrol to the north of Strait Karimata. (1)

12 Dec 1941
The submarines of the 4th submarine division, HrMs O 19 (Lt.Cdr. F.J.A. Knoops, RNN) and HrMs O 20 (Lt.Cdr. P.G.J. Snippe, RNN), were placed under the command of the British Commander in Chief Eastern Fleet. The boats were ordered to proceed to Singapore. (1)

13 Dec 1941
The submarines of the 4th submarine division, HrMs O 19 (Lt.Cdr. F.J.A. Knoops, RNN) and HrMs O 20 (Lt.Cdr. P.G.J. Snippe, RNN), both arrived at Singapore. (1)

14 Dec 1941
The submarines of the 4th submarine division, HrMs O 19 (Lt.Cdr. F.J.A. Knoops, RNN) and HrMs O 20 (Lt.Cdr. P.G.J. Snippe, RNN), both departed Singapore for their 1st war patrols. They were ordered to patrol off the west coast of Malaya.

For positions during this patrol see the map below. The map is unfortunately incomplete as no log is available for this period.

(2)

17 Dec 1941
Between 1148 and 1206 hours (timezone -7.5), HrMs O 19 (Lt.Cdr. F.J.A. Knoops, RNN), fired a total of two torpedoes at two Japanese ships, a small tanker and a medium freighter. No hits were obtained. Position was 07°05'N, 103°11'E. (1)

23 Dec 1941
At 0625 hours (timezone -7.5), HrMs O 19 (Lt.Cdr. F.J.A. Knoops, RNN), sighted a Japanese convoy made up of three medium transports (around 4000 GRT each). A total of four torpedoes were fired at all three ships. No hits were obtained. Position was 07°43'N, 103°07'E. (1)

25 Dec 1941
HrMs O 19 (Lt.Cdr. F.J.A. Knoops, RNN) ended her 1st war patrol at Singapore. (1)

1 Jan 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) departed Singapore for her 2nd war patrol. She was ordered to patrol off the Gulf of Siam.

For positions during this patrol see the map below. The map is unfortunately incomplete as no log is available for this period.

(2)

10 Jan 1942
At 1555 hours (zone -7.5), HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)), torpedoed and heavily damages the Japanese troop transport Akita Maru (3792 GRT, built 1916).

Two transports had been sighted at 1500 hours in position 07°46'N, 103°13'E. An attack was started on the largest, 5000 GRT, vessel but by 1540 hours target was shifted to the smaller 2000 GRT vessel. Three torpedoes were fired at 1555 hours. Two hits were obtained. The ship was seen to be in a sinking condition but due to the cargo of timber she did not sink. She was finally sunk in position 07°35'N, 103°13'E with gunfire by the Japanese destroyer Fubuki (2)

13 Jan 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) departed her patrol area to return to Singapore. (2)

15 Jan 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) ended her 2nd war patrol at Singapore. (2)

28 Jan 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) departed Singapore for Surabaya. (2)

3 Feb 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) arrived at Surabaya where she was docked. (2)

16 Feb 1942
With her repairs completed, HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)), departed Surabaya for her 3rd war patrol. She was ordered to patrol to the south of Strait Karimata. (2)

17 Feb 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) is forced to return to Surabaya because of defects thus ending her 3rd war patrol. (2)

26 Feb 1942
With her repairs completed, HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)), departed Surabaya for her 4th war patrol. She was ordered to patrol in the Java Sea. (2)

2 Mar 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) is ordered to remain on patrol as long as long as possible before proceeding to Colombo. (2)

7 Mar 1942
After dark, HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)), passed Strait of Sape southbound. (2)

8 Mar 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) patrolled south of Lombok. (2)

9 Mar 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) patrolled south of Bali. (2)

10 Mar 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) set course to proceed to Colombo. (2)

21 Mar 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) ended her 4th war patrol at Colombo. (2)

31 Mar 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) departed Colombo for her 5th war patrol. She is ordered to patrol off Minicoy Atoll.

For positions during this patrol see the map below. The map is unfortunately incomplete as no log is available for this period.

(2)

6 Apr 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) is ordered to return to Colombo. (2)

8 Apr 1942
HrMs O 19 (Lt. H.F. Bach Kolling, RNN(R)) ended her 5th war patrol at Colombo. (2)

20 Apr 1942
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) departed Colombo for her 6th war patrol. She is ordered to patrol in the northern entrance of the Malacca Strait.

For positions during this patrol see the map below. The map is unfortunately incomplete as no log is available for this period.

(2)

9 May 1942
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) ended her 6th war patrol at Colombo. (2)

13 May 1942
The Dutch submarine tender HrMs Colombia (Capt. J.L.K. Hoeke, RNN) and the Dutch submarines HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) and HrMs O 23 (Lt.Cdr. A.M. Valkenburg, RNN) departed Colombo for Bombay where they arrived on the 16th. They were escorted by the British destroyer HMS Scout (Lt.Cdr.(Retd.) H. Lambton, RN). (3)

16 May 1942
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) arrived at Bombay. (2)

20 May 1942
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) is docked at Bombay. (2)

15 Jul 1942
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) is undocked. (2)

20 Jul 1942
HrMs Colombia (Capt. J.L.K. Hoeke, RNN), HrMs K XV (Lt.Cdr. Baron C.W.T. van Boetzelaer, RNN) and HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) departed Bombay for Colombo where they arrived on the 25th. (2)

24 Jul 1942
O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) arrived at Colombo. (2)

31 Jul 1942
HrMs Colombia (Capt. J.L.K. Hoeke, RNN) and HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) departed Colombo for Kilindini / Mombasa where they arrived on 8 August 1942. (2)

8 Aug 1942
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) arrived at Kilindini where she was used for A/S training purposes.

[As no log is available for this period no further details can be given]. (2)

21 Aug 1942
HMAS Nizam (Lt.Cdr M.J. Clark, DSC, RAN) and HMAS Norman (Cdr. H.M. Burrell, RAN) conducted A/S exercises off Kilindini with HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)). (4)

3 Sep 1942
HMAS Napier (Capt. S.H.T. Arliss, DSO, RN) and HrMs Van Galen (Lt.Cdr. F.T. Burghard, RNethN) conducted A/S exercises off Kilindini with HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNethN(R)).

Following the A/S exercises the destroyers conducted gunnery exercises.

Following the exercises HrMs Van Galen proceeded to Tanga. She returned to Kilindini on the 4th. The other two vessels had returned on the 3rd. (5)

7 Sep 1942
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) departed Kilindini for East London, South Africa. She is escorted by the Free French corvette Commandant Detroyat. (2)

14 Sep 1942
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) and Commandant Detroyat arrived at East London. (2)

21 Sep 1942
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) departed East London for Simonstown. She was escorted by the British corvette HMS Thyme (Lt. H. Roach, RNR). (2)

24 Sep 1942
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) arrived at Simonstown. At Simonstown the Vulcan Clutch from the port diesel engine is removed to be fitted on board HrMs O 21 which had a defective clutch. This took quite some time. (2)

23 Dec 1942
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) departed Simonstown for Freetown. (2)

8 Jan 1943
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) arrived at Freetown. (2)

16 Jan 1943
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) departed Freetown for Falmouth. (2)

2 Feb 1943
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) arrived at Falmouth. She departed for Holy Loch later the same day. During the passage north through the Irish Sea she was escorted by HMS Shikari (Lt.Cdr. G.H.D. Williams, RN). (6)

5 Feb 1943
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) arrived at Holy Loch. (6)

6 Feb 1943
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) departed Holy Loch for Dundee. She made part of the passage together with the British submarine HMS P 31 (Lt. L.E. Herrick, DSC, RN) which was en-route to Scapa Flow. They were escorted by HMS Pennyworth (T/Lt. R.A. Mason, RNVR). Off Scapa Flow, HMS Lord Lloyd (T/Lt. M.W. Bond, RNVR), took over the escort of HrMs O 19. (6)

9 Feb 1943
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) arrived at Dundee. (6)

10 Feb 1943
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) shifted from Dundee to Rosyth. She was escorted by HMS Lord Lloyd (T/Lt. M.W. Bond, RNVR). (2)

11 Feb 1943
HrMs O 19 (Lt.Cdr. H.F. Bach Kolling, RNN(R)) shifted from Rosyth to Grangemouth where she was to be refitted. (2)

1 Feb 1944
During 1-5 February 1944, HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN), conducted post refit trials in the Firth of Forth. (2)

7 Feb 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) shifted from Leith to Dundee. She was escorted by HMS ML 229 (T/Lt. W.C.R. Walsh, RNVR). (2)

8 Feb 1944
During 8-10 February 1944, HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN), conducted exercises off Dundee. (2)

24 Feb 1944
During 24-25 February 1944, HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN), conducted exercises off Dundee. (2)

27 Feb 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) departed Dundee for Holy Loch. She was escorted until Scapa Flow by HMS Crowlin (A/Skr.Lt. A. Smith, RNR). Off Scapa Flow HMS Cutty Sark took over the escort. (7)

27 Feb 1944
HrMs Zeehond (Lt.Cdr. Baron D.T. Mackay, RNN) departed Lerwick for Rothesay. Passage was made together with 3580 HMS Vampire (Lt. C.W. Taylor, RNR). They were escorted by HMS Annet (T/Lt. E.H. Andrews, RNVR) until the Pentland Firth when HMS Crowlin (A/Skr.Lt. A. Smith, RNR) took over the escort. Also HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) joined for onward passage to Holy Loch. (8)

29 Feb 1944
HrMs Zeehond (Lt.Cdr. Baron D.T. Mackay, RNN), HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) and HMS Vampire (Lt. C.W. Taylor, RNR) arrived at Stornoway. They departed again later the same day for Holy Loch. HMS Cutty Sark (A/Cdr. E.A. Stocker, DSC, RN) was now their escort. (8)

1 Mar 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) arrived at Holy Loch to begin a training period. (7)

31 Mar 1944
HMS Visigoth (Lt. J.R.H. Haddow, DSC, RN) and HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) conducted attack exercises in the Clyde area, during which HMS Jan van Gelder (Lt. P.D. O'Driscoll, RNR) served as the target. (9)

22 Apr 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) departed Holy Loch for passage to Dundee. She made the passage together with HMS Sibyl (Lt. E.J.D. Turner, DSO, DSC, RN) and HMS Strongbow (Lt. J.A.R. Troup, DSC, RN). Sibyl was also to proceed to Dundee and Strongbow was to proceed to Lerwick to begin her 1st war patrol from there.

They were escorted by HMS Sardonyx (T/A/Lt.Cdr. E. Playne, RNVR). (7)

24 Apr 1944
At 0700 hours HMS Loch Monteith (T/Lt. K.W. Richardson, RNR) took over the escort of HMS Sibyl (Lt. E.J.D. Turner, DSO, DSC, RN) and HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) to Dundee. (10)

25 Apr 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) arrived at Dundee. (7)

29 May 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) departed Dundee for Holy Loch. She made the passage together with HMS Unseen (T/Lt. T.D. Wood, DSC, RNVR) which came from Sheerness and Vulpine (T/Lt. P.S. Thirsk, DSC, RNR) which came from Blyth. They were escorted by HMS Loch Monteith (T/Lt. K.W. Richardson, RNR). (7)

1 Jun 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) arrived at Holy Loch for another training period which included submerged minelaying trials. (2)

10 Jun 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) is docked at Holy Loch. (2)

11 Jun 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) is undocked. (2)

12 Jun 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) and HMS Virtue (Lt. R.D. Cairns, DSC, RN) departed Holy Loch for the passage to Malta (Virtue to Gibraltar). They made the passage in convoy OS 80 / KMS 54. (7)

28 Jun 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) arrived at Malta. (2)

3 Jul 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) departed Malta for Port Said. (2)

8 Jul 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) arrived at Port Said. (2)

14 Jul 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) departed Port Said for Aden. (2)

18 Jul 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) arrived at Aden. (2)

19 Jul 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) departed Aden fo Colombo. (2)

27 Jul 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) arrived at Colombo. (2)

10 Aug 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) departed Colombo for Trincomalee. (2)

12 Aug 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) arrived at Trincomalee. (2)

16 Aug 1944
During 16 and 17 August 1944, HMS Sirdar (Lt. J.A. Spender, RN) and HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) conducted exercises off Trincomalee with each other. Also involved in these exercises was their escort, HMIS Pansy (Lt. R.G. Main, RINR). These included night exercises. (11)

21 Aug 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) departed Trincomalee for her 7th war patrol. She was ordered to patrol off the east coast of Sumatra and to proceed to Fremantle, Australia upon completion of her patrol.

For positions during this patrol see the map below. The map is unfortunately incomplete as no log is available for this period.

(12)

4 Sep 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) sank a sampan with gunfire of the west coast of Sumatra.

(All times are zone -6.5)
1250 hours - Sighted a large sampan bearing 030°, range five nautical miles. Turned towards.

1305 hours - Increased to 11.5 knots. Went to gun action stations.

1340 hours - In position 02°26'S, 100°49'E opened fire from a range of 2500 yards. The target was a sampan of 20 - 40 tons. The fourth round landed 10 yards astern. Mast and sail down. The fifth round hit aft and the sampan began to settle. Ceased fire. The sampan soon sank, the crew took to their Canoe. Hailed them and they came alongside and were taken on board. They were five in number, all south Sumatran natives. They were taken below. The three eldest would like to return to the shore, the two youngest volunteered to remain on board. (12)

6 Sep 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) sank a coaster with gunfire off the east coast of Sumatra, Netherlands East Indies in position 02°45'S, 101°09'E.

(All times are zone -6.5)
0500 hours - Sighted a small silhouette bearing 015°. Turned stern on.

0507 hours - Dived as light was increasing. Turned towards.

0525 hours - The target was seen to be a typical Japanese coaster of about 200 tons. Enemy course was 150°, range 4 nautical miles.

0530 hours - Stand by gun action.

0541 hours - Range was now 2 nautical miles. Surfaced for gun action. The third round hit. The target meanwhile had turned towards the shore and was making smoke. A total of 2 rounds were fired before she was fully ablaze. About 15 to 20 Japanese were observed on her in in the water.

0601 hours - O 19 closed in for the kill but although hits were observed the target refused to sink. O 19 was now in very shallow water. Broke off the action and retired to seaward. Position was now 02°45'S, 101°09'E.

0610 hours - The target blew up with a large explosion. (12)

10 Sep 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) sank a Japanese coaster with gunfire of about 70 nautical miles south-west of Enggano Island in position 05°59'S, 101°15'E.

(All times are zone -6.5)
1620 hours - Sighted silhouette bearing 099°. Enemy course 350°. Turned away to avoid being seen.

1638 hours - Altered course to 360° to vertake the enemy and reduce the angle on the bow.

1641 hours - Sighted aicraft bearing 090° making for O 19. Dived. While dived lost sight of the target.

1732 hours - Assumed that the aircraft had made off because of coming darkness. Surfaced. Sighted the target bearing 075°, range 6 nautical miles. Made out as a large coaster still on a northerly course, with low speed.

1745 hours - Stand by gun action. The enemy turned away. It was getting dark and O 19 was on the wrong horizon so decided to pass the target to the south and place him against the lighter western horizon, though by that time the light might have been gone.

1818 hours - Range by radar 1800 yards. All light gone, the target could just be seen through glasses. No use waiting any longer. Opened fire. The 3rd round hit and of a total of 19 rounds fired at least 5 were hits. A fire was seen to break out aft and on the bridge of the enemy. Ceased fire. Closed to give the Oerlikon a chance. Fired 3 magazines from a range of 700 - 800 yards. No hits seen.

1839 hours - The flames on the enemy aft disappeared as the stern settled.

1850 hours - The target had almost disappeared except for a small part of the stem. O 19 now proceeded on course 142°, speed 14 knots. (12)

15 Sep 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) made a short stop at Exmouth Gulf, Australia to take on board some fuel. She departed later the same day to continue her passage to Fremantle. (12)

18 Sep 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) ended her 7th war patrol at Fremantle. (12)

20 Sep 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) was docked at Fremantle. It was found out that the starboard after hydroplane was missing and that the starboard propeller was damaged. A new hydroplane had to be manufactured but the propeller was repaired. (13)

21 Sep 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) was undocked. (13)

13 Oct 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) was put on the slipway at Fremantle. The newly manufactured starboard hydroplane was installed and the ships bottom was cleaned and painted. (13)

16 Oct 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) was put back in the water. (13)

19 Oct 1944
During 19 - 21 October 1944, HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN), conducted exercises off Fremantle. (2)

23 Oct 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) departed Fremantle for her 8th war patrol. She was ordered to patrol in the eastern part of the Java Sea and in the Bali Sea.

For the daily and attack positions of HrMs O 19 during this patrol see the map below. No positions are known for 27, 29 and 30 October 1944 as well as for 17 and 18 November 1944.

(12)

26 Oct 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) made a short stop a Exmouth Gulf to top off with fuel and to take on board a replacement for the 2nd watch officer which left the boat sick. (12)

29 Oct 1944
During the night of 29/30 October 1944, HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN), attempted to make the northbound passage of Lombok Strait. The attempt however failed as she was detected by the Japanese. (12)

30 Oct 1944
During the night of 30/31 October 1944, HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN), successfully made the northbound passage of Lombok Strait.

16 Nov 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) sank the Japanese coaster Kaishin Maru No.2 with gunfire in the Java Sea between Bawean and Mesalembo.

(All times are zone -8)
1030 hours - Sighted a small craft bearing 110°. Enemy course east-north-east, speed 5 knots. Made an end around to the west and north and then submerged on the enemy's track.

1400 hours - Surfaced and sank the coaster by gunfire. Size of the enemy was 100 - 200 tons. Picked up seven survivors, one native nurse (on passage to Celebes), two natives, and four Japanese. Several more Japanese refused to be picked up. (12)

18 Nov 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) passed Lombok Strait southbound. (12)

24 Nov 1944
HrMs O 19 (Lt.Cdr. A. van Karnebeek, RNN) ended her 8th war patrol at Fremantle. (12)

18 Dec 1944
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) departed Fremantle for her 9th war patrol. She was ordered to patrol in the Java Sea and to lay a minefield to the west of Batavia.

Before proceeding on patrol, 40 mines were loaded at Woodlands Point and at sea exercises were carried out with the Australian minesweeper/corvette HMAS Warrnambool (Lt.Cdr. (emergency) E.J.B. Wight, RAN).

For positions during this patrol see the map below. The map is unfortunately incomplete as no log is available for this period.

(12)

26 Dec 1944
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) made a short stop at Darwin to top off with fuel. She departed for her patrol area later the same day. (12)

30 Dec 1944
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) intercepted a small native sailing vessel near Kangean Island. They were allowed to proceed.

(All times are zone -8)
1700 hours - Sighted a small sailing vessel. Intercepted it to obtain information. They were from Sapoedi Island and en route to Kangean Island with some food but they were nearly empty.

1750 hours - Continued passage. (12)

1 Jan 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) stopped a junk with gunfire in the Java Sea in position 05°11'S, 109°50'E. After examination they were allowed to proceed.

(All times are zone -8)
0200 hours - Sighted a three masted junk in position 05°11'S, 109°50'E. Fired two rounds, one hit. Ceased fire and allowed them to proceed.

0300 hours - Continued passage. (12)

3 Jan 1945
Between 1130 - 1230 hours (zone -8), HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN), laid 40 mines in the Java Sea, west of Batavia, Java, Netherlands East Indies in position 05°50'S, 106°16'E. (12)

5 Jan 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) attacked what was thought to be an enemy patrol vessel with four torpedoes east of the Sunda Strait in position 05°51'S, 106°10'E. No hits were obtained.

(All times are zone -8)
0336 hours - Sighted silhouette bearing 292°. Went to action stations.

0337 hours - Dived. Asdic reported propellers bearing 300°. Changed course to intercept.

0345 hours - Fired four torpedoes from 1500 yards at what might have been an enemy patrol vessel. No hits were obtained. No pinging was heard and no counter attack followed. (12)

9 Jan 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) torpedoed and sank the Japanese auxiliary gunboat Shinko Maru No.1 (935 GRT, built 1938) off Tandjung Puting, Borneo in position 03°46'S, 111°54'E. The O 19 however was heavily damaged by depth charges from the submarine chaser CH-5 and forced to abandon her patrol.

(All times are zone -8)
1653 hours - Sighted mast bearing 064°.

1710 hours - Plot suggested enemy's course 270°.

1732 hours - Sighted smoke bearing 088°. The masts of the previous contact were now nearly in line. The new contact was later seen to be a submarine chaser. The first contact was a small merchant vessel.

1849 hours - Fired three torpedoes at the merchant vessel from 800 yards. Went deep on firing but hit bottom at 11 fathoms. One torpedo explosion was heard followed by breaking up noises several minutes later.

1903 hours - Tried to get off the bottom.

1909 hours - At periscope depth. The merchant was not seen and must have sunk. The escort however was only 400 yards away and turned towards. Went to the bottom again.

1911 hours - The submarine chaser went overhead but dropped nothing.

1922 hours - Three depth charges but these were quite some way off. Decided to remain on the bottom.

2037 hours - The enemy suddenly raced overhead and dropped five depth charges, very close. They caused serious damage. A hail of light bulbs came down, lights went out. Water leaks on several places. A short circuit burnt itself out in the control room. But worst of all in the engine room the air conditioning plant started leaking carbon dioxide into the boat. The stern compartment and engine room had to be evacuated. Closed all W/T doors. The fumes leaked into the control room and it had to be evacuated also.

2230 hours - A selection of engine room personnel was fitted out with DSEA sets.

2242 hours - Blow ballast and went to the surface. It was very dark but shapes of two ships were seen at a range of 1500 yards. Dived again.

2300 hours - With great effort the W/T door to the engine room could be opened. There was water to the deck plates. Water was still pouring in through valves that had been opened through the shock of the explosions. These were closed and water was being pumped out.

2328 hours - Both engines reported ready.

2330 hours - Surfaced and cleared the area at high speed on both engines. Damage was investigated during the night. The result was that it was impossible to remain on patrol. (12)

15 Jan 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) arrived at Darwin to effect some repairs. (12)

17 Jan 1945
After some emergency repairs and taking on board fuel, HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN), departed Darwin for Fremantle. (12)

24 Jan 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) ended her 9th war patrol at Fremantle. (12)

18 Mar 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) is put on the slipway at Fremantle to install two new after hydroplanes which had been lost during the depth charging of 9 January 1945. (13)

25 Mar 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) is put back in the water. (13)

27 Mar 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) conducted exercises off Fremantle. (2)

29 Mar 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) conducted exercises off Fremantle. (2)

31 Mar 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) departed Fremantle for her 10th war patrol. She was ordered to patrol in the Java Sea and to lay a minefield in Banka Strait.

Before proceeding on patrol, 40 mines were loaded at Woodlands Point and at sea exercises were carried out with the Australian minesweeper/corvette HMAS Kiama (T/A/Lt.Cdr. S.J. Benson, RANR(S)).

For positions during this patrol see the map below. The map is unfortunately incomplete as no log is available for the whole period.

(12)

3 Apr 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) made a short stop at Exmouth Gulf to top off with fuel before proceeding for her patrol area later the same day. (12)

10 Apr 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) torpedoed and sank the Japanese merchant tanker Hosei Maru (676 GRT, former Dutch Poseidon, built 1914) in the Java Sea in position 05°25'S, 106°39'E.

(All times are zone -9)
1150 hours - In position 05°25'S, 106°39'E sighted smoke bearing 319°. The target was seen to be a large 'Sugar Charlie'. Decided on torpedo attack. Targets course 155°, speed 6 knots.

1222 hours - Fired two bow torpedoes. No hits. Probably ran under.

1225 hours - Surfaced for gun action. Range was 500 yards. The target was stopped by the first round which hit aft. A total of 86 rounds had to be used before the target was well ablaze and settling.

1242 hours - Ceased fire when the gun malfunctioned.

1255 hours - Saw the target sink. (12)

13 Apr 1945
Between 1604 and 1735 hours (zone -9), HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN), laid 40 mines off the northern entrance to the Bangka Strait in position 01°56'S, 105°04'E. (12)

17 Apr 1945
At 1515 hours (zone -9), HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN), spotted the Japanese heavy cruiser Ashigara escorted by the Japanese destroyer Kamikaze in position 05°40'S, 106°20'E. Unfortunately, the enemy made a radical course change before torpedoes could be fired. (12)

18 Apr 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) attacked but missed the Japanese heavy cruiser Ashigara west-north-west of Batavia in position 05°40'S, 106°20'E. Four torpedoes were fired from long range and none hit the target. Ashigara was escorted by the Japanese destroyer Kamikaze.

(All times are zone -9)
In position 05°40'S, 106°20'E sighted a Nachi-class heavy cruiser escorted by a destroyer bearing 142°, range about 5 nautical miles. Enemy course was 340°. Started attack.

1041 hours - Fired four torpedoes from 6000 yards. No hits were obtained. Set course to clear the area but no counter attack developed. (12)

22 Apr 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) attacked the Japanese heavy cruiser Ashigara with a spread of four torpedoes about 30 nautical miles north of Batavia, Java, Netherlands East Indies in position 05°29'S, 107°00'E. Unfortunately, all torpedoes missed their target yet again although it was thought at the time that one hit had been obtained. Ashigara was still escorted by the Japanese destroyer Kamikaze.

All times are zone -9)
1358 hours - In position 05°29'S, 107°00'E sighted a Nachi-class heavy cruiser escorted by one destroyer bearing 343°, enemy course 173°, range 5.5 nautical miles.

1413 hours - Fired four torpedoes from 6000 yards.

1417 hours - Heard one timed torpedo hit but it was not observed.

1419 hours - One depth charge was dropped, not close.

1420 hours - O 19 bottomed at 48 meters (26 fathoms).

1421 - 1428 hours - Four depth charges were dropped, all fairly distant. No serious hunt developed.

1535 hours - Got off the bottom. (12)

27 Apr 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) made the southbound passage of Lombok Strait. (12)

3 May 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) ended her 10th war patrol at Fremantle. (12)

9 Jun 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) is put on the slipway at Fremantle. (14)

12 Jun 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) is put back in the water. (14)

17 Jun 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) conducted minelaying exercises off Fremantle. (14)

22 Jun 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) conducted exercises off Fremantle. (14)

25 Jun 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) departed Fremantle with dummy mines and stores for Subic Bay, Philippines.

For the daily positions of HrMs O 19 during this passage see the map below.

(14)

28 Jun 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) arrived at Onslow, Australia. (14)

29 Jun 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) departed Onslow for Subic Bay. (14)

2 Jul 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) made the northbound passage of Lombok Strait. (14)

8 Jul 1945
HrMs O 19 (Lt.Cdr. J.F. Drijfhout van Hooff, RNN) ran aground on Ladd Reef (08°40’N, 111°40’E). (14)

9 Jul 1945
The US submarine USS Cod (Lt.Cdr. E.M. Westbrook, Jr., USN) arrived on the scene at 0721 hours (H zone) but her efforts to tow away the Dutch submarine failed. (14)

10 Jul 1945
New attempts to tow O 19 away by USS Cod failed again. At 1547 hours, the last of her crew of eight officers and forty-seven ratings had been taken on board by the US submarine. The wreck was destroyed by explosives at 1634, two torpedoes fired at 1637 and 1643 hours and sixteen 5" rounds from USS Cod at 1650-1700. (14)

13 Jul 1945
The survivors were landed at Subic Bay. (14)