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Notable events involving Potentilla include:

9 Apr 1942
HNoMS Potentilla served in the Liverpool Escort force from 9 April 1942 until 13 March 1944. (1)

14 Apr 1942
HrMs O 10 (Lt. J.H. Geijs, RNN) participated in A/S exercises off Lough Foyle together with USS Mayo (Lt.Cdr. I.T. Duke, USN), HNoMS Rose, HMS Venomous (Cdr. H.W. Falcon-Steward, RN), HMS Burwell (Lt.Cdr. S.R.J. Woods, RNR), HNoMS Acanthus, USS Simpson (Lt.Cdr. E.J. Burke, USN), HNoMS Potentilla and HNoMS Eglantine. (2)

15 Aug 1942
HMS H 43 (Lt. J.C.Y. Roxburgh, DSC, RN) conducted A/S exercises off Lough Foyle with HNoMS Montbretia and HNoMS Potentilla. (3)

25 Aug 1942
HNoMS Potentilla (Lt.Cdr. C.A. Monsen) picks up 16 survivors from the Norwegian merchant Trolla that was torpedoed and sunk by German U-boat U-438 south-east of Cape Farewell in position 48°55'N, 35°10'W.

30 Aug 1942

Convoy HX 205.

This convoy departed Halifax on 30 August 1942.

On departure from Halifax the convoy was made up of the following merchant vessels; Alcoa Master (American, 5114 GRT, built 1919), Alcoa Rambler (American, 5500 GRT, built 1919), Antilochus (British, 9082 GRT, built 1906), Audacious (Panamanian, 7166 GRT, built 1913), Beaverhill (British, 10041 GRT, built 1928), Bello (Norwegian (tanker), 6125 GRT, built 1930), Brilliant (American (tanker), 9132 GRT, built 1930), Brimanger (Norwegian, 4883 GRT, built 1929), British Character (British (tanker), 8453 GRT, built 1941), British Glory (British (tanker), 6995 GRT, built 1928), Cefalu (Honduran, 5221 GRT, built 1930), City of Bombay (British, 7140 GRT, built 1937), Clan MacPherson (British, 6940 GRT, built 1929), Emma Bakke (Norwegian, 4721 GRT, built 1929), Empire Airman (British (tanker), 9813 GRT, built 1942), Empire Emerald (British (tanker), 8032 GRT, built 1941), Empire Gold (British (tanker), 8028 GRT, built 1941), Empire Kamal (British, 7862 GRT, built 1938), Exchester (American, 4999 GRT, built 1919), Ferncourt (British (tanker), 9918 GRT, built 1938), Fort Amherst (British, 3489 GRT, built 1936), Gdynia (Swedish, 1636 GRT, built 1934), Grey County (Norwegian, 5194 GRT, built 1918), Hoegh Scout (Norwegian (tanker), 9924 GRT, built 1939), James J. Maguire (British (tanker), 10525 GRT, built 1939), Katy (Norwegian (tanker), 6825 GRT, built 1931), Kosmos II (Norwegian (whale factory ship serving as tanker), 16966 GRT, built 1931), Lady Rodney (Canadian, 8194 GRT, built 1929), Lancastrian Prince (British, 1914 GRT, built 1940), Luminetta (British (tanker), 6159 GRT, built 1927), Lynghaug (Norwegian, 2829 GRT, built 1919), Magdala (Dutch (tanker), 8248 GRT, built 1931), Mark Twain (American, 7176 GRT, built 1942), Minerva (Norwegian, 5883 GRT, built 1930), Molda (Norwegian, 5137 GRT, built 1937), Nicania (British (tanker), 8179 GRT, built 1942)), Norheim (Norwegian (tanker), 9816 GRT, built 1941), Nortun (Panamanian, 3663 GRT, built 1940), Ocean Rider (British, 7178 GRT, built 1942), Ocean Verity (British, 7174 GRT, built 1942), Pacific Grove (British, 7117 GRT, built 1928), Port Alma (British, 8400 GRT, built 1928), Rapana (British (tanker), 8017 GRT, built 1935), Reverdy Johnson (American, 7191 GRT, built 1942), Richard Henry Lee (American, 7191 GRT, built 1941), Robin Goodfellow (American, 6885 GRT, built 1920), Saint Bertrand (British, 5522 GRT, built 1929), Sandanger (Norwegian (tanker), 9432 GRT, built 1938), Thorshov (Norwegian (tanker), 9955 GRT, built 1935), Thorshovdi (Norwegian (tanker), 9944 GRT, built 1937), Turrialba (British, 4961 GRT, built 1909), Ulysses (Dutch, 2655 GRT, built 1918), Walt Whitman (American, 7176 GRT, built 1942), Waroonga (British, 11243 GRT, built 1914), Westland (Dutch, 5888 GRT, built 1931), William Wirt (American, 7191 GRT, built 1942), Zacapa (American, 5013 GRT, built 1909) and Zebulon B. Vance (American, 7176 GRT, built 1942).

The escort carrier (in an aircraft ferry role), HMS Dasher (Cdr. C.N. Lentaigne, DSO, RN) and the rescue ship Melrose Abbey (British, 1924 GRT, built 1929) were also part of the convoy.

On departure from Halifax the convoy was escorted by the destroyers HMS Vanoc (A/Cdr. C.F.H. Churchill, RN), HMS Buxton (Lt.Cdr. I.J. Tyson, RD, RNR) and the corvettes HMCS Camrose (T/Lt L.R. Pavillard, RCNVR), HMCS Midland (T/Lt. A.B. Taylor, RCNR) and HMCS Sorel (T/Lt. M.H. Wallace, RCNR).

Around 0930Z/2, the destroyer HMS Viscount (Lt.Cdr. J.V. Waterhouse, RN) and corvette HNoMS Potentilla joined in position 46°23'N, 51°37'W. HMS Vanoc and HMS Buxton then parted company.

Around 1100Z/2, the corvettes HNoMS Acanthus, HNoMS Eglantine, HNoMS Montbretia and HMS Borage (T/Lt.Cdr. A. Harrison, RNR) joined the convoy in position 46°33'N, 51°24'W. HMCS Camrose, HMCS Midland and HMCS Sorel then parted company.

Also on 2 September the Fort Amherst and Lady Rodney left the convoy for St. Johns, Newfoundland.

Around 1310Z/2, HMS Viscount left the convoy due to a machinery defect having developed. She returned to St. Johns, Newfoundland to effect repairs.

Around 1940Z/2, the destroyer HMS Broke (Lt.Cdr. A.F.C. Layard, RN) joined as temporary replacement of HMS Viscount.

Around 2000Z/4, HMS Viscount rejoined the convoy in position 50°27'N, 39°41'W. HMS Broke then parted company.

Around 2000Z/8, in position 56°17'N, 18°17'W, the merchant vessel Beaverhill was detached. She took HMS Borage with her as escort. The corvette was to escort her until 07°00'W after which she was to proceed to Londonderry.

Around 0300Z/10, HMS Dasher parted company to proceed independently to the Clyde.

Around 0530Z/10, the Loch Ewe portion of the convoy was detached to proceed there unescorted. At the same time HNoMS Potentilla was detached to proceed to Greenock.

The main portion of the convoy arrived in U.K. water later on the 10th. (4)

19 Sep 1942
HMS H 32 (Lt. J.R. Drummond, RN) conducted A/S exercises off Lough Foyle with HNoMS Montbretia and HNoMS Potentilla. (5)

13 Oct 1942
HNoMS Potentilla (Lt.Cdr. C.A. Monsen) picks up 10 survivors from the Norwegian merchant Fagersten that was torpedoed and sunk south of Cape Farewell in position 53°05'N, 44°06'W by German U-boat U-221.

14 Oct 1942
HNoMS Potentilla (Lt.Cdr. C.A. Monsen) picks up 77 survivors from the British whale factory ship Southern Empress that was torpedoed and sunk northeast of St. John's in position 53°40'N, 40°40'W by German U-boat U-221.

18 Nov 1942
HNoMS Potentilla picked up 20 survivors from HNoMS Montbretia that was torpedoed and sunk in the Atlantic in position 53°37'N, 38°15'W by German U-boat U-262. Some of the survivors were badly injured and two later died. (1)

30 May 1943
HMS Universal (Lt. C. Gordon, RN) conducted A/S exercises off Londonderry with HMS Kingcup (Lt.Cdr. R.A.D. Cambridge, DSC, RNR) and HNoMS Potentilla. (6)

14 Jun 1943
HMS Syrtis (Lt. M.H. Jupp, DSC, RN) arrived at Larne. She then conducted A/S exercises off Larne with HNoMS Potentilla and HNoMS Rose. (7)

15 Jun 1943
HMS Syrtis (Lt. M.H. Jupp, DSC, RN) conducted A/S exercises off Larne with HNoMS Potentilla, HNoMS Rose and HMS Vanquisher (Lt.Cdr. G.A.G. Ormsby, RN). (7)

24 Oct 1943

Convoy SC 145.

This convoy departed Halifax on 24 October 1943.

On departure from Halifax the convoy was made up of the following merchant vessels; Agwistar (American, 4661 GRT, built 1919), Athelprince (British (tanker), 8782 GRT, built 1926), Atlantic (Panamanian, 6132 GRT, built 1919), Baltrover (British, 4916 GRT, built 1913), Baron Dunmore (British, 3938 GRT, built 1933), Bayou Chico (American, 5401 GRT, built 1920), Benedick (British (tanker), 6978 GRT, built 1928), Bonaire (Dutch, 3164 GRT, built 1926), Boston City (British, 2870 GRT, built 1920), Chr. Th. Boe (Norwegian (tanker), 6192 GRT, built 1930), Clam (British, 7404 GRT, built 1927), Delmar (American, 5107 GRT, built 1920), Dundee (British, 1541 GRT, built 1934), El Ciervo (British (tanker), 5841 GRT, built 1923), El Grillo (British (tanker), 7264 GRT, built 1922), Fort Slave (British, 7134 GRT, built 1942), Gudfor (Norwegian, 2280 GRT, built 1928), Gyda (British, 1695 GRT, built 1934), H.M. Flagler (Panamanian (tanker), 8208 GRT, built 1918), Kingman (Panamanian, 1513 GRT, built 1934), Leerdam (Dutch, 8815 GRT, built 1921), Maycrest (British, 5923 GRT, built 1913), Michigan (Panamanian (former French), 6419 GRT, built 1920), Orwell (Norwegian (tanker), 7920 GRT, built 1905), Pacific Shipper (British, 6290 GRT, built 1924), San Felix (British (tanker), 13037 GRT, built 1921), San Valerio (British (tanker), 6493 GRT, built 1913), Sarazen (British, 5401 GRT, built 1920), Sulev (British (former Estonian), 2233 GRT, built 1908), Van de Velde (Dutch, 6389 GRT, built 1919), Vav (Norwegian (tanker), 6415 GRT, built 1931) and Wisla (Polish, 3108 GRT, built 1928).

On departure from Halifax the convoy was escorted by the destroyer HMCS Annapolis (Lt.Cdr. A.G. Boulton, RCNVR) and the corvettes HMCS Kenogami (T/Lt. J.L. Percy, RCNVR), HMCS Saskatoon (Lt.Cdr. T. MacDuff, RCNR) and HMCS Shediac (T/A/Lt.Cdr. A. Moorhouse, RCNR).

The minesweeper HMCS Clayoquot (T/Lt. C.L. Campbell, RCNVR) was with the convoy during 25/26 October 1943.

On 28 October 1943, the original escort from Halifax parted company to proceed to St. Johns, Newfoundland after the relief escort had joined coming from St. Johns. This relief escort was made up of the destroyers HMS Fame (Cdr. R.A. Currie, RN), HMS Vanquisher (Lt.Cdr. G.A.G. Ormsby, RN), frigates HMS Deveron (Lt.Cdr. R.E.H. Partington, RD, RNR), HMS Domett (T/A/Lt.Cdr. S. Gordon, RNVR) and the corvettes HNoMS Potentilla, HNoMS Rose and HMS Linaria (T/A/Lt.Cdr. R.H. Jameson, RNR).

Around 1105P/29 the escort carrier HMS Fencer (Capt. E.W. Anstice, RN) and the destroyers HMS Inconstant (Cdr. R.H. Mills, RN), ORP Garland (Kmdr.ppor. (Cdr.) S. Biskupski) and ORP Burza (Kmdr.ppor. (Cdr.) F. Pitulko) joined the convoy. They parted comanay with the convoy to proceed to the Clyde around 1320N/2.

The convoy arrived in U.K. waters on 6 November 1943.

19 Nov 1943
HMS Sirdar (Lt. J.A. Spender, RN) conducted A/S exercises off Larne with HNoMS Potentilla (Lt. T. Jacobsen, RNorN) and HMS Philante (Capt. A.J. Baker-Cresswell, DSO, RN). (8)

20 Nov 1943
HMS H 32 (Lt. K.S. Renshaw, DSC, RNR) conducted A/S exercises off Lough Foyle with HNoMS Potentilla. (9)