3 Sep, 1939
HMS Electra (Lt.Cdr. S.A. Buss, RN) and HMS Escort (Lt.Cdr. J. Bostock, RN) together pick up 481 survivors from the British passenger ship Athenia which was torpedoed and sunk by the German submarine U-30 about 250 nautical miles west of Inishtrahull in position 56º44'N, 14º05'W.

25 Feb, 1940
The German submarine U-63 tried to attack convoy HN-14, in doing so she was sighted by the British submarine HMS Narwhal (Lt.Cdr. E.R.J. Oddie, RN). The escorting destoyers HMS Escort (Lt.Cdr. J. Bostock, RN), HMS Inglefield (Capt. P. Todd, RN) and HMS Imogen (Cdr. C.L. Firth, RN) were warned. They located, attacked and sank U-63 with depth charges south east of the Shetland Islands. (see map)

Books dealing with this subject include:

A Blue Water Navy, WAB Douglas, R. Sarty, M. Whitby et al., 2007
The Court-Martial of Ensign Mason, Nash, Edgar M., 2001
Destroyer Escort Sailors, Destroyer Escort Sailors Assn., 1997
Destroyer Escorts in Action, Adcock, Al, 1997
Destroyer Escorts of World War Two, Walkowiak, Thomas F., 1996
Destroyers of World War Two, Whitley, M. J., 2000
The Enemy Below, Rayner, D. A., 1956 (transl.)
The Good Shepherd, Forester, C.S., 1955 (transl.)
Little Wolf at Leyte, J. Henry, Jr Doscher, 1996
Northern Escort, Taylor, J. E., 1946 (transl.)
Tempest, Fire and Foe, Andrews, Lewis, 1999
The Buckley-Class Destroyer Escorts, Bruce Hampton Franklin, 1999
Tin Can Sailor, Calhoun, C. Raymond, 1993
USS Frost, Kerrigan, Warren J., 2001
World War II American Destroyer Escorts, Edsall Class (FMR), Borchers, Duane D., Sr.,