December 28th - On This Date

1941	Templar	Submarine HMS Templar laid down
1943	Spark	Submarine HMS Spark launched
1943	Vulpine	Submarine HMS Vulpine launched
1945	Sentinel	Submarine HMS Sentinel completed
1942	HMS Ursula	HMS Ursula torpedoes and sinks the German merchant Odysseus about 12 nautical miles north-west of Marettimo Island, Italy.
1943	HMS Sea Dog	HMS Sea Dog torpedoes and sinks the German transport ship Oldenburg about 2.5 nautical miles east-north-east of Honningsvåg, Selje, Norway.
1943	HMS Uproar	HMS Uproar fires four torpedoes against the Italian merchant Chisone off Genova, Italy. All torpedoes fired missed their target.
1944	HMS Thule	HMS Thule attacks a submarine off Penang. HMS Thule claims a kill but the torpedoes have exploded prematurely so the submarine escapes unharmed.