A Nazi U-boat crew shipwrecked in Canada try to flee to the neutral United States
Before Dec. 7, 1941, the US merchant mariners brought supplies to the Russians; with Humphrey Bogart
British raid on large ship dock at St. Nazaire, France, March 28, 1942
A British midget submarine raid damages German battleship Tirpitz, September 1943
The USS Mason, with an African-American crew, was the only such ship to sail into combat, fighting Nazi U-boats
Mini-series about German u-boat sinks the Laconia, a cruise ship transformed into a troop ship, September 12, 1942; leads to ban on U-boats picking up survivors
The USA gives Great Britain 3 ageing battleships; one of them is named "The Gift Horse" and proves very useful in a sea battle