54
Mercury used as ballast
Counting warships & merchantman, US subs sunk about 1,000 vessels.
Submarines do get sunk in the sea.
52 subs were sunk (lost).
There were no submarines sunk or damaged during the attack on Pearl Harbor; all vessels either sunk or damaged were capital ships (battleships, cruisers, etc.) or support vessels (tenders, tugs, etc.).
These merchantmen are KNOWN to be sunk by Japanese submarines during WWII off the US West Coast (there are several others sunk by explosions, but cannot be verified as sunk by submarines):1941 - Emidio, tanker, torpedoed1941 - Montebello, tanker, torpedoed1942 - Coast Trader, freighter, torpedoed1942 - Larry Doheny, tanker, torpedoed
Of the 52 US Navy Submarines lost during WW2, fifty were lost in the Pacific and only two were lost in the Atlantic Oceans (both by accidents). The two Atlantic US Submarines lost were the USS Dorado and USS R-12. The Submarine DORADO was sunk by friendly fire (US Aircraft) and the Submarine R-12 was sunk during a diving accident.
after 1) Germany's submarines sunk their ships 2) they intercepted the zimmerman telegraph
It was sunk by German u-boats (submarines).
The British lost 76 submarines during WWII.
The SS Emidio was sunk off California in 1941. The SS Montebello was sunk in 1941. SS Coast Trader (Freighter) sunk in '42. SS Larry Doheny sunk in '42. All believed sunk by Japanese Submarines on the US West Coast.