None in war, plenty during target practice...USN lost at least two in accidents during the 1960's (USS Thresher and USS Scorpian); the USSR lost several to accidents but will only confess up the two or three of them.
The British lost 76 submarines during WWII.
52 subs were sunk (lost).
Counting warships & merchantman, US subs sunk about 1,000 vessels.
Perhaps you're thinking of the liner Lusitania which was sunk by German submarines during World War One.
after 1) Germany's submarines sunk their ships 2) they intercepted the zimmerman telegraph
Mexico was on the allies side when German submarines sunk 3 of their oil ships. So they joined in late in the war
The Germans sunk with their u-boats (submarines) the famous American cruise: The Lusitania AI-
They didn't. But "IF" they had sunk the US transports delivering US Troops to Europe...Germany could've won the war...or at least not lost it.
Yes! after the lusitania was sunk by German submarines and the press began to inform people what had happened america began to cry for war and soon america joined the war
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.
Bigger, Faster, Deeper, Comfortable, Deadlier.
Why don't you just Google "World War 1 Submarines?"