USS Thresher
The USS Housatonic, sunk by the Confederate submarine CSS Hunley.
Nobody. The submarine was captured before it was sunk.
it was the css hl hunly
Submarines do get sunk in the sea.
Lusitania
Yes
The Confederacy led in the experimentation with submarines. The most successful was the HL Hunley. This submarine sunk a Union warship however the sinking ship damaged the submarine that also sank.
German submarine ;
Frisen
Germany practiced unrestricted submarine warfare.
There is no ship known, it is not the Lusitania, which was an English ship.
It sunk in 1942