World War II - USS Blenny SS-324 - 312 ft, 1,810 tons, 8 knots submerged
Everyone knows what a submarine is - a ship that can go underwater. Hardly needs any explanation. Unless you're in the US Navy. By the Navy definition, only their modern, nuclear-powered boats ( all submarines are called "boats" ) are true submarines, designed to operate beneath the surface almost indefinitely. Anything else is merely a "submersible", tied to the surface by the need for fuel and air. Whatever.
The U-151 was the first German U-boat to operate in U.S. territory in World War I. The U-151 is not actually sunk in these waters ( it was sunk deep off Virginia after the war, ) but it did "contribute" the following six shipwrecks, all on the same day, Sunday, June 2, 1918:
Submarine Defender as rebuilt with sharply raked bow, and her topsides changed, ready for launch at Lake's Bridgeport base. Above her twin propellers is the shutter of a stern torpedo tube. Lake's characteristic pair of amidships planes have been folded up (they are forward and abaft the big conning tower).
shipwreck, Type IXc/40 U-boat, Kriegsmarine, Germany
Built:
1942, Germany
Specs:
( 252 x 22 ft ) 1051 displacement tons, 48-56 crew
Sunk:
Saturday April 16, 1944
by depth charges and gunfire from destroyer escorts USS Gandy, USS Joyce and USS Peterson after torpedoing tanker Pan Pennsylvania - 44 casualties.
... I hope. There may still be an old-style chart lurking somewhere, but I think I got them all. Above is the new weather chart, with extant stations and buoys. The old chart still showed ALSN6 - the Ambrose Tower that got knocked into the water so many times that they finally gave up on it. The replacement buoy is in the exclusion zone of the shipping lane, where it should be safe.