For the most number of enemy ships sunk, USS Tautog (SS-199), under 3 separate Captains, sank a total number of 26 ships, including warships and merchants.
For most ships sunk in a single war patrol, it was the USS Tang (SS-306), under legendary Captain and Medal of Honor recipient Dick O' Kane.
52 US subs "are still on patrol."
He was Commander Mochitsura Hashimoto.
Submarine Force
US Soldiers were NOT the first to fire at the enemy at Pearl Harbor. US Sailors were the first men to open fire at the enemy at Pearl Harbor. US Crewmen aboard the US Navy destroyer USS Ward, sank a Japanese Mini-Submarine (Midget Sub) prior to the aerial attack.
HMS Conqueror ("Conks") remains to date the only nuclear-powered attack submarine credited with a wartime sinking. She sank the Argentine Light Cruiser General Belgrano (a converted American CL) during the Falklands War in 1982, using standard (not homing) torpedoes.She was decommissioned in 1990.
The Hunley sank with all hands after its attack.
It sank an enemy warship
Hunley.
In the U.S. submarine force, USS Flasher (SS-249) sank the most tonnage according to official records, 21 ships totaling 100,231 tons.
The German submarine U-21 sank the British cruiser Pathfinder on September 5, 1914. U-21 survived the entire World War 1 but sank while sailing to port to surrender after war's end. The Confederate submarine Hunley sank a US Navy ship, but sunk herself for reasons that remain uncertain.
Only one US submarine sank in World War One.
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.
The German U-boat Captain who sank the most enemy ships in World War II was Otto Kretschmer. He sank a total of 47 ships (274,333 tons in total)His submarine was sunk on March 17, 1941 and he spent the rest of the war as a prisoner of war in Canada.
The Confederate submarine H L Hunley sank a Federal warship, Housatonic
USS Batfish (SS-310), a U.S. Balao-class submarine under the command of Lt. Cdr. John K. Fyfe, sank 3 Japanese submarines (I-41, RO-112, RO-113) on her Sixth War Patrol between February 9-12, 1945. For her actions, she was awarded the Presidential Unit Citation.
May 7th, 1915
A U-boat
The USS Indianapolis sank after being hit by torpedoes launched from a Japanese mini-submarine.