Type XXI submarine - Wikipedia
Indonesian submarine: 53 sailors presumed dead as navy says vessel sunk
Nuclear sub to return to base after running aground | London Evening Standard | Evening Standard
American nuclear submarine visits naval base in Scotland
Los Angeles-class submarine - Wikipedia
USS Delaware submarine arrived in Wilmington. What you need to know
Naval Sea Systems Command > Home > SUBMEPP
The day German U-Boats passed under Tower Bridge
GDEB gets $31M deal to overhaul world's first nuclear-powered submarine | Defense Brief
This summer, Ontario's most unusual roadside tourist attraction looks to prove it's no sinking ship | CBC News
US Navy Nuclear-Missile Submarines Run Late, Pile Up Billions in Costs - Bloomberg
USS Connecticut: How did a $3 billion US Navy submarine hit an undersea mountain? | CNN
USS Triton (SSRN-586) - Wikipedia
China accuses new U.S.-Australian submarine deal of stoking arms race, threatening regional peace - The Washington Post
Royal Navy Submarine Museum and Spinnaker Tower, Hampshire - A family day out
submarine | Definition, History, Types, Characteristics, & Facts | Britannica
Submarine - Wikipedia
