"Underwater warship that operates on nuclear energy; it can remain underwater for months without surfacing."
WORLD WAR II NAVAL GLOSSARY and TERMINOLOGY
"Note: The majority of terminology below refers primarily to the U.S. Navy and/or to U.S. submarines.
Several items, however are specific to both U-boats and the German Kriegsmarine and are so noted."
Unthinkable - 15 April 2009
"BRITISH and French nuclear submarines which collided deep under the Atlantic could have sunk or released deadly radioactivity, it emerged last night.
The Royal Navy’s HMS Vanguard and the French Navy’s Le Triomphant are both nuclear powered and were carrying nuke missiles.
Between them they had around 250 sailors on board..."
- Yellow Submarine "is a 1968 British animated musical fantasy film based on the music of The Beatles..." (YouTube)
20,000 Leagues Under the Sea