What can a submarine do that most ships cannot?
AnswerTravel underwater
Submarines are built to operate submerged.
Vehicles · Facts & stats
Sub facts & stats
7 fact-checked facts about submarines, underwater vessels and ocean exploration, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
What do ballast tanks help a submarine do?
AnswerDive and surface
Filling tanks with water makes it sink; blowing in air makes it rise.
Going deeper
What was the first nuclear-powered submarine?
AnswerUSS Nautilus
USS Nautilus was launched in 1954.
The Turtle, built in 1775, was used during which war?
AnswerAmerican Revolutionary War
David Bushnell's Turtle was a one-person submersible.
Which is another regional name for a sub sandwich?
AnswerHoagie
Subs are also called hoagies, heroes and grinders.
Expert level
Which Confederate submarine became the first to sink an enemy warship in 1864?
AnswerH.L. Hunley
The Hunley sank USS Housatonic off Charleston.
Which inventor built an early navigable submarine in the 1620s and tested it on the Thames?
AnswerCornelis Drebbel
Drebbel's oar-powered boat was tested in London.
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