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noun
A submersible warship usually armed with torpedoes.
synonyms: sub, submarine, U-boat.
is a specific kind of: submersible, submersible warship.
is a broader term that covers: attack submarine | auxiliary research submarine | fleet ballistic missile submarine | nautilus, nuclear-powered submarine, nuclear submarine.
has as a part: conning tower | escape hatch | periscope | breather, schnorchel, schnorkel, snorkel, snorkel breather | asdic, echo sounder, sonar.
derivation: submarine, undersea.
Dutch: U-boot, duikboot, onderzeeboot, onderzeeërPolish: okręt podwodny
Find more on pigboat elsewhere: etymology - rhymes - Wikipedia.
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