- submarine, pigboat, sub, U-boat - a submersible warship usually armed with torpedoes
--1 is a kind of submersible, submersible warship
--1 has parts:
--1 has particulars:conning tower; escape hatch; periscope; snorkel, schnorkel, schnorchel, snorkel breather, breather; sonar, echo sounder, asdic attack submarine; auxiliary research submarine; fleet ballistic missile submarine; nautilus, nuclear submarine, nuclear-powered submarine