Pigboat — synonyms, definition

1. pigboat (Noun)

U-boat sub submarine

pigboat (Noun) — A submersible warship usually armed with torpedoes.

submersible submersible warship attack submarine auxiliary research submarine fleet ballistic missile submarine nautilus nuclear submarine nuclear-powered submarine Schnorkel asdic breather conning tower echo sounder escape hatch periscope schnorchel snorkel snorkel breather sonar