Answer: gunboat

AnswerCrossword Clue
GUNBOATSmall armed warship
GUNBOATRiver patrol.
GUNBOATNavy vessel.
GUNBOATSmall armed ship.
GUNBOATPT 109, e.g.
GUNBOATSmall, armed warship
GUNBOATPort threatener
gunboatany small ship carrying mounted guns
gunboatan armed vessel
gunboatsmall, armed warship of light draft, used in ports where the water is shallow