Answer: heaveto

AnswerCrossword Clue
HEAVETODecelerate, at sea
HEAVETOBrake one's boat
HEAVETOStop, in sailor's lingo
HEAVETOHalt, nautically
HEAVETOKeep motionless, as a ship
HEAVETOStop the ship
HEAVETOStop, to a sailor
HEAVETOStop, at sea
HEAVETONautical command