length of a boat
Rare technical term for the overall length of a small boat or watercraft. In everyday contexts, 船の長さ or 全長 is more common.
The length of this boat is 5 meters.
He served as the coxswain of the lifeboat.
The captain of a midget submarine commands from within the cramped vessel.
Compound of 艇 (small boat) and 長 (leader, head). The second sense 'length of a boat' is a rare extension using 長 in its meaning of 'length'.