noun
flying boat
A type of seaplane whose fuselage acts as a hull, allowing it to land on and take off from water.
第二次世界大戦中、飛行艇は長距離哨戒に使われた。
During World War II, flying boats were used for long-range patrols.
Compound of 飛行 (hikō, 'flight') and 艇 (tei, 'boat'). The term is a direct calque of English 'flying boat'.