also: まぼ
noun
spread-out sail; full sail; downwind sailing
Nautical term for a sail fully extended to catch the wind, or sailing with the wind directly behind. Contrasts with 片帆 (a sail set at an angle).
See also: 片帆
真帆を受けて船が進む。
The boat moves forward with its sail spread out to the wind.
真帆で走るときは風向きに注意が必要だ。
When sailing downwind, you need to pay attention to the wind direction.
片帆 refers to a sail set at an angle to the wind (close-hauled), while 真帆 is a sail fully spread out when running downwind.
Compound of 真 (ま, 'true' or 'full') and 帆 (ほ, 'sail'). The reading まぼ is a rare voiced variant.