drift sail

(nautical) A sail immersed in the water, used for lessening the drift of a vessel during a storm.

Japanese Meaning

（海事用語）悪天候時、特に嵐の際に船の漂流を軽減する目的で、水中に設置される帆

During the storm, the captain ordered the crew to lower the drift sail to slow the vessel's drift.

嵐の間、船長は船の流れを遅らせるためにシーアンカーを下ろすよう乗員に命じた。

Sense（1）

(nautical) A sail immersed in the water, used for lessening the drift of a vessel during a storm.

drift sails

（ plural ）