centerboard

• 一种可升降的鳍状龙骨，用于帆船以防止向下风方向漂移。

A retractable fin keel used on sailboats to prevent drifting to leeward.

1. Retractable keelC1formaltechnical

   A retractable fin or board that can be lowered through the hull of a sailboat to reduce leeward drift and improve stability.

   活动龙骨

   • The sailor lowered the centerboard to prevent the boat from drifting sideways.
   • Modern dinghies often use a centerboard instead of a fixed keel.
   • He raised the centerboard before beaching the sailboat.

   同义词centreboarddaggerboard