sea anchor

sea-anchor的词性：
n.Nautical （名词）【航海】

1. A drag, usually a canvas-covered conical frame, floating behind a vessel to prevent drifting or to maintain a heading into the wind.Also called drogue
海锚：通常由帆布覆盖的锥形结构，抛在船后防止船漂移或者保持船朝着风势也作 drogue