资料来源 : pyDict

舵效速度

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Steerageway \Steer"age*way`\, n. (Naut.)
   A rate of motion through the water sufficient to render a
   vessel governable by the helm.

资料来源 : WordNet®

steerageway
     n : (nautical) the minimum rate of motion needed for a vessel to
         be maneuvered