A tow rope is used to tow a propeller-like rotor attached to the end of the rope, and the number of rotations of the rotor is read on an indicator attached to the stern of the ship. Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information |
〘名〙 船舶の速度と航走距離を計る器械の一つ。曳綱(ひきづな)の先にプロペラ状の旋回子を付けたものを曳航し、船尾に取り付けた指示器で旋回子の回転数を読むもの。
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