| 摘要 |
PURPOSE:To slow down back-trawling speed easily. CONSTITUTION:A fitting sleeve 23 provided on the propeller 19 side is fitted to a propeller mounting spacer 31 provided on the propeller shaft 18 side, and the propeller 19 is held by a fixing nut 41 screwed with the end part of the propeller shaft 18. In this case, the fitting faces of the propeller mounting spacer 31 on the propeller shaft 18 side and fitting sleeve 23 on the propeller 19 side are formed into tapered faces. |
