| 摘要 |
A propelling device is provided for propelling lines from a boat to a dock or land. The device is particularly designed for larger pleasure boats which may have but one pilot or operator, but which normally require more than one person for docking. The propelling device includes a housing containing a projectile to which a line is attached, and a compressible gas or spring for propelling the projectile with the line to the dock as the boat is about to dock. The boat usually will be equipped with several of these devices and, in a preferred form, they can be remotely operated from the bridge or other suitable location on the boat. The projectile is preferably propelled by compressed gas, but spring arrangements can also be used.
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