| 摘要 |
A ship-mounted crane is provided with a compensation device for ensuring that its load rope will suspend a load selectively stationary relative to the ship, or stationary relative to a load-receiving surface relative to which the ship moves. For this purpose, the crane is provided with a second rope separate from the load rope, and main and auxiliary pneumatic springs movable independently of each other. The load rope is trained about the main pneumatic spring; while the second rope is trained about both pneumatic springs and is selectively connectible to the load-receiving surface.
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