
09-11-2011
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Senior Member
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Join Date: Dec 2008
Location: North Carolina
Posts: 381
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Except on very small boats, I would think that the boom should be fine in lifting 100 kg. You might want to check the support for the boom. Topping lift or halyard should be looped around the boom instead of relying on an eye fitting on the boom that might just be screwed in. Use the halyard to support the boom, and a block and tackle (could be a boom vang) to attach to boom to do the lift (again with a strong loop over/around the boom). Boom alone might not have enough vertical travel to make the lift and mainsheet, fixed boom vang, etc. would have to be removed if much vertical movement is required, thus the suggestion about a block and tackle. Load should be applied to the end of the boom where the topping lift or halyard are attached, and not at mid boom. As with real life cranes, you have to make sure that you don't overload the crane system however. The ends of the various lines should be cleated off securely. Of course whether to attempt this will depend entirely on how strong and rugged the components are, and you will have to be the judge of that. Guess wrong and overloaded things will result in damage and possible injury, so take care.
As others have pointed out, storage will be perhaps the biggest problem.
Last edited by NCC320; 09-11-2011 at 10:33 AM.
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