#20479
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From MonkeyDiver: Just checked Greg’s lift calculator again, and it does already display the "wet weight". Works great and no changes needed. Not clear how big the anchor was or how the 55 gallon drums were being used in the comment above. Were they used at depth as a lifting device or just on the surface as a lift platform?...
Somewhere I have pictures of that anchor draped in chain, we spent weeks removing the chain, wished I’d saved a link. Someone had made a guesstimate at how much the anchor weighed, so much for things lookinging 25% bigger underwater :(
The drums had eye bolts welded on and were lashed to the anchor and then filled thru the bung hole. Once the anchor was pulled from the sand it rose to the surface until one drum surfaced, then stopped. The bungs were replaced but too much of the anchor hung down to clear the inlet. One drum did break loose and it looked like a WWII sub movie in reverse with the depth charge jumping out of the water!
In hind sight once the anchor was free of the sand we should have layed it back down and tied the drums to float it horizonally but we hadn’t made provisions to let the air out of the drums from the up end :(
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