Bingo! - I've toyed with the idea (without the requisite understanding of physics & engineering) - but a 5-ton keel swinging across even a few inches has a LOT of potential energy.
Commercial fishing vessels have "flopper stoppers" - louvered plates suspended from the sides of the vessel. They are poweerfully built (2" pipe, large 3/8chain, etc) because of the enormous forces involved.
Actually - even an anchor "snubber" ought to be able to produce quite a lot of force.
Sign me up!
-Keith
--- In electricboats@
> Boats offer another type of opportunity that has to be exploited, that of wave energy. Laying at anchor, I've often considered how to harness the incessent rocking motion of the sea, either by pumping a fliud into an accululator, or by directly converting the motion to rotation to turn a micro generator. If any member wants to endevor such a undertaking, I'll be glad to supply them with a suitable proto-type generator. The energy could be captured as the relative motion between an bouy and the boat, using the rigid connecting arm to drive a mechanism at a hinged connection at the boat. In addition to "free energy", the effect would also add to the comfort of the boat by reducing pitching while on a hook.
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