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Horsepower vs thrust
Hi,
Too many years ago I spent a month aboard one of Uncle Sam's grey yachts, the Garcia. It was powered by what looked like a huge single shaft electric grinder motor, complete with a round "GE" emblem about a fathom across. The electricity was provided by gas turbine driven generators. Electric power allowed complete and immediate control directly from the bridge. This, plus seeing my marina neighbor polishing his boat using power from a portable 2KW Honda generator got me thinking. Should my ancient Atomic-4 die, would it be feasible to replace it with a pair of thrusters designed for maneuvering bigger boats; these driven from a BIG battery in turn charged by a pair of these Hondas? Trouble is, thrusters are rated in pounds of thrust and I dunno how that relates to HP so I can't figure how much thrust it's take to push my Catalina 30 down the bounding main at say 5 or 6 kts. Anybody know how to relate thrust to HP? Anybody tried electric power in a medium size sailboat? TIA, Vito |
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