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Old 13-08-2011, 10:50   #46
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Re: Six Year Refit . . . Is 3.5 Knots Under Power Too Slow ?

Joshua Slocum should be required reading? lol
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Old 13-08-2011, 13:27   #47
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Re: Six Year Refit . . . Is 3.5 Knots Under Power Too Slow ?

Congratulations!! Good to have it turn out to be a simple fix.

Chip log was taught back in my old Navy days but I don't think folks teach that anymore.

FAQ: What is a knot? What is a nautical mile?

Another system mentioned is clocking a piece of flotsam moving past the hull from a measured point forward to aft and calculating your speed.
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Old 13-08-2011, 13:58   #48
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Re: Six Year Refit . . . Is 3.5 Knots Under Power Too Slow ?

Quote:
Originally Posted by DeniseO30 View Post
Oops! "Never mind" (crawls back under rock)



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Old 20-08-2015, 20:34   #49
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Re: Six Year Refit . . . Is 3.5 Knots Under Power Too Slow ?

Get rid of that folding prop, get a MP ( machine pitch ) for max thrust. I doubt you will actually see any reduced speed under sail due to prop drag. Michigan Prop has a form that will help you figure out size. A prop can be reduced in diameter and increased or decreased in pitch, with each inch worth approximately 200 +- rpm. Or you can buy a Max Prop (from PYI ) which is pitch adjustable for fine tuning. They also have a guide for setting the pitch and the folks at PyI are very helpful.
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Old 20-08-2015, 20:47   #50
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Re: Six Year Refit . . . Is 3.5 Knots Under Power Too Slow ?

Well congratulations Captain Bill 3. You have revived an ancient thread and gave bad advice to a problem that was already solved in 2011.
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Old 20-08-2015, 21:12   #51
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Re: Six Year Refit . . . Is 3.5 Knots Under Power Too Slow ?

Gotta admit, a dud GPS reading would be close to the last thing I'd think of...
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