RE: The start of a nice project (clipper 30ft)
"Seems 2200 is quite allot for that engine."
"Maybe the boat wasn't*propped right."
Being a 2500rpm engine it's obviously 300rpm down.
"but how do you measure that with tide and wind?"
Go on a course where the tide and wind are more or less stable. Observe your GPS speed until you've got a good average of steady readings * * *....turn around 180 degrees and go in the opposite direction. If you go 7 knots one way and 8 knots the other you're going 7.5 knots. Still not really accurate but quite close. Before we went to Alaska I wanted to go into Lake Washington. They have a measured mile marked off on one of the floating bridges. Timing one's self over a measured mile at various engine speeds in lakes w basically no current can be very accurate. Observe your speed on a time/distance speed chart. Take a Power Squadron course.
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