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Old 11-10-2019, 06:19 PM   #1
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Efficient no wash hull shapes

Pulled some old footage off the phone today and still amazes me at how quiet and stress free our old girl travels.

@ 1150 rpm (not 11500 as stated )and a but of current assist



Check out the wash or lack thereof.

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Old 11-10-2019, 07:12 PM   #2
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Make a bit more fuss at hull speed?
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Old 11-10-2019, 07:15 PM   #3
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Three knot or so current?
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Old 11-10-2019, 07:48 PM   #4
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Three knot or so current?
Not sure exactly but we usually do 7.5 knots at 1150rpm
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Old 11-10-2019, 07:49 PM   #5
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Make a bit more fuss at hull speed?
Marginally.
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Old 11-10-2019, 08:53 PM   #6
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That's impressive. I can almost match the wash up front at low speeds, but your stern wake is cleaner / smaller than mine is at idle!
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Old 11-10-2019, 09:06 PM   #7
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I wish I had a no wash hull shape, I have to wash mine when it gets dirty...
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Old 11-12-2019, 10:53 AM   #8
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I understand the the Prismatic Coefficient of a hull design gives a good indicator how much water will be displaced as it moves at certain speeds. The lower the number the "finer" the entry of the boat and hence less wake. That's how I read it.

My Krogen 54 has a PC of 0.6 and at a couple of knots under hull speed displays a wake much like yours.

Richard
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