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Old 02-03-2017, 12:16 PM   #6
psneeld's Avatar
City: AICW
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 20,373
My 40 Albin (SD but closer to the FD curves than planing) severely fouled dropped about 1/2-1 knot at cruising RPM..with medium barnacles on hull and 6 inch or more soft growth...lots falls off when getting underway, but not all.

So 6.3 knots to around 5.5 or so....Medium growth( some banacles and pretty solid but shorter soft stuff) and I hardly noticed.

I didn't do a cruise with it like that...but some runs up and down in front of the marina to shake some stuff off.
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