Quote:
Originally Posted by Fstbttms
A lot of people don't realize (or care) that it doesn't take much fouling at all to have a significant effect on boat speed.
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I do!!
Under power or light air, the difference in boat speed for us is about 20%. Dirty bottom and fouled prop is 5-5.5 knots. Very Clean = 6-6.5 knts. All at the same engine RPM. Sailing in a stiff breeze we don't notice it at all, but in light air....
I think the effects are more exaggerated for boats like ours with comparatively large wetted surface area.