Join Date: Feb 2012
Location: New Orleans Louisiana
Thanked 87 Times in 83 Posts
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Re: Desperatly looking for an answer
Is this only under sail, or power or both?
If both, almost certainly a weight issue. Either too much, or in the wrong place or both.
If only under sail then it's likely a rig tune problem, trimming problem, or your sails are a year more blown out, and finally hit a critical curve in their life span.
If only under power, then check your tach. It might be giving faulty readings. Or the engine isn't getting to full RPM. weight can exacerbate this problem, as the more heavily laden she is, the more torque you need, and less speed. If the prop starts to cavitate, then additional rpm is worthless.