My tach is very unreliable,
and I have only pushed it that fast a few times. If motoring cause there's no wind I do about 5.2 knots at what the tach says is 1800 (to be honest I go by sound and feel more,) it's a point that just "feels right". Engine and drivetrain are smooth and quiet (relatively) and engine temp is in midrange. I'll pay closer attention tomorrow, seems like the last few months we've had big swells or chop or both.
