proper pitch

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    Help! Choosing the correct prop???

    Hi all, so 2 years ago I re-powered my 1998 moorings 382 (1998 oceanis 381). The old engine was a 42hp @ 3000rpm Westerbeke with some weird gearbox from Spain. I had to translate it and found it had two different ratios for forward and reverse (forward was like 2.71:1 I think). The new...