The GB36 question is anwsered-from my perspective, it was a mistake and I don't need to be involved.
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MY Trawler at 43lwl, bulb bow, round ass, hard chine*and* at an s/l of 1.2* and a pc of .55 with 2.85 gears pushing a 34 inch prop at 1400rpm*(the torque peak)is achieving 7.5knots with a deere...