Reply To: What size propellers??

Bruce,

It seems strange that the sailing performance is worse with the blades locked. Race boats routinely lock the blades (if no folders fitted) and it's supposed to change the loss of speed from 0.5knt to about 0.3knt. Of course that's with just 1 prop. Excuse my complete ignorance, but with the gearboxes in reverse, is the water trying (and suceeding) to slowly turn the props in reverse? Racers use a gearbox lock and one I saw used a mole wrench on the coupling – a bit scarry if you forget it's clamped on there and start the engine!!! 🙂