On 24 Feb 2008, at 10:47, Michael Askin wrote: > Running a propeller when free running is much lighter work than when > moored or towing
I have a problem with this concept. How does the engine know what is going on "out back" ? It turns the prop and pushes water backward or forward. I can see that it would work harder if stirring treacle rather than water, and less hard if running in air. I suppose when underway in forward gear the water being pushed backwards by the prop already has some relative backward motion relative to the prop . . . . Beeky
