"Shortwave Sportfishing" wrote in message
...

Identical boats, identical props, identical RPMs, it going to be the
more horsepower that wins the day.


He's asked a good question. Assuming equal prop slippage, (or for the sake
of exercise, assume none), I think both engines would theoretically run the
boats at the same speed at a given RPM. The fact that the 250 hp engine
being a bit heavier might contribute to a bit more slippage in the real
world and may, indeed, be slower than the 200 hp.

Not to be confusing here... what I am saying is that if you treat the
engine and prop as a lossless, slipless gear train, then both engines should
produce the same speed on the same boat with the same props.

I think.

RCE