"Shortwave Sportfishing" wrote in message
...

You are discounting inertia and momentum as a factor. More horsepower
will overcome base inertia and add momentum meaning that the larger
engine will have to work less to maintain, or even increase, speed
given the same RPM.

Agreed. But in this exercise all we need to deal with is sufficient power
to overcome base inertia to achieve 6000 RPM and we have stipulated that the
200 hp engine can, for purposes of discussion. The rest is gearing.

RCE