"Jeff Morris" wrote in message
news
Scotty's boat has an LWL of 25 so 5 knots means an S/L of 1.0. Pushing a
boat
at S/L of 1.0 needs one HP per 1200 pounds, which for 7500 pounds is 6.25.
Assuming 0.055 gal/hp/hour means about .35 gal/hour or about 35 hours run
time.
At 5 knots, that should give him a range of 175 miles.

If you look at the specs of the 2GM20, these numbers are close to
realistic,
though there are variables not considered, such has the propeller setup,
and the
cleanliness of the hull.

So in theory, there should be no problem. If his only concern is no wind,
then
he should be able to come close to these idealized numbers, or even do
better by
slowing down some. However, if headwinds are a problem,or if the is
absolutely
no alternative source of fuel, he might want to carry a reserve,
especially
since he can gain 50% capacity with a low cost jug lashed on deck.


That sounds like what I said, doesn't it?

I must have been wrong when I thought that you were disagreeing with me.



Regards

Donal
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Regards


Donal
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