T&T: Diesel fuel consumption

[Jim Ague]

>I took the formula in reverse. My Willard 40 with a NA Perkins 135, 
>consumes
> 2 g.p.h. at 7.5 knots. Using Larry's formula, that says I'm only using
> 33.333 horsepower at 1800rpm.

Same engine, another data point, for what it's worth: Monk 36, NA Perkins 
135, 2.25gph at 7.5 knots per formula using 37.5 HP at 2050 RPM.

The two data point might say something about the hull designs, Monk 36 vs 
Willard 40. It takes a little more efort to move the Monk 36 through the 
water.

-- Jim Ague
M/V Derreen, Monk 36