Next message: Bryan Genez: "Re: [world-cruising] Re: boat shopping & engines"
Sorry you were right. I get mixed up with tons and 1000 lbs. My boat is 8
ton or 16,000 lbs. Which now makes me mystified because the 30,000lbs boat
sure a lot more sluggish with the same power ratio.
There must be aspects like beam/length and prismatic coefficients etc.
Regards
Barry
----- Original Message -----
From: "Phil Sherwood" <>
To: <>
Sent: Saturday, April 14, 2007 11:45 AM
Subject: Re: [world-cruising] Re: boat shopping & engines
> Maybe I got the facts garbled ... I thought you said your Irwin
> displaced 16,000 lbs and had a 30 hp engine, which would be pretty
> darn close to the 2hp/1K lbs guideline. Apologies if I
> misread/misremembered the details.
>
> In terms of gallons-per-hour usage, I'd guess that it would be about
> a push between the smaller engine working its heart out and the
> larger engine purring along in the middle of its torque curve,
> perhaps with the larger engine using slightly less fuel in absolute
> terms. But I'd think the engine working less hard would last much
> longer. (This assumes that the hypothetical boats in question here
> are neither under- nor over-propped.)
>
> Phil
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> Yahoo! Groups Links
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