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From: Rosalie B. (no email)
Date: Wed Sep 08 2004 - 14:16:48 EDT
On Wed, 08 Sep 2004 11:26:26 -0400, you wrote:
>
>squidsrus85 wrote:
>
>> The boat at the top of my list comes in at 390lbs/hp and sounds good
>> to me.
>
>That's very generous, and other than fuel consumption, should be more than
>adequate for your needs.
>
>Like every other system, engines have evolved through the years.
>Originally, they were used only for maneuvering between dock and point where
>sails could be raised. Today, more people use the engines for longer
>periods, plus they're used for auxiliary purposes, such as refrigeration,
>watermakers, etc. All take HP.
>
>I felt my original 40 HP engine (which probably never produced more than 25
>HP...another long story) was inadequate when I discovered I couldn't put my
>bow into the wind of a strong thunderstorm. I now have a 50 HP engine that
>does what I need. My dry displacement is 22,500 lbs. Loaded, it probably
>closer to 30,000.
Our boat is listed at 37,000 lbs - don't know if that is dry or
loaded. I think it is probably heavier with the cruising equipment on
it.
We have a Perkins 4-154 which is supposed to be 60 hp (probably not
really that much) and I feel that the boat is underpowered. This is
about 2/3rds of you allowance. I don't have anything specific such as
Bryan has listed to go by, but the boat is difficult to maneuver in
tight quarters against wind and/or current.
The boats that are similar that have the 85 hp Perkins have a LOT more
reserve power for emergencies and under motor do much better
(depending on your definition of much of course). We are hard pressed
to do more than about 5 knots, and our friends can do 6 or more. This
is 435hp/lb. I think that is more than enough.
You may find that the line of hp/lb that is required isn't a straight
line of course.
grandma Rosalie
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