[Public-List] 18 horsepower

[dickdurk at atlanticbb.net]

Larry;

Diesel output is measured in shaft horsepower, gas engines 
by brake horsepower. My 15 HP diesel puts much more thrust 
in the water than the A4 ever did. Then there is the issue 
of what RPM is used to develop the A4's HP rating. I never 
had a tach, but I don't believe the A4 ever comes close to 
it's test range in normal operation.

As far as what power to have in reserve for head 
winds/seas, that has been a subject of much discussion.

MichaelGrosh
#220


On Sun, 20 Jul 2008 18:28:43 -0400
  "Jody and Larry" <woodrat at citynet.net> wrote:
> Many thanks to the many kind folks who responded to my 
>questions about companionway stairs and the original 
>factory table.  The list is truly a treasure.
> 
> Now I am beginning to be concerned about more 
>substantive things.  The boat has an 18 hp, 2 cylinder, 
>Yanmar.  I am wondering if anyone has similar power in 
>their boats.  18 horsepower seems like quite a difference 
>from a 30 horse Atomic Four.  I'm sure that the Yanmar 
>would power to hull speed,  but am wondering if there is 
>much in reserve for strong headwinds and or steep seas on 
>the nose.  Would appreciate some wisdom of the BTDT type.
> 
> Also was wondering if anyone could recommend a surveyor, 
>with Alberg 30 experience, in the Annapolis area?
> 
> Thanks, Larry
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