[PCW] re Domino was camera boat

[bill]

Georgs,

My current project, 19m x 56,000#, yet to be launched,
also has a pair of ~300hp engines.  I'm expecting 2
mpg @ 10kn, 1 mpg @ 20kn.  I'm sure Malcolm has
extensive records of actual mileage figures.

An advantage of the modern electronic diesel is the
ability to run efficiently at the lower speed. 
Ideally contolable pitch props could be used as well,
but I didn't want to spring for them.  I will be able
to freewheel one prop as long as the transmission temp
is monitored.

This mileage is probably comparable to larger trawlers
whereas a small trawler, a Nordhavn 40 for instance, 
would get 3.75mpg @ 6kn, 2.6mpg @ 7kn, and 2mpg @ 8
kn.

To me the question is more than miles per gallon;
there's a whole raft of reasons to go with multihulls
and performance is an important one.  I'd go nuts
making a passage at 6 knots.

Bill




 
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