View Single Post
Old 07-01-2012, 05:05 AM   #35
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 22,553
Coot does about 6.5 knots running its single 80 h.p. JD 4045DFM70 at 1600 RPM using 1.3 gallons per hours,

Four! With the throttle pushed to the wall (2400 RPM). ... Ouch.

So that last Knot costs 2.7 gph EXTRA!

For the folks that keep on dreaming of cruising at theoretical "hull speed" , read the above a few times.

Hyper efficient can only come from a light skinney boat with proper power installed.

SO WHAT?

Any boat operated at SL 1 or so (the sq rt of the lwl) will be cheap to keep.

With really minor 6 K power requirements gas is far more efficient than an underloaded diesel.

A $5- $10K 36 Uniflite at 5 or 6 K will be a far better round trip than a custom built "hyper efficient" boat of any style.

Round Trip is buy it , fix it, use it and sell it.

The real cost of boating.

FF
FF is offline   Reply With Quote