RW Salnick wrote:
I can only offer this direct, real-world comparison. Two years ago,
we (and our 50' ketch, Perkins 4-236 4 cyl diesel) made a month-long
trip from Seattle to Desolation Sound and back. During the same time
frame, friends of ours down the dock made essentially the same trip in
their 55' (?) trawler-style power boat. Not sure of the power plants,
but they are also diesel. We burned 95 gallons of diesel over the
course of the month. The power boat burned 895 gallons of diesel.


Cal Vanize wrote:
How much time was spent under sail?


Going at what speed?

Not meaning to be suspicious but a lot of "trawler style"
power boats these days are semi-planing hulls disguised to
look like tugboats.

If two boats of relatively similar LWL & displacement motor
at the same speed, their fuel consumption will generally be
pretty close to the same.

Now, how much did you spend on sails & running rigging, and
how much fuel would that amount buy?

DSK