"ed" wrote:
Think about range. calculate 2000 miles distance by a 5 mpg and
you need how many gallons of fuel on board? How much space does
400 gallons of fuel require? How and where will you store it?
Safely. What will the added weight (about a ton) do to stability?
To mileage and handling? If you use bladders, will chafing cause
a catastrophic leak?

editor
http://www.marineenginedigest.com

I forgot to say that the MacGregor is a sailboat :-)

It may not perform well crossing an ocean and may take twice
as long as a good sailboat but since it cannot sink or capsize
you won't have to worry about getting eaten by sharks.