Just bought a new Jeanneau 42DS with a 54 hp yanmar. I'm trying to get an idea of fuel rate consumption at different power settings so I can guage my range for trip to home port (plan to motor quite a bit as time is a problem). Boat holds 63 U.S. gallons. I've tried yanmar website and I've been through the Yanmar engine manual but no clues as to what I can expect. Can anybody point me to a source for this information or give me even an estimate of this engines range.