A satisfying, safe, economical and environmentally responsible explorer yacht must perform well over a range of wind-conditions and directions to:
Moving at a whisper and achieving dramatic top speeds is not important.
Assuming two hours per day of engine use total and a fuel consumption of 3l/hr for propulsion/power generation/watermaking and 2l/hr for power generation/watermaking and 1.5 l for power generation only, estimated fuel burn is as follows: