Yesterday I made this sketch of an efficient motoryacht. I was trying for something that doesn't look like it came from outer space. I assume that will not appeal to the technically minded crowd, which is fine. She's about 62' x 13'6", around 50,000 pounds at full load, 1000 gallons of fuel. Twin 75 HP engines give 10 knots top speed and at 7 knots range is 4000 miles. One decent stateroom, room for tons of temporary guests, stand-up walk-around engine room, great living room, huge outdoor cockpit.
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