Fuel Economy

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   Little more detail on fuel consumption. Dubs is a 2021 Hanse 348 with a 2 blade folding prop. On our most recent 4-week, 300-mile cruise, I was able to sail 70% of the miles before the last day, when we had no wind and motored home. Overall ecomony was 0.45 GPH. Economy while motoring home 50 miles at cruising speed of 5.5 knots in neutral current was 0.70 GPH. That motor-only segment came out to 7.14 NMPG. Adding in the sailing miles my overall fuel economy was over 16 NMPG. Units are U.S. gallons (3.785 liters) and nautical miles. 

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Dubs2021 Members Profile Send Private Message Find Members Posts Add to Buddy List Lieutenant Commander Joined: 04 October 2021 Location: Edmonds, WA Status: Offline Points: 77	Post Options Post Reply Quote Dubs2021 Report Post Thanks(0) Quote Reply Topic: Fuel Economy Posted: 22 August 2023 at 18:32
	Little more detail on fuel consumption. Dubs is a 2021 Hanse 348 with a 2 blade folding prop. On our most recent 4-week, 300-mile cruise, I was able to sail 70% of the miles before the last day, when we had no wind and motored home. Overall ecomony was 0.45 GPH. Economy while motoring home 50 miles at cruising speed of 5.5 knots in neutral current was 0.70 GPH. That motor-only segment came out to 7.14 NMPG. Adding in the sailing miles my overall fuel economy was over 16 NMPG. Units are U.S. gallons (3.785 liters) and nautical miles.
	Hugh

boatman Members Profile Send Private Message Find Members Posts Add to Buddy List Commander Joined: 18 September 2022 Location: East US Status: Offline Points: 119	Post Options Post Reply Quote boatman Report Post Thanks(0) Quote Reply Posted: 25 August 2023 at 19:22
	Thanks for the numbers. I have had a Yanmar 29 HP (YM and GM) on 4 different boats over the past 20 years. All boats were between 33 and 38 ft, say about 15k lb. I have found that the above numbers are about what I get. If I run at close to WOT, say 3k rpm, you use closer to 1gph, at 2200, get about 0.5gph.



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