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that's not politics, its science.

Personally, I think worrying about how much diesel a sailing boat burns is a nonsense. Quoting Aa's example as a good example of relativity. I'm constantly reading boat reviews in the magazines about launches, fizz boats what not. The amount of diesel or petrol those things burn is eye-watering. Just reading about the latest fishing boat, innovative design and what not, they recon it is fantastic fuel economy burning 2.65l per nautical mile. It is designed for day trips and has a 550l fuel tank. You can upgrade that to an 800l fuel tank!?!?! If you are going electric drive purely for

This is supposed to be a sailing forum and all you discuss is motors of various types... /Martin

Meh Kick out the ICE diesel and go gas turbine on your genset. A bitch to start, but very efficient at fixed rpm, run on any liquid fuel, and that pleasing jet engine howl to leave them all scratching their heads. And you can cook over the exhaust.

not a canter

Hell, the 2qm20 in SO is now 50 years old. It's done about 70 hours a year for the past 4 years, so probably about 3500 hours in its lifetime. It uses around 3 litres an hour at cruise revs, so close to 10,000 litres in its lifetime. That's about a 10 tonnes of diesel. Which generates about 26 tonnes of CO2 or half a tonne per year. SO was bought because we couldn't fly to Japan for ski trips during COVID. Those flights were about 22 hours return. A passenger generates around 90kg of CO2 emissions per hour when flying. For two people our flight would have generated almost four t

LTO cells have 30000 cycles. LFP cells have conservatively 3000 cycles. Most now have 7000 cycles. Assume you are in a marina, you charge your batteries every week and you motor your full battery capacity (call it a conservative 15Nm) every weekend on a 3000 cycle battery bank... That's 57 years of weekend usage. They are going to outlast the boat. You run the generator occasionally cause you picked a light wind weather window and you are on a tight schedule. After 4.5 years I have put 225hrs on the engine. The most use it gets is making a deadline cause theirs

For me the main purpose of going electric is to not have an ice engine. I'm happy to go a bit slower and 60 NM is plenty of range. Recharging off grid is an issue, but the technology continues to improve.

I tend to just have a quick peek in the mirror, my handicaps are immediately evident