Electric Cruiser

I love the boat, though it doesn't have much utility besides speed. I saw one for sale, nicely maintained, for as little as $20K a few months ago. Mostly, though, they sell in the ~$40K range. And then your conversion starts...

 

I am sorry! I misinterpreted gonzos genuine interest in where he could get hold of such equipment.
I am driving a Tesla Model S since more than 5 years now. I bought it in used condition and as far as I can make out the deteriation of the battery is minimal. I am not driving all that loong but to my surprice I just passed 160 000 km (99 419 mile).
When searching model 3 battery they often come from cars that was in some other accident and might only have 10 000 miles on them.

I think that both the original author to this post and I are willing to spend more just for the pleasure of ”driving” electric. I guess it is like growing your own potatoes. It’s not economical but it gratifying. I haven’t even started to build my boat yet and that will take at least 5 000 hours.

 

I think that you may have the budget to get the pleasure of driving electric. The OP says he is on a tight budget, so a used or refurbished diesel is a more economic choice. I have a lot of hobbies that give me a lot of pleasure, but none make a profit. At this point, fossil fuels are still too cheap.

 

Well, "tight budget" is somewhat subjective, but yes, I don't have a couple hundred grand to throw around on buying a new boat and converting it to electric with all new electric components.

 

The Tesla 3 is advertised at a maximum of 450 HP. The range is about 250 miles at highway speeds. On a marine application, you should calculate what power the car consumes at around 120 mph going uphill to use a comparable power usage. The battery pack will probably run less than an hour. It doesn't seem like a practical setup for a long range cruising boat. The advertised range is with new batteries too.

 

late reply but Tesla model 3 Long Range battery is 72.5 kWh km (usable). it is likely somewhat optimistic but gives the ballpark. 30hp motor will run between 2-3 hours until flat.
70kWh is decent amount if energy, takes fair amount of time to charge with anything but a fast charger (not in marinas).

 

Not only Silent Yachts, but also Alva Yachts, a german company. These catamarans have like 10 &20 kw solar capacity. Gen sets, and even kite sails available.