Has anyone converted to electric engine?
OceanVolt https://oceanvolt.com/solutions/systems/
Fischer Panda https://fischerpanda.com/electric-propulsion/
If you did what manufacturer and what is your cruise speed?

Not applicable for planing speeds.
I did some calculations on my 32OF. And replacing engine and fuel weight with electrical installation and batteries of the same weight, would give me barely 10 miles of range in 23 knots....

I was thinking of adding a diesel generator to run ship power and charge the battery bank to get the range. I'm worried about not having enough space.

STEYR motors, made in Austria, have a combination of integrated generator in the flywheel in the engine for higher effect than the ordinary generator.

3 hours in 5 knots for this converted Albin 25.
https://www.hamnen.se/artiklar/motor/albin-25-nissan-leaf-sant/

1.7 knots from this 1500 w trolling motor on my 32of....

It is possible to electrify a coronet to travel at 4-6 knots for an hour or so. Longer becomes too heavy. 2 *100 kwh tesla batteries would last approx 40 mins in a 32 of at 25 knots....

This looks like the answer, but it will cost more then the boat!
https://www.torqeedo.com/us/en-us/products/hybrid-drives

2x100kwh batteries will also weigh about 1300kg.

And consider where to charge the boat. If you are really lucky on Swedish west coast you can get 10A 230v. But in many places it is limited to 3A.
With 10A charging time for a 32OF would be at least 3 days...

Question for me is what are the benefits with electric?

I think that this solution is interesting.

https://www.mby.com/gear/water-jet-electric-boats-sealence-deepspeed-112477

I love your idea Emerich!
I am working on the exact same proposition. My beeds are 2 hour range at full speed or 4 h at 6-8 knots. that would be sufficient for the Swedish archipelago. For charging I am looking in to a fule cell or diesel option . Would love to stay in touch!