Goboatingnow
Solar Enthusiast
- Joined
- Jul 3, 2022
- Messages
- 1,325
I would suggest 20-30 metres of thruster compatible cabling is going to be a hell of lot cheaper then your proposed battery system. More reliable and easy to maintain
be careful looking at other peoples installs. Lithium Practice , equipment selection and standards are evolving. Also so is general knowledge. Many existing installs are now outdated , potentially borderline safe and use out of date concepts.I'm not sure you recognize the scale of what you are proposing, or that you've done any math. The 100kWh battery you propose will take 20 hours to charge with your generator. Usually people size a generator to charge a bank in an hour or so.
You are not the only person with a 70 ft. cat. And most are in the tropics. I seriously doubt even a single one has the battery and A/C load you propose.
Maybe bounce over to cruisersforum.com where others with a similar sized boat can offer solutions. I spent several years in the tropics on a boat, fwiw. Your time and money will probably be better spent on good insulation and window shades. A shade tent outside can counter the effects of a dark hull. Might be hard on a cat but many monos use them. 3 tons of AC will handle 2000 sf. That would be more than plenty for your 1000 sf in the tropics, especially if you close off unoccupied areas.
Anyway, at cruisersforum you will probably find help from others that have a similar boat and already engineered a working system.