Originally Posted by DougSabbag
We had, (and have again), a fully electric boat.
B&G auto helm (used 12 amps whenever she flexed her muscle)
Marine Labs Water Maker (SERIOUS POWER DRAINER)
Splendide Washer / dryer powered through a 5000 watt inverter
Hot water tank
(2) 18,000 BTU A/C systems
Geez I thought I had the comforts of home aboard - by this standard my boat is bordering on primitive. Although I also have fridge, freezer, watermaker, and all the other fundamentals on the boat but I get away with 6 T105's in the main bank and just one start battery with a separate windlass battery. My daily consumption living on the hook is about 220Ah per 24 hours
I charge with 280w of solar array, a small windgen and a 180A big frame alt and the standard 90A alt on the donk.
But 2400Ah capacity? Wow. I'd have to lift my waterline.
Surely the new boat (if I understand correctly you're busy kitting out a new boat?) will have more electrically efficient gear on board. Watermakers and autopilots of today use just a fraction of the gear described above.