The weight for my boat is irrelevant really. The basis of the electrical
install is the heart of the boat. It is a for living on and cruising on a daily basis. The fact that it provides motive power is simply a bonus.
I know other people in the marina with the big diesel engines that well honestly self confessed would never dream of starting their diesel engines even to charge batteries. They stay locked to the dock
attached to their big extension cords and that is where they sit for most of the year. If they are lucky they get out to the ocean once a year and even then most have to budget
their time away.
I know every weight right down to the last pound on my boat and when I say the weight for me is not an issue at this point. For example:
6 lbs each with backing 10 lbs each all 12 for 120lbs. So that is some pretty reliable light weight energy production right there.
Panels 120 lbs
Motors 144 lbs
Batteries 535 lbs
Generators 250 lbs
So that is 1250 lbs. But hey lets add in the electric incinerating toilet, the washing
machine the induction cooktops the two dehumidifiers, the fridge, the radar
, the chartplotters, laptops, the two battery chargers, the two heaters, the tools, the two hot water tanks
. Don't forget the food
- it was all in the boat on the travel lift
when we got the weight 5400 lbs and then we cheered.
The diesel cruisers still struggle with basic electrical concepts and try and run all their gear
on 12v heart interface stuff from the eighties. My boat sailed from England
to arrive in Canada
many years ago but honestly if you remove the weight of all that sailing gear
your much better off. Most of it is not light and when removed the boat is probably 500 to 1000 lbs lighter so that is the comparison. The boat is easier to operate and your still harnessing mother nature but in a more efficient and economical way. If I wanted to harness wind
I have that option in the form of a wind generator
but I digress.
All I know is that people are genuinely impressed with the boat and not a day went by when people would stop and chat and ask how we did it and what we used. Most are so confused by the options and the fud that they have no idea where to begin. They are locked either into sail rigs or diesel rigs and at great expense and the likely hood
of them ever making it off the dry dock
or marina is well at times laughable.
We spent 4 months on the hard
outfitting. We moved aboard the same day and had power up and running and never looked back. When the marina yard manager of 30 years said it was time for us to go in the water
we had to agree with him - even he knew we were ready. More so the big diesel boats we were camped beside honestly didn't ever have a chance - their dreams will die a rusting useless scrap of metal locked in by their poor choices.
So far as motoring is concerned should I choose to run both my generators and apply current
to the outboards I could run for as long and hard as I wanted to pushing a cool 50 amps per motor doing five or six knots into the wind
Otherwise for those contemplating small banks being driven by AC generators that could be trouble. Get the biggest lithium bank you can find. Minimum 20 kw/h and then spec your small generator DC feeding two banks. Invert power from there one for house one for propulsion
if you like or make one big bank it really doesn't matter with lithium.