Why have an AC Genset? (versus DC)

[neelie]

I have tried a search on this subject and came up with nothing - so here goes.

Can someone explain to me why I should keep my 630 lb, 9kW 110VAC genset?

Would I not be better off installing large (c. 150A) alternators on each engine and then ditching the genset in favor of added battery capacity and solar panels?

Or replace the AC genset with a light weight DC genset with a PTO for a watermaker pump?

I dont see the AC advantage - have I missed something fundamental?

My only big draw AC devices are air conditioners and the water maker. The former will only be used at a marina and the latter can be converted. I have no idea why a massive 9kW genset was originally specified and installed in the first instance.