Coincidentally, I was watching a youtube video about a luxury superyacht, as I have been boating for over 60 years and love to follow the newest trends, even though I have no chance of owning such a boat.
Anyway, we all know that swimming pools and marinas are special cases for electrical installation, but what do manufacturers do about on-board systems where they have 12 or 24 Volt circuits, and shore-power too?
Well, the DC systems are easy, and haven't changed a huge amount, except monitoring and charging are much more sophisticated. However, the AC installations are completely amazing (to me, anyway). We have multiple incoming cables, some on auto-recovering spring loaded reels) and a bank of inverters, chargers, a couple of big generators (big for boats that is) and all controlled by an automated system which, when you plug in to shore power anywhere in the world, the system detects the voltage and whether it's 50 or 60 hertz or whatever, and converts the input to exactly what the boat requires.
The actual installation on some of these super-yachts is as clinical and neat as anything you could imagine, everything is labelled every metre or so, and the whole installation is connected to a massive display that tells you everything that's happening...and the staus of the current configuration and the status of the 2 backup systems.
I am fortunate to know an electrician who works for a major manufacturer of such boats, so I asked him how much it costs to install the full electrics on a 75' yacht with twin engines, radar, AIS, 12 and 24V plus shorepower plus inverters and chargers and generators, and all the other systems demanded by owners. His reply, excluding the actual cost of the "appliances" (radar, AIS, Satnav, satphone, sat-tv. water makers, etc) so, basically the infrastructure...
£300k...seems a lot, but when the boat costs £5m that seems like a reasonable amount.
My dream job?
Maintaining these beautifully installed systems which need virtually no maintenance, but polishing everything 'til it gleams...and if something breaks, fitting the latest replacement unit regardless of cost!
Dream on, Pirate!