My only exposure was when I was working in Oil and Gas exploration off shore, but that was 24 years ago. the sparkies needed to be on the their toes, the voltages were from 36v dc through to 450 ac. I think they get stuff tacked on as they go?
Any ways here in WA I would hunt down the oilfield ships and semi subs, or even the platforms.
The job rotation is similar to most fly in fly out positions, when I was doing it was 2weeks on and 2weeks off, I think it may be 3 & 3 now?
It REALLY helps if you know someone in the industry!!!
At sea you would be a Marine Engineer specialising in electrical work. All marine engineers learn some electrical stuff but you need specialised training once the voltages get up to 120V (I think, from memory). You can probably do courses at TAFE or if you've got the time and cash, the Australian Maritime College in Tasmania - www.amc.edu.au
As well as courses, you also need to put in sea time and you'll need to find work on a ship for that.
Thanks for the help I think I will go for the oil & gas platform option, Going to start doing course eg. Instrumentation Cert 4, Hazardous Area, and HUET. Any more help in this field would be appreciated