It is very unusual for "ships" to connect to shore supplies, partly because loads can be quite large, and secondly because it ends up being very dangerous. Smaller boats are a bit different, and often plastic, so may be considered a bit safer. In the UK we insist on TT supplies which should be OK, but one still finds the odd narrow boat plugged into a random mains supply. We cannot win them all.
IIRC a Type 22 frigate could put up to 3 MW ashore for disaster relief. I just took that as a given at the time - I never gave any thought to earthing arrangements.
It is very unusual for "ships" to connect to shore supplies, partly because loads can be quite large, and secondly because it ends up being very dangerous. Smaller boats are a bit different, and often plastic, so may be considered a bit safer. In the UK we insist on TT supplies which should be OK, but one still finds the odd narrow boat plugged into a random mains supply. We cannot win them all.
IIRC a Type 22 frigate could put up to 3 MW ashore for disaster relief. I just took that as a given at the time - I never gave any thought to earthing arrangements.
