"Brian Whatcott" wrote
What is it that you don't understand?
See code of practice for first
drop at domestic distribution transformer.....

I understand that ground and neutral are connected to a common bus at the
service entrance. Are you saying the OP's problem may be that ground and
neutral are connected at his shore power connection? That would just be
plain wrong. I'm not trying to be confrontational, just trying to understand
what you're getting at.