Jen-in-Wellies

Intersting article thanks for posting the link.

It did not. The charger on my boat is part of an old Victron combi. The cooling fan will come on if the inverter is under a heavy load, but not the charger.

This was the cause the last time I unexpectedly ran out of shore line credit. A cell in one of my batts had shorted out. The rotten eggs smell (Hydrogen Sulphide) was another clue. Needs checking out in person as batteries in such a condition can explode, drenching the area with hot acid.

If you didn't have any air vents then the whole stern of your boat might do this when the engine is run! Especially a risk if you have an aluminium Sea Otter 😃

Unplug the shore lead from your boat. Still debiting your units? It's a problem with the marina's post. Not impossible that there is a fault there. Otherwise, something on your boat is using a lot, or someone is plugging their boat in to your lead while you are away!

No.

Cheaper to move the tidsl lock to the west side of the bridge and deepen the cut underneath. Good luck @noddyboater tomorrow morning, which I am guessing is now this morning.