The emergency generator for all vessels is typically tiny compared to the standard generators (of which you have multiple, maybe 4 on this ship).
It's basically just there to keep the emergency lights on and any other equipment you need to work to get everything else back up and running.
Esky? In NZ it's a chilly bin.
Glad you got it sorted, and thanks for sharing the solution. I might see if I can remove privileged from mine in that case.
I'm on x86, but the below relevant lines have mine working:
--privileged
--group-add keep-groups
--device /dev/ttyUSB0:/dev/ttyUSB0
I also had to add my user that runs the container to group "dialout" as that owns the ttyUSB0 device. Keep in mind to log out and back in with this user after adding the group to apply the change.
Hope that helps!
I'm not against it but I upvoted you because I think you have a fair position and expressed it honestly and in a completely reasonable way.