Our boat is less than 2 years old and the system does tie in auto-shutdown features. There is a sight gauge. I can test the auto-shutdown features and read the guage. I am thinking that with all this, removing and weighing the tank, which is no small task, is overkill and would not add to my safety so I would only bother if the USCG required it.
To that point, the USCG regs get a little confusing. Some portions of the reg suggest that "rechargeable" systems need to be weighed annually, while other portions suggest that systems with visual pressure guages do not need to be weighed. And since I have more than three portable units, the basic requirement is satisfied by these and the fixed system is over and above the requirement.
So the question is, for either a USCGA courtesy inspection or an actual USCG stop, what happens if there is no inspection tag on the fixed system. Or can I tag it myself?