I was on the Belize Aggressor III in April and there was no unattended charging allowed below deck. We were allowed to charge only cell phones in the cabin while we were in it. They said if the steward (who went in twice per day) found anything plugged in while we were not in there, it would be unplugged, and if it happened again, we would have a conversation.
Everything else charged at anytime at the charging station on the dive deck, including overnight. I went and unplugged my dive light, computer and/or camera in the middle of the night several times. There was always power available, and there was no intention to cut power overnight... yet.
This was the first liveaboard that I had seen a dedicated charging table or any rules about charging. In other liveaboards that I went on, we all charged everything in our cabins, including below deck.
For that matter, this was the first time I saw a roving night watchperson on a liveaboard. I am a night owl and saw him each day from when he woke up around dinner time until I went to bed often between 1 and 3 AM. My roommate was an early riser and had coffee with him every morning around 4:00 to 5 AM. Between us and our LDS group of 18, we saw him making his rounds through the night all week.
So it looks like between April and November on the BAIII, the charging station is being de-powered overnight, and there may be "significant consequences" for unattended charging?
Confirmed. No overnight charging. Alex, the night watch, de-energized the table each night. Discussion with captain with the option of restricting diving privileges. No one ever gets that far, they get the point and a better understanding of the risks to the boat and passengers.