Back when I was a GUDE/WIPER
Had a captain on a car carrier I was on that loved using the PA for everything, including screaming at the crew at 3am for a radio that wasn’t returned and he would keep talking until it was returned and making stupid noises on the PA.
Turned out said radio was in use by the AB on Gangway watch.
Another was during my Apprentice days up on the Lakes, there was a Captain whom was rarely ever seen outside of his cabin except for the days he liked to grab the chief and take over controls in the E/R to bring the ship off course, Captain said he liked to make sure the brid- sorry ‘wheelhouse’ watch was paying attention.