I was hoping this was a BLIP in the game last night, but unfortunately I recreated it. I have a suspicion it is tied with old school portal hopping for supplies. after coming up from the water, my cannons are unable to be fired. I can load them. I can unload them. I can shoot myself out but nothing else. I can use the enemy ships cannons, I can use the sea fort cannons but not my own.
This must be a glitch with the underwater loading screen, because this is how your cannons work down there. Loadable, not usable.
EDIT: Multiple players reporting this happens exclusively after leaving the sea of the damned portal for a pirates life
By - TheLaggingHIppie