Main Question: How would a pirate ship that is able to submerge down to the deck work?
Additional information: The ship would ideally be made of wood, but it would be fine to make it out of metal. The idea behind this submersion is to dodge enemy cannon fire while still being able to fire on them. The ship already has a series of "harpoon cannons" inspired by Sea of Thieves that allow it to bank around enemy ships quickly. It also has ten cannons, two on each side below deck and three on each side above deck. The cannons are placed on tracks that have locking mechanisms to keep them from shifting. Any help or commentary on all aspects of the ship would also be appreciated.