airlocks

[Nightarix]

seemingly pointless without the implementation of air but may give a way to access turrets, the idea is to have a pair of doors(doors facing each other within a certain distance, like 2 empty blocks between them) "lock"(open outward) to create a bridge between the two ships, as i said before it's only pointless if you think of it's primary function of keeping air inside of a ship, and in theory could allow people to access docked vessels(haven't thought as far as how to go through them if their on top of the ship while gravitys turned on for one or both ships)
edit: just realised that a solution to the going up problem already existed, to quote a mildly entertaining movie "up is down".