This was an idea loosely inspired by a Sci-fi movie that I will not name here. But the relevant part is that it involves an interstellar colony ship landing on a planet and the crew learning that the ship had been submerged in an ocean.
Now there is something that kind of bugged me at the time of seeing it, that I thought would be a rather interesting set piece that I myself would like to work with. To illustrate this, here is a rough cross-section of a spin gravity spaceship in space.
Now, this set up works because the only gravity is generated by the spin of the ship. Up and down are meaningless terms in space but the passengers need some way to orient themselves, so down is always towards the floor and outside the ship while up is always towards the center of the ship. Now here is the cross-section of the ship when it is submerged.
This changes things because now there is a definite down that no longer corresponds to the floor. The bottom of the ship would be unaffected the top of the ship would be completely upside-down while the sides would be...well on their sides. Where once there was a gently sloping hallway now it’s a really long curved shaft going up and an equally deep pit going down. Which personally I find much more interesting topography than what we got in the film where the deck plan was always nice and flat. Poseidon adventure on steroids. But this new orientation of the ship creates a rather interesting problem that I admittedly can’t think through. How on (insert planet name or designation here) can you get around?
So here is the riddle: How can human adventurers navigate and maneuver around a submerged spin gravity ship to salvage from it?
Edit: I have decided to pivot the original hard science tag with the more accurate science-based tag which doesn't require the strenuous citations. As was pointed out this question is harder to come up with hard science answer to, and I really don't want any of your wonderful comments to be deleted because you didn't include equations that I can't make head nor tail of. Thank you for enjoying this post.