I’ve tried a work around on this for a game idea quite similar (you control the ship and fix broken things in it). My idea was to have the ship stationary and have the render-texture to represent everything outside the ship. The ship itself is a small actor that has said camera’s on it that feed back to the textures.
I know source can do this (portal walls make this very easy) and I have played a tech demo of UE3 doing the same thing, but have no idea how to set it up in UE4.