1. The doors can be opened manually, however they will have to be pushed open or broken through. Characters can access the door control panels, but there isn't anything they can do to get them to open that way without power. The doors are just slabs of metal and will need to be pried open.

2. Characters are welcome to create rudimentary technology if they have the tools, the materials, and the power sources. They will not be able to siphon power from the fleet or in any way use the fleet's power generators.