Just gave it a try. Nice layout and design. The main thing that stood out is the power system. It has a few flaws. Here:
The engine, when cranked up, causes a massive load spike of +2500. The static load from the rest of the sub is a little over 1000. The engine more than doubles the total power load. This is bad, causing these problems:
1. When you first rev up the engines, the ship is starved for power until the reactor heats up for the increased load.
2. If you are running the engines at full power, then drop it to 0% thrust, the load tanks. This quickly toasts the junction boxes, and starts fires.
This can be fixed by either increasing static ship load, or putting batteries between the reactor and the ship grid. Batteries would be a good idea anyway.
Other things that caught my eye:
- Put O2 in diving suits, or at least put enough tanks in the nearby cabinet to fill all of them
- Nowhere to charge battery cells
- Put wires in cabinets so engineers can fix boxes and wire things
- There is a fabricator but nothing to put in it. Add some materials such as steel, poly carbonate, etc.
- Add more welding tools and cutters. May not be enough for a bigger crew, and people may lose some.
- Junction box in airlock/ballast area. Exposure to water damages them.
- Captain could use more ship access, at least to reactor room.
- In the airlock, the same button opens the hatch and toggles the docking port. This means that opening the hatch will also jettison any docked shuttles. Move docking port to a separate button.
- Could use a few more battery cells. Only seems to have the bare minimum for the supplied equipment, if that.
- Maybe tune navigation terminal to recommended neutral ballast setting
- Only railgun controller is in command. With this, the captain will have to multi-task between driving and shooting, or they'll need to let the crew into the bridge.
- Since the railgun cannot be swiveled, a few more shells or another gun would be nice. With 1 rigid gun, the ship is a bit weak in firepower.
- When airlock is open, it cuts off safe access to diving, ballasts, and cabin.