Nice shader! Reminds me of mine :P looks like we had a similar idea, that’s so nice! I also like the repair mechanic, it adds a bit of flavour and variation to the whole adventure. Controlling the submarine from a little window gets a bit uncomfortable at times but I think you handled it well - maybe in a future build (if you expand it) you could lock the camera to the screen at a more generous angle. All in all an inspired entry, I liked the space horror element!