Thanks for trying to play it! I don't know if you're still interested, but the submarine controls are toggles, not tap buttons.
I'm still interested! I could play the game properly after reading some comments and realised I was stuck on a wall. Wow! This game is really great! I knew it! When I got to the second log the game bugged and everything was updating automatically, so I didn't need to stop, scan, clear and rotate anymore and could move freely (like a normal top-down game) but it made me realise that the way you designed it is essential. Re-rated. Great game!