Not bad but please study a little before you start to make a game in a theme. Submarines use sonar rather than a radar. Neither of these can serve you with the data that this game shows on the radar. Oxygen bottles cannot be... I don't want to be a spoiler but they just can't. Rocks better avoided than tried to get them out of your way.
So to solve the puzzles, player must think of escape game clichés and forget about real-life knowledge. About clichés, has anybody ever played a point and click without lamp and battery in it?
I enjoyed the game. Nice art. The radar passcode is easy, there actually _was_ a clue others may have not noticed.