One of my favorite genre is incremental management game and this game does is a great one. It's rare for this kind of genre in this game jam due to the theme. I can see the idea to be expanded further, looking at the description you do have more ideas for it.
Really like the casual and chill vibe of it, the music definitely contribute a lot there.
The refuel mechanics doesn't seems to add much to the gameplay. It's irrelevant most of the time, and when you need to refuel it's cheap and just need to press a button.
The game lags a bit when a bunch of divers deployed on the WebGL build on Chrome (performs better on Edge).