The fundamental idea is solid and fits the theme really well. The controls were a bit difficult (but I have a nonstandard keyboard, wasd+space bar would probably appeal to more people though.) Figuring out the pattern and the ideal offset between you and the enemy ship was interesting though, there's a lot of room for interesting patterns there in addition to orbits.
The story at the start was a great hook. Pressing S immediately took me to the win screen regardless of if I had water. The "dragging blocks across" mechanic was actually really cool, I'd like to see that expanded.
