Early American space flights all landed in oceans, and the astronauts and their craft were plucked from the sea and brought home quickly in aircraft which flew from aircraft carriers.
Your task:
It would be very uncomfortable for astronauts if their spacecraft just rolled around in the ocean while they waited for rescue. Design a flotation device which would stabilise the rocket and also cause it to self-right when in water.
Test your design in a water bath in the lab and be prepared to describe how it works to the rest of the class.