Planet (The Super Sub)

On one planet, the Daleks tested the prototype of their Dalesub, which crashed on the ocean floor, killing the crew.

A thousand years later, Jeff Stone, Steve and Robin explored the ocean of the planet in the Bathylab 3 in search of mineral ores, but instead discovered the Dalesub. Using their water extractor, they were able to pump the water out of the downed sub, thus facilitating repairs. Soon, they had the Dalesub working again, and were almost immediately engaged in a battle against an approaching Dalek patrol. The Dalesub easily dispatched the Daleks, and its human crew celebrated. (COMIC: The Super Sub)