The Submersible Mining Environment, nicknamed Fast Hand by Lando Calrissian, was exclusively designed for mining Corusca gems in the deepest reaches of the planet Yavin's lower atmosphere. It had a resemblance akin to a huge diving bell. Fast Hand was equipped with a pair of trolling cables that could be used to retrieve Corusca gems. After a gem was captured, it would end up in an access port located in the floor of Fast Hand's cockpit.