seaQuest DSV (1993)

S01E14 Nothing but the Truth

As the crew readies for a crucial experiment, they evacuate the seaQuest, leaving Commander Ford, Lt. Commander Hitchcock, Lieutenant Krieg, Chief Crocker, and Lucas behind. Seizing the opportunity, a group of environmental extremists takes advantage of the seaQuest's unguarded condition and commandeers the vessel. With tensions rising, the remaining crew must confront the intruders and regain control of their submarine.