Fallout 3 Game Add-Ons (DLC) Hints

Confirm Submarine Self-Destruct by activating the Failsafe Lever.

  • 1 of 2: Look around for any items you want to take, then head to the SE end of the sub.
  • 2 of 2: Use the self-destruct switch that's above the green radioactive goo and confirm the self-destruct order.