Titan used the sub when he went to observe a device that attracted the Gargon in a plot to destroy Stingray.
Titan and Sculpin entered the craft, which was piloted by some Aquaphibians, and traveled to the Kendrick Trench to deposit a beacon device that would attract the Gargon. Sculpin left the craft and placed the device on the B1 Bathyscape, causing the Gargon to attack it. The tables were turned when Troy Tempest took the device and dropped it on top of their craft instead, causing the Gargon to attack them. Titan and Sculpin were forced to wait until the power source on the beacon ran out before they could move the craft or even leave it.
- The model was most likely a rubber or plastic ball glued to a real scallop shell.