Stingray

Stingray survives its encounter with moderate damage, necessitating major repairs. Growing increasingly frustrated that Titan is acquiring new allies and fearing that his own position is in jeopardy, X20 hatches a plan to finally impress Titan and regain some of the power he once had. X20 gets into Marineville, disguised, and finds out about a new replacement for Stingray being rushed through the final stages of development, codenamed Orca.

Unlike Stingray's role as a patrol and exploration craft, the Orca is a larger submarine designed purely for warfare. It is heavily armed and features a variety of innovative features that make it virtually unstoppable. However, thanks to the growing threat posed by Titan's alliance, the race to get Orca's sea-trials underway has inadvertently compromised the vessel's security. During test manoeuvres, the Orca is stolen, thanks to information gathered by X20. Troy and crew try to pursue in the hastily repaired Stingray, but are faced with Titan's alliance - an impossible foe!