Gaisgeil-class submarine

The Gaisgeil (English: Gallant)-class submarine is a type of nuclear-powered and  submarine produced in the 1980s-90s by Faneria. It was constructed by Sae Breach Lahan, and was the first strategic attack and retaliation submarine fielded by Faneria. It was the only class of nuclear deterrence submarine in service with the Army Naval Service until the introduction of the Gainful class, and six of the fourteen hulls remain in service, to be stood down from nuclear duty as the Charcarodon class, a jointly produced Fhainnin-Pelaxian project, enter active duty starting in 2035.

Armament and performance
The Gallants' munitions, consisting of both short-range ballistic and cruise missiles, require different chambering for proper deployment. In most navies, this means vertical launch cells are dedicated either to ballistic or cruise weapons or these types of weapon are class-segregated; on the Gallants, Fhainnin engineers pioneered a casing system for cruise warheads which fit the standard SRBM tubes. These munitions, which are only used on the Gallants and their successor classes, use an initial cold-launch stage after which the ballistic casing bursts away and the cruise missile initiates. The develoment of these also informed the development of the first native cold-launch SRBMs, which were first deployed on the Gallants as well.