Vessels using the G-91: Rhiannon-class Light Cruiser (6, later 9 in turrets), Miodóg-class Sloop, Grey Wolf class Torpedo Boat, Trádghaoth-class Mine Warfare Vessel, Cailleach-class Light Cruiser, Hjemland-class Sailing Vessel, Maighdean-class Missile Cruiser, Mark IV, planned as secondary artillery for the Maighdean-class Cruiser Proposal.
Developed from: Rusadir Steelworks RS-10 135mm Gun. Developed into: Rusadir Steelworks RS-16 135mm DP Gun.
Length: Barrel: 45 caliber lengths
Weight: Gun assembly: 1.8 tons, Total depending on mount type.
Breech: Vertical sliding wedge
Muzzle Velocity: 800 m/s
Range: around 20 km
Rate of fire: 15 shells per minute under ideal circumstances.
Shell: 25 kg
Ammunition: Training-Paint, High-Explosive, Armour Piercing, High Explosive Armour Piercing, VT-shells, Incendiary Ammunition, Star Shells.
Mark IV Turret
Calibre: 135 mm
Elevation: -5 to +50°
Traverse: ± 120°
Rate of fire: 11 rpm
Muzzle velocity: 890 km/h
Maximum Firing Range: 26km with normal ammunition, up to 150km with rocket-assisted projectiles
In Of Ships and Girls and Shipgirls, SDF-Navy Cruisers Rhiannon, Searc and Lodan Lir use these guns in the manifestation of bows and arrows, while Stilly uses them as handguns. Colour-coordinated for convinience, the fletching of those arrows indicates their use and shell-type:
- Red and black for Bodkin Arrows, armour-piercing shells.
- Blue for barbed broadheads, high-explosive shells, designed to rip deep and bleeding wounds.
- Brown for Rope-Cutters.
- Scarlet for flaming arrows, incendiary shells.
- Yellow for sounding arrows, star shells.
- Pink for boom-arrows, as they were called, for me VT-shells.