Mórrígan-class battleship

Class overview
Name:	Mórrígan-class
Operators:	Royal Ossorian Navy
Preceded by:	Lugh-class
Succeeded by:	Scáthach-class
Built:	1972 - 1990
In commission:	1980 - Present
Planned:	6
Completed:	6
Active:	5
Laid up:	1
Retired:	1
General characteristics
Type:	Guided-missile battleship
Length:	243 meters
Beam:	28 meters
Draught:	9 meters
Propulsion:	As built 2 × nuclear reactors 4 × steam turbines 4 × screws Refit 2 × LFTRs 4 × steam turbines 4 × screws
Speed:	+30 kts
Range:	Unlimited
Complement:	800
Sensors and processing systems:	air search radar surface search radar fire control search radar Hull-mounted sonar
Electronic warfare & decoys:	ECM suite Decoy launch system Torpedo decoys
Armament:	As built 4 × 115 mm/55 calibre guns (2×2) 8 × Tabhall CIWS 3 x twin-arm missile launchers 16 × AShM canisters Refit 4 × 115 mm/55 calibre guns (2×2) 8 × Tabhall CIWS 192 x VLS cells 16 × AShM canisters
Armor:	Double-spaced armor 70 mm Kevlar
Aircraft carried:	1 × helicopter 5 × UAVs

The Mórrígan-class battleship is a class of guided-missile battleships, built for and serving with the Royal Ossorian Navy (RON) starting in 1994. The class was the first class of guided-missile battleship built by the RON and the first Ossorian battleship class to eliminate the large-caliber gun as its primary armament.

Design

General characteristics

The Mórrígan-class ships have an overall length of 243 m, a beam of 28 m, and a draught of 9 m. Each of the class' four steam turbines drive a single 5-bladed Variable-pitch propellers and are powered by a pair of LFTRs and are rated at 198,000 shaft horsepower. This gives ships of the class a reported speed in excess of 30 knots.

Sensors

The Mórrígan-class ships were equipped with the Ráth Combat System, which consisted of the Type 30 air search radar, the Type 31 surface search radar, and the Type 32 fire control radar. The ships are also equipped with a hull-mounted sonar system.

Armament

• Two 115 mm/55 calibre guns for use against surface, airborne, and shore targets, mounted one fore and one aft.
• Eight 30 mm close-in weapon systems for use against close-in surface and airborne targets, mounted around the superstructure.
• Three twin-armed guided missile launchers capable of launching a variety of surface-to-air missiles, surface-to-surface missiles, and anti-submarine missiles with sub-deck magazines capable of carrying 64 missiles each. Removed and replaced in a refit during the 1990s.
  • Refit: Two batteries of vertical missile launchers totaling 192 cells capable of launching a variety of surface-to-air missiles, surface-to-surface missiles, and anti-submarine missiles for use against standoff-range airborne, surface, and subsurface targets, with one battery of 128 cells mounted on the foredeck and a second battery of 64 cells mounted on the afterdeck.
• Two quad-canister anti-ship missile launchers for use against standoff-range surface targets, mounted aft of the superstructure and trained outward of either beam.

Aviation

The Mórrígan-class ships are outfitted with a helicopter hangar and a flight deck on the stern and are capable of operating two helicopters. The ships are additionally outfitted with the launch and retrieval system for a set of five reconnaissance UAVs.

Ships

Ship	Namesake	Builder	Laid down	Launched	Commissioned	Fate
Mórrígan	Goddess of Warfare	HRM Dockyard, Gabhrán	1972	1975	1976	Decommissioned in December 2021
Niamh	Goddess of the Dawn	HRM Dockyard, Gabhrán	1975	1978	1979	Scheduled to be replaced by LB Aífe
Lugh	God of Light	HRM Dockyard, Gabhrán	1978	1981	1982	Scheduled to be replaced by LB Mórrígan
Nuada Airgetlám	God of Oceans	HRM Dockyard, Gabhrán	1981	1984	1985	Scheduled to be replaced by LB Étaín
Áengus	God of Strength	HRM Dockyard, Gabhrán	1984	1987	1988	Scheduled to be replaced by LB Niamh
Taranis	God of Storms	HRM Dockyard, Gabhrán	1987	1990	1991	Scheduled to be replaced by LB Anu