Ruairí Ó Síoda-class destroyer
| Class overview | |
|---|---|
| Name: | Ruairí Ó Síoda-class |
| Operators: |
 Royal Ossorian Navy |
| Built: | 1986 - 1999 |
| In commission: | 1989 - Present |
| Planned: | 27 |
| Completed: | 27 |
| Active: | 27 |
| General characteristics | |
| Type: | Guided-missile destroyer |
| Displacement: | 4,550 t standard |
| Length: | 151 meters |
| Beam: | 17.4 meters |
| Draught: | 5.2 meters |
| Propulsion: | |
| Speed: | +30 kts |
| Range: | Unlimited |
| Complement: | 165 |
| Sensors and processing systems: |
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| Electronic warfare & decoys: |
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| Armament: |
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| Armor: |
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| Aircraft carried: |
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The Ruairí Ó Síoda-class destroyer is a class of destroyers, built for and serving with the Royal Ossorian Navy (RON) starting in 1989. The class was the fourth class of guided-missile destroyers built by the RON and the first Ossorian destroyer class to be outfitted with a vertical launch system.
Design
General characteristics
The Ruairí Ó Síoda-class ships have an overall length of 151 m, a beam of 17.4 m, and a draught of 5.2 m. They displace approximately 4,550 t at standard load. Each of the class' two steam turbines drive a single 5-bladed Variable-pitch propellers and are powered by a single CS-2 LFTR and are rated at 60,000 shaft horsepower. This gives ships of the class a reported speed of approximately 30 knots.
Sensors
The Ruairí Ó Síoda-class ships were equipped with the Ráth Combat System, which consisted of the Type 30-CS-T air search radar, the Type 31-CF-T surface search radar, and the Type 32-CA-T fire control radar. The ships are also equipped with a hull-mounted sonar system and a towed sonar array.
Armament
- One 115 mm/55 calibre gun for use against surface, airborne, and shore targets, mounted forward.
- Two 30 mm autocannons for use against close-in surface targets, mounted amidships on either beam in single mounts.
- Four 12.7 mm machine guns for use against close-in surface targets, mounted fore and aft of the superstructure on either beam in single mounts.
- Two 30 mm close-in weapon systems for use against close-in surface and airborne targets, mounted fore and aft of the superstructure.
- Two 16-cell vertical launch systems capable of launching surface-to-air missiles and anti-submarine missiles for use against standoff-range airborne and subsurface targets, mounted fore and aft of the superstructure.
- Two quad-canister anti-ship missile launchers for use against standoff-range surface targets, mounted amidships between the forward and aft superstructures and trained outward of either beam.
- Two triple torpedo tubes for use against close-in subsurface targets, mounted amidships on either beam.
Aviation
The Ruairí Ó Síoda-class ships are outfitted with a helicopter hangar and a flight deck on the stern and are capable of operating a single helicopter. The ships were later refitted to include the launch and retrieval system for a set of five reconnaissance UAVs.