LÉ Róisín (P51)
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| History | |
|---|---|
 Ireland
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| Name: | LÉ Róisín |
| Namesake: | Róisín Dúbh, daughter of Red Hugh O’Neill |
| Builder: | Appledore Shipbuilders, North Devon |
| Commissioned: | 15 December 1999 |
| Homeport: | Haulbowline Naval Base |
| Identification: | P51 |
| Status: | in active service |
| General characteristics | |
| Class and type: | Róisín-class offshore patrol vessel |
| Displacement: | 1,500 tonnes Standard |
| Length: | 78.84 m (258.7 ft) overall |
| Beam: | 14.00 m (45.93 ft) |
| Draught: | 3.8 m (12 ft) |
| Installed power: | 10,000 kW (13,000 hp) |
| Propulsion: | Wartsilla medium speed diesels |
| Speed: | 42.6 km/h (23.0 kn) maximum |
| Range: | 11,000 km (6,000 nmi) |
| Boats & landing craft carried: |
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| Complement: | 44 (6 officers and 38 ratings) |
| Sensors and processing systems: |
kelvin Hughes radar |
| Armament: |
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| Aviation facilities: | None |
LÉ Róisín (P51) is the lead ship of her class of offshore patrol vessel in the Irish Naval Service. The ship's primary mission is fisheries protection, search and rescue, and maritime protection operations, including vessel boardings. Róisín or Róisín Dubh, is often used as an allegory for Ireland. However the original Róisín Dubh was a daughter of Red Hugh O’Neill, Earl of Tyrone in the late 16th Century.
The ship was designed by Vard Marine (formerly STX Canada Marine) and has an all-steel hull based on the Mauritian Vigilant patrol vessel launched in 1995, but without the helicopter deck and hangar facilities. The level of automation incorporated into the ship's systems allows the ship to be operated with just 47 crew including eight officers. The vessel is designed for winter North Atlantic operations.
The ship is armed with an OTO Melara 76 mm gun dual purpose gun installed on the bow gun deck. The gun fires 6 kg (13 lb) shells and is capable of firing up to 85 rounds per minute to a range of over 15 kilometres (9.3 mi). There are also two 12.7 mm machine guns and two 20 mm Rheinmetall Rh202 cannon for anti-aircraft defence.
The main gun is controlled by an Ultra Electronics Command and Control Systems, Radamec 1500 optronic director with a daylight TV camera, thermal imaging camera and eyesafe laser rangefinder. System 1500 functions in automatic or manual mode. The system provides fire control for surface engagement with spotting corrections in both line and range and has an effective secondary self-defence anti-air capability. System 1500 can detect a small patrol boat at ranges in excess of 12 kilometres (7.5 mi), night or day. The ship's Kelvin Hughes surface search radar, operating at E, F and I bands, is installed high on the main mast over the bridge. The Kelvin Hughes navigation radar operates at I-band.
The communications package includes VHF, HF, Inmarsat Global Maritime Distress Safety System (GMDSS) and Differential Global Positioning System (DFPS) and secure communications. Three inflatable boats are deployed from each ship; two 6.5-metre (21 ft) Delta rigid inflatable boats (RIB) launched with Caley davits, and a single Avon 5.4-metre (18 ft) RIB.
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