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HTMS Chakri Naruebet

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A small aircraft carrier with an upturned bow underway in calm seas. The number "911" is painted on the side, and an AV-8S aircraft and S-70 helicopter are sitting on the flight deck.
HTMS Chakri Naruebet underway in the South China Sea in early 2001
History
Thailand
NameHTMS Chakri Naruebet
Namesake"In honour of the Chakri Dynasty"
Ordered27 March 1992
BuilderBazán, Ferrol, Spain
CostUS$336 million
Laid down12 July 1994
Launched20 January 1996
Commissioned27 March 1997
HomeportSattahip
MottoOccupy The Sky, Occupy The Sea, Chakri Naruebet. (ครองเวหา ครองนที จักรีนฤเบศร)
StatusOperational as of 2010
Badge
Ship's logo
Ship's logo
General characteristics
TypeV/STOL carrier
Displacement11,486 tons full load
Lengthlist error: <br /> list (help)
182.65 metres (599.2 ft) (overall)
174.1 metres (571 ft) (flight deck)
164.1 metres (538 ft) (between perpendiculars)
Beamlist error: <br /> list (help)
22.5 metres (74 ft) (waterline)
30.5 metres (100 ft) maximum
Draught6.12 metres (20.1 ft)
Propulsionlist error: <br /> list (help)
2 x GE LM2500 gas turbines providing 22,125 shaft horsepower (16,499 kW)
2 x Bazán-MTU 16V1163 TB83 diesel engines providing 5,600 brake horsepower (4,200 kW)
2 x shafts with 5-bladed propellers
Speedlist error: <br /> list (help)
25.5 knots (47.2 km/h) (maximum)
17.2 knots (31.9 km/h) (cruising)
Rangelist error: <br /> list (help)
10,000 nautical miles (19,000 km) at 12 knots (22 km/h)
7,150 nautical miles (13,240 km) at 16.5 knots (30.6 km/h)
TroopsUp to 675 soldiers
Complementlist error: <br /> list (help)
62 officers
393 sailors
146 aircrew
Sensors and
processing systems
list error: <br /> list (help)
Hughes SPS-52C air search radar, E/F band
2 x Kelvin-Hughes 1007 navigational radars
Electronic warfare
& decoys
list error: <br /> list (help)
Decoys:
4 x SBROC decoy launchers
SLQ-32 towed decoy
Armamentlist error: <br /> list (help)
2 x 0.5-inch (13 mm) machine guns
3 x dual Mistral surface-to-air missile launchers
Aircraft carriedlist error: <br /> list (help)
6-8 AV-8S Matadors
4-6 S-70B Seahawks
Up to 14 additional helicopters when required
Aviation facilitieslist error: <br /> list (help)
174.6-by-27.5-metre (573 by 90 ft) flight deck
12° ski-jump
Hangar space for 10 aircraft
Noteslist error: <br /> list (help)
Equipment fitted for but not with is listed in the article
Taken from:[1][2]

HTMS Chakri Naruebet (Thai จักรีนฤเบศร, meaning "In honour of the Chakri Dynasty")[1] is the flagship of the Royal Thai Navy (RTN), and Thailand's first and only aircraft carrier. Based on the Spanish Navy aircraft carrier Principe de Asturias and constructed by Spanish shipbuilder Bazán, Chakri Naruebet was ordered in 1992, launched in 1996, and commissioned into the RTN in 1997.

The carrier is equipped with an airgroup of helicopters and V/STOL aircrafts, and was intended for patrols and force projection in Thai waters, disaster relief, and amphibious warfare support. However, a lack of funding brought on by the 1997 Asian Financial Crisis means that the carrier has spent much of her career docked at the Sattahip naval base. In 2004, she was assigned with disaster relief missions in the Indian Ocean tsunami in Phuket and nearby islands.[3]

Design

When Typhoon Gay hit Thailand in 1989, the Royal Thai Navy, as the main unit responsible for search and rescue missions found that its ships and aircraft were unable to withstand the rough weather at sea.[citation needed] Moreover, the Royal Thai Navy needed a new, high-technology ship to modernize its fleet.[citation needed]

The original plan was to acquire a 7,800 ton vessel from Bremer Vulcan, but the Thai government cancelled the contract on 22 July 1991.[2] A new contract for a larger warship to be constructed at Bazán's shipyard in Ferrol, Spain, and was signed by the Thai and Spanish governments on 27 March 1992.[2] The proposed vessel was based on the design of the Spanish Navy aircraft carrier Principe de Asturias, which in turn was based on the United States Navy's Sea Control Ship concept.[4][5]

Chakri Naruebet displaces 11,486 tons at full load.[1] The carrier is 164.1 metres (538 ft) long between perpendiculars, and 182.65 metres (599.2 ft) overall.[1] She is 22.5 metres (74 ft) wide at the waterline, with a maximum beam of 30.5 metres (100 ft), and a draught of 6.12 metres (20.1 ft).[1] The warship has a ship's company of 62 officers, 393 sailors, and 146 aircrew.[1] Up to 675 personnel can be transported; commonly soldiers of the Royal Thai Marine Corps.[1][6]

Propelled by a combined diesel or gas (CODOG) system.[1] Each of the two, five-bladed propellers is connected to a Bazán-MTU 16V1163 TB83 diesel engine (providing 5,600 brake horsepower (4,200 kW), used for cruising speed), and a General Electric LM2500 gas turbine (providing 22,125 shaft horsepower (16,499 kW), used to reach top speed for short periods).[1] Chakri Naruebet has a maximum speed of 25.5 knots (47.2 km/h), although she can only reach 17.2 knots (31.9 km/h) with the diesels alone.[1] She has a maximum range of 10,000 nautical miles (19,000 km) with a constant speed of 12 knots (22 km/h), and 7,150 nautical miles (13,240 km) at 16.5 knots (30.6 km/h).[1]

Armament and aircraft

Chakri Naruebet is fitted with two 0.5-inch (13 mm) machine guns, and three Matra Sadral sextuple surface-to-air missile launchers firing Mistral missiles.[2][6] The missile launchers were installed in 2001.[2] The vessel is also fitted for but not with an 8-cell Mark 41 VLS for Sea Sparrow missiles, and four Phalanx close-in weapon systems.[5]

The carrier's standard air group consists of six to eight AV-8S Matador V/STOL aircraft (an export version of the AV-8A Harrier acquired secondhand from the Spanish Navy) and four to six S-70B Seahawk helicopters.[1][4][6] By 1999, only one Matador was operable.[7] Chakri Naruebet is also capable of carrying up to fourteen additional helicopters; a mix of Sikorsky Sea King, Sikorsky S-76, and CH-47 Chinook.[1] There is only enough hangar space for ten aircraft.[2][6]

The flight deck measures 174.6 by 27.5 metres (573 by 90 ft).[2] A 12° ski-jump is fitted to assist the Matadors in taking off.[2] There are two aircraft lifts, each capable of lifting 20 tons.[2]

Sensors and countermeasures

The sensor suite of Chakri Narebet consists of a Hughes SPS-52C air search radar on the E/F band, and two 2 x Kelvin-Hughes 1007 navigational radars.[2] There are provisions to install an SPS-64 surface search radar and a hull-mounted sonar, but neither has been fitted as of 2008.[6][2] Fire control facilities are also yet to be fitted.[2]

The carrier is equipped with four SBROC decoy launchers, and an SLQ-32 towed decoy[6]

Construction

Work on the Thai carrier commenced in October 1993, although it was not until 12 July 1994 that the hull was laid down.[2][5] Chakri Naruebet was launched on 20 January 1996.[5]

Sea trials were conducted from October 1996 to January 1997, the latter part of which was in coordination with the Spanish Navy.[2][5] This was followed by aviation trials at Rota, Spain.[2] The carrier was handed over on 27 March 1997, when she was commissioned into the RTN.[1][2] She arrived in Thai waters at the start of August 1997, and formally entered service on 10 August.[5]

Chakri Naruebet cost US$336 million to build.[7]

Role

Chakri Naruebet is the first aircraft carrier to be operated by a South East Asian nation.[5] She is assigned to the Third Naval Area Command, and her intended duties include operational support of the RTN's amphibious warfare forces, patrols and force projection around Thailand's coastline and economic exclusion zone, diaster relief and humanitarian missions, and search-and-rescue operations.[1][2][5][4][7]

However, at the time the carrier entered service, the 1997 Asian Financial Crisis prevented the necessary funding to operate the ship from being available.[7][5] The limited defensive armament compounded the problem; consequently, Chakri Naruebet is usually only operational for a single day per month, with the rest of the time spent alongside as a "part-time tourist attraction".[1][5][7] The ship rarely leaves the proximity of the Sattahip naval base, and when she does, it is usually to transport and host the Royal Family of Thailand.[1][5] Naval commentators consider Chakri Naruebet to be less an aircraft carrier and more the world's most expensive royal yacht, while the Thai media have nicknamed the ship "Thai-tanic", and consider her to be a white elephant.[5][7]

The ship participated in disaster relief operations following the 2004 Indian Ocean tsunami.[citation needed]

Citations

  1. ^ a b c d e f g h i j k l m n o p q Werthem (ed.), Naval Institute Guide to Combat Fleets of the World, p. 772
  2. ^ a b c d e f g h i j k l m n o p q Saunders (ed.) Jane's Fighting Ships 2008-2009, p. 786
  3. ^ "Chakri Nauebet disaster relief missions". Royal Thai Navy.
  4. ^ a b c Ireland, The Illustrated Guide to Aircraft Carriers of the World, p. 249
  5. ^ a b c d e f g h i j k l Bishop & Chant, Aircraft Carriers, p. 88
  6. ^ a b c d e f Bishop & Chant, Aircraft Carriers, p. 89
  7. ^ a b c d e f Carpenter & Wiencek, Asian Security Handbook 2000, p. 302

References

Media related to HTMS Chakri Naruebet at Wikimedia Commons