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HTMS Krabi on Sydney Harbour in October 2013
History
Thailand
Name	HTMS Krabi
Namesake	Krabi Province
Builder	Mahidol Adulyadej Naval Dockyard BAE Systems Surface Ships
Launched	3 December 2011
Commissioned	26 August 2013
Identification	MMSI number: 567443000 Callsign: HSNK
Status	Active
General characteristics
Class and type	Modified River-class patrol vessel
Displacement	2,000 t (2,000 long tons; 2,200 short tons)
Length	90.5 m (296 ft 11 in)
Beam	13.5 m (44 ft 3 in)
Propulsion	2 × MAN 16V28/33D diesel engines, 14,700kW/10,950HP, 2 shafts 2 × controllable-pitch propellers
Speed	25 kn (46 km/h)
Range	5,500 nmi (10,200 km)
Endurance	35 days
Sensors and processing systems	Thales Variant surveillance radar Thales Lirod Mk2 fire control radar
Armament	1 × Oto Melara 76 mm gun 2 × 30mm MSI guns 2 × Machine guns
Aircraft carried	One H145M helicopter
Aviation facilities	20 meter flight deck

HTMS Krabi (OPV-551) is an offshore patrol vessel (OPV) of the Royal Thai Navy. She is a modified River-class patrol vessel, and was built by Mahidol Adulyadej Naval Dockyard, with design and technology transfer support from BAE Systems Surface Ships. Additional construction took place at the Royal Thai Navy Mahidol Dockyard in Sattahip.

Construction

The contract for the construction of Krabi was signed in June 2009, and construction began in August 2010. Krabi was launched on 3 December 2011 in a ceremony attended by Princess Maha Chakri Sirindhorn. After launch, she began outfitting, and is expected to enter service in 2013. The Thai Navy plans to use Krabi to patrol Thailand's Economic Exclusion Zone (EEZ), as well as for fishery and natural resource protection and disaster relief.

Krabi is 91 meters in length, and carries an Oto Melara 76 mm main gun and two MSI 30mm secondary guns for primary defense, as well as machine guns. It is able to operate an AgustaWestland AW139 helicopter flying from a 20 metres (66 ft) flight deck. Her top speed is expected to be over 25 knots (46 km/h; 29 mph), and she is powered by two MAN 16v 28/33D diesel engines, making about 7.2 megawatts (9,700 hp). She is equipped with a Thales Variant surveillance radar, a Thales Lirod Mk2 fire control radar and the Thales Tacticos combat management system.

Operational history

In October 2013 Krabi participated in the International Fleet Review 2013 in Sydney, Australia. In May 2016 the Royal Thai Navy said it is planning to deploy its new H145M helicopters from HTMS Krabi in service with 202 Squadron.

See also

• List of naval ship classes in service
• River-class patrol vessel (The HTMS Krabi is a modified version of this class)

References

1. ^ "Offshore Patrol Vessels". www.baesystems.com. BAE Systems. Retrieved 2 August 2016.
2. ^ "RTN to deploy H145M helicopters from Pattani, modified River-class patrol vessels - IHS Jane's 360". janes.com. Retrieved 7 August 2016.
3. ^ "Thailand to build offshore patrol vessels". Baird Maritime. 25 August 2009. Archived from the original on 26 April 2012. Retrieved 7 December 2011.
4. ^ "เรือหลวงกระบี่ เรือ OPV ลำใหม่ ฝีมือคนไทย". Thai Armed Force. 30 November 2011. Archived from the original on 24 April 2012. Retrieved 22 December 2011.
5. ^ "Royal Thai Navy Launches Offshore Patrol Vessel Designed by BAE Systems". Shipbuilding Tribune. 6 December 2011. Archived from the original on 15 May 2012. Retrieved 7 December 2011.

v t e River-class patrol vessels
Royal Navy	Mersey Severn Tyne Clyde Forth Medway Trent Tamar Spey
Royal Thai Navy	Krabi Prachuap Khiri Khan
Royal Bahrain Naval Force	Al-Zubara (ex-Clyde)
Brazilian Navy Amazonas class	Amazonas Apa Araguari
List of patrol vessels of the Royal Navy

• 2011 ships
• Ships built in Thailand
• Krabi-class patrol vessels of the Royal Thai Navy