HTMS Krabi

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RAN-IFR 2013 D3 43.JPG
HTMS Krabi on Sydney Harbour in October 2013
Career (Thailand) Naval Ensign of Thailand.svg
Name: HTMS Krabi
Builder: Mahidol Naval Dockyard, Chonburi
BAE Systems Surface Ships
Launched: 3 December 2011
Commissioned: 26 August 2013
General characteristics
Class and type: Modified River-class patrol vessel
Displacement: 1,969 tons
Length: 90.5 metres (297 ft)
Beam: 13.5 metres (44 ft)
Draught: 3.8 metres (12 ft)
Installed power: c. 7.2 MW (9,700 hp)
Propulsion: 2 × MAN 16v 28/33D diesel engines
2 × controllable-pitch propellers
Speed: 24 knots (44 km/h) max
Sensors and
processing systems:
Thales Variant surveillance radar and Thales Lirod Mk2 fire control radar
Aircraft carried: One AgustaWestland AW139 helicopter
Aviation facilities: 20 meter flight deck

HTMS Krabi (OPV-551) is an offshore patrol vessel of the Royal Thai Navy. She is a modified River-class patrol vessel, and was built by Mahidol Naval Dockyard, with design and technology transfer support from BAE Systems Surface Ships.[1] Additional construction took place at the Royal Thai Navy Mahidol Dockyard in Sattahip.[2]


The contract for the construction of Krabi was signed in June 2009,[1] and building began in August 2010.[3] Krabi was launched on 3 December 2011 in a ceremony attended by Princess Maha Chakri Sirindhorn.[3] After launching, she began outfitting, and is expected to enter service in 2013.[2][3] The Thai Navy plans to use Krabi to patrol Thailand's Economic Exclusion Zone, as well as for fishery and natural resource protection and disaster relief.[3]

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.[1][2] She carries one AgustaWestland AW139 helicopter flying from a 20 metres (66 ft) flight deck.[1] Her top speed is expected to be over 25 knots (46 km/h; 29 mph),[2] and she is powered by two MAN 16v 28/33D diesel engines, making about 7.2 megawatts (9,700 hp).[1] 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[edit]

In October 2013 Krabi participated in the International Fleet Review 2013 in Sydney, Australia.


  1. ^ a b c d e "Thailand to build offshore patrol vessels". Baird Maritime. 25 August 2009. Archived from the original on 7 December 2011. Retrieved 7 December 2011. 
  2. ^ a b c d "เรือหลวงกระบี่ เรือ OPV ลำใหม่ ฝีมือคนไทย". Thai Armed Force. 30 November 2011. Archived from the original on 21 December 2011. Retrieved 22 December 2011. 
  3. ^ a b c d "Royal Thai Navy Launches Offshore Patrol Vessel Designed by BAE Systems". Shipbuilding Tribune. 6 December 2011. Archived from the original on 7 December 2011. Retrieved 7 December 2011.