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HTMS Phutthayotfa Chulalok
US Navy 050624-N-7783B-020 HTMS Phutthayotfa Chulalok crop
HTMS Phutthayotfa Chulalok in 2005
Career Thai Navy Ensign
Name: HTMS Phutthayotfa Chulalok
Builder: Avondale Shipyards, Westwego, Louisiana
Laid down: 27 April 1972
Launched: 3 February 1973
Acquired: Leased 1994, purchased 9 December 1999
Status: in active service, as of 2025
Badge: Ship logo
General characteristics
Class & type: Knox-class frigate
Displacement: 4,065 long tons (4,130 t)
Length: 438 ft (134 m)
Beam: 47 ft (14 m)
Draft: 25 ft (7.6 m)
Propulsion: Steam turbine
2 × 1,200 psi boilers
1 geared turbine
1 shaft
35,000 shp (26,099 kW)
Speed: 27 knots (31 mph; 50 km/h)
Complement: 250 officers and enlisted
Sensors and
processing systems:
SPS-40B 2-D air search radar
SPG-53 fire control radar
SQS-26CX bow sonar
SQR-18 towed sonar
SLQ-32(V)1 passive intercept
Armament: • 8 × ASROC anti-submarine missiles
• 4 × Harpoon missiles
• 4 × Mk.32 torpedo tubes with Mark 44 torpedoes
• 1 × 5"/54 caliber Mark 45 gun
• 1 × 20 mm Phalanx CIWS
Aviation facilities: Helicopter deck and hangar

HTMS Phutthayotfa Chulalok (FFG 461) (Thai language: พุทธยอดฟ้าจุฬาโลก) is the former USS Truett (FF-1095), Knox-class frigate. The ship is named after the first king of the Chakri Dynasty, King Phutthayotfa Chulaok the Great.

The Royal Thai Navy first leased the ship from the US Navy after she was decommissioned on July 30, 1994. The ship was eventually purchased on December 9, 1999.

A Phutthayotfa Chulalok-class frigate, she has a sister ship, the HTMS Phutthaloetla Naphalai (FFG 462).

External links[]

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