Name: HTMS Phutthaloetla Naphalai
Builder: Avondale Shipyards, Westwego, Louisiana
Commissioned: 1997
Class and 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 42 gun
• 1 × 20 mm Phalanx CIWS
Aviation facilities: Helicopter deck and hangar
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