Ratanakosin Class Thai Corvette
Ratanakosin Class
Corvette
Other
Basic Information
Name
Ratanakosin Class Thai Corvette
Designation
Ratanakosin Class
Alternate Designation
Ratanakosin Class
Equipment Type
Corvette
Manufacturer
—
Date of Introduction
1986
Description
The Ratanakosin Class Thai Corvette is a class of two corvettes that were built for the Royal Thai Navy in the 1980s. . The Ratanakosin class is used as flagships for squadrons of fast attack craft. Both ships remain in service.
Naval & Littoral Specifications
Crew
15
Beam
9.55 m
Draft
2.44 m
Variants
HTMS Ratanakosin
Commissioned: 1986
Status: Active
HTMS Sukhothai
Commissioned: 1987
Status: Active
System
Alternative Designation
Ratanakosin Class
Type
Corvette
Builder
Tacoma Boatbuilding Company, Tacoma, Washington, United States
Crew
15 officers, 72 enlisted
Dimensions
Length
76.82 m
Beam
9.55 m
Draft
2.44 m
Displacement, Standard
840 tons
Displacement, Full Load
960 tons
Propulsion System
Engine Name
2 × MTU 20V1163 TB83
Engine Type
Diesel
Engine Power
12,000 kW (16,000 bhp)
Generators
INA
Propellers
2 ea
Maximum Range
5,600 km at 16 kn (30 km/h)
Maximum Speed
26 knots (48 km/h)
Gun Weapon Systems
Gun Weapon System #1
Name
1 x OTO Melara 76mm Naval Gun
Type
Naval Gun
Caliber
76 mm
Barrel Length
4,724.4 mm
Weight
7.5 tons
Crew
Remote Controlled
Elevation
−15°/+85°
speed: 35°/s (acceleration: 72°/s²)
Traverse
360°
speed: 60°/s (acceleration: 72°/s²)
Rate of Fire
Compact: 85 rounds/min
Super Rapid: 120 rounds/min
Maximum Firing Range
915 m/s
Muzzle Velocity
HE-PFF 16,000 m
SAPOMER 20,000 m
VULCANO 40,000 m
Feed System
Magazine capacity:
80 ready rounds on Compact gun mount
Ammunition
Type
Rifle
Caliber
76 mm
Shell
76×636mmR
Basic Load
INA
Gun Weapon System #2
Name
2 × Bofors 40 mm ( 1 twin Otobreda mount)
Type
Autocannon
Caliber
40 mm
Length
4,000 mm
Weight
2,400 kg
Elevation
INA
Traverse
INA
Rate of Fire
330 rounds/min
Muzzle Velocity
1,000 m/s
Maximum Firing Range
12,500 m
Ammunition
Type
Rifle
Caliber
40 mm
Cartridge
40 × 365 mm R
Basic Load
INA
Gun Weapon System #3
Note
2 × 20 mm Oerlikon GAM-B01 cannon
Missile Weapon System
Missile #1
Name
8 × RGM-84 Harpoon SSM
Type
Anti-Ship Missile
Launchers
2 x quad launchers
Length
4.6 m
Diameter
34 cm
Wingspan
0.91 m
Weight
691 kg
Engine
Teledyne CAE J402 turbojet/solid propellant booster for surface and submarine launch; greater than 600 lbf (2,700 N) of thrust
Guidance System
Sea-skimming cruise monitored by radar altimeter, active radar terminal homing
Warhead
221 kg
Speed
Mach 0.71
Maximum Range
139 km
Minimum Range
INA
Flight Altitude
Sea-skimming
Basic Load
8 × RGM-84 Harpoon SSM
Missile #2
Name
24 x Selenia Aspide missiles
Type
Surface-to Air Missile
Launchers
1 × octuple Albatros SAM launcher
Length
3.72 m
Diameter
234 mm
Wingspan
80 cm
Weight
220 kg
Engine
INA
Guidance System
semi-active radar homing seeker
Warhead
35 kg
Maximum Speed
4920 km/h (mach 4)
Effective Firing Range
25 km
Basic Load
24 x Selenia Aspide missiles
Torpedoes
Launcher
2 × Mark 32 triple torpedo tubes
Torpedoes
Sting Ray torpedoes
Fire Control Systems
FCS Name
1 × HSA LIROD-8 optical fire control system
Computerized FCS
Yes
Radar Systems
Surface Search Radar #1
1 × Decca 1226 surface search radar
Surface Search Radar #2
1 × HSA ZW-06 surface search radar
Air/Surface Search Radar
1 × HSA DA-05 air/surface search radar
Fire Control Radar
1 × HSA WM-25 fire control radar
Sonar Systems
Name
1 x STN Atlas DSQS-21C hull mounted sonar
Type
Hull Mounted
Protection
Active Protection System
INA
Countermeasures
Yes
NBC Water Washdown System
Yes
EW
INA
Details
Country of Origin
Thailand
Category
Naval
Naval
Filter Label
R
Classification
Domain
Naval & Littoral
Equipment Status
Active
Dimensions
Length
76.82 m
Width
—
Height
—
Weight
—
Operators (1)
Thailand
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