Ahmad Yani Class Indonesian Frigate

Ahmad Yani Class

Frigate

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Basic Information

Name

Ahmad Yani Class Indonesian Frigate

Designation

Ahmad Yani Class

Alternate Designation

Ahmad Yani Class

Equipment Type

Frigate

Manufacturer

—

Date of Introduction

1963

Description

The Ahmad Yani-class of six general-purpose frigates were acquired by the Indonesian Navy in the 1980s. They were originally built in the Netherlands for the Royal Netherlands Navy as the Van Speijk-class and were licence-built versions of the British Leander-class

Naval & Littoral Specifications

Crew 180

Beam 12.50 m

Draft 4.57 m

Variants

AHMAD YANI Commissioned: 1987 Status: Active

SLAMET RIYADI Commissioned: 1967 Status: Active

YOS SUDARSO Commissioned: 1967 Status: Active

OSWALD SIHAAN Commissioned: 1967 Status: Active

ABDUL HALIM PERDANAKUSUMA Commissioned: 1967 Status: Active

KAREL SATSUITUBUN Commissioned: 1968 Status: Active

System

Alternative Designation Ahmad Yani Class

Type Frigate

Builder 351, 352 and 356: Netherlands Dok en Scheepsbouw Mij, Amsterdam, Netherlands 353, 354 and 355: Koninklijke Maatschappij de Schelde, Flushing, Netherlands

Crew 180 total

Note The Ahmad Yani-class of six general-purpose frigates were acquired by the Indonesian Navy in the 1980s. They were originally built in the Netherlands for the Royal Netherlands Navy as the Van Speijk-class and were licence-built versions of the British Leander-class

Dimensions

Length 113.38 m

Beam 12.50 m

Draft 4.57 m

Displacement, Standard 2,200 tons standard

Displacement, Full Load 2,850 tons full load

Propulsion System

Engine Name 2 x Caterpillar type 3616 diesels (except pendant 356: 2 Caterpillar type 3212 diesels and pendant 354: 2 SEMT-Pielstick type 12 PA6B diesels).

Engine Type Diesel

Engine Power 14,617 total bhp (except pendant 356: 12,512 total bhp and 14,000 total bhp)

Boilers 2 x Babcock & Wilcox 38.7 kg/sq cm, 450-deg Celsius

Maximum Range 4,500 nm at 12 knots

Maximum Speed 20 knots

Gun Weapon Systems

Gun Weapon System #1

Name 1 x OTO Melara

Type Naval Gun

Caliber 76mm

Barrel Length 4,724.4 mm

Weight 7.5 tons

Crew remote controlled

Elevation −15°/+85° speed: 35°/s (acceleration: 72°/s²)

Traverse 360°

Rate of Fire Compact: 85 rounds/min Super Rapid: 120 rounds/min

Muzzle Velocity 915 m/s

Maximum Firing Range HE-PFF 16,000 m SAPOMER 20,000 m VULCANO 40,000 m

Feed System Magazine capacity: 80 ready rounds on Compact gun mount

Gun Weapon Systems #1 Ammunition

Type Rifle

Caliber 76 mm

Shell 76×636mmR

Basic Load INA

Gun Weapon System #2

Name STK 50MG

Type Heavy Machine Gun

Caliber 12.7mm

Quantity 4 x STK 50MG 12.7mm Heavy Machine Guns

Length 1,778 mm

Barrel Length 1,143 mm

Width 190 mm

Weight 30 kg (66.14 lb) (complete gun assembly w/o feed chute and tripod adaptor)

Barrels Single barrel (progressive RH parabolic twist, 8 grooves)

Action Gas-operated, rotating bolt

Rate of Fire 400–600 rounds/min

Feed System Single sprocket Belt-fed with dual-feed chutes

Gun Weapon System #2 Ammunition

Type Rifle

Caliber 12.7mm

Cartridge 12.7×99mm NATO

Basic Load INA

Missile Weapon Systems

Missile #1

Note 2 x quad Harpoon SSM launchers [only two missiles per launcher usually carried] (believed to be time expired)

Missile #2

Note 2 x twin by Matra Simbad SAM launchers [unknown no. Mistral missiles carried]

Aviation Facilities

Helicopters 2 x Wasp (HAS-1) ASW helicopters

Torpedoes

Torpedo Tubes 2 x triple 324-mm (U.S. Mark 32) tubes [unknown no.U.S. Mark 46, Mod. 2 torpedoes carried]

Fire Control Systems

FCS Name INA

Computerized FCS Yes

Battle Management System INA

Radar Systems

Air Search Radar 1 x Thales LW-03 air search

Air/Surface Radar 1 x Thales DA-05/2 air/surface search

Navigation Radar 1 x Decca TM-1229C navigation

Main Gun System Radar 1 x Thales M-45 system for 76-mm guns

Gun Director 1 x Thales LIOD Mark 2 optronic gun director (354, 353 and 356 only)

Sonar Systems

Name 1 x Signaal CWE-610

Type Hull Mounted Sonar

Protection

Active Protection System INA

Countermeasures Yes

NBC Water Washdown System Yes

EW 1 x British UA-8 and 1 x UA-9 intercept

Image Sources

Notes https://en.wikipedia.org/wiki/Ahmad_Yani-class_frigate; https://en.m.wikipedia.org/wiki/File:Port_view_of_ROK_ship_Kyong_Buk_(FF_956)_near_San_Diego,_CA.jpeg; https://www.facebook.com/indonesiannavy.jalesvevajayamahe/?locale=sr_RS;

Details

Country of Origin Indonesia

Category Naval

Naval

Classification

Domain

Naval & Littoral

Equipment Status

Active

Dimensions

Length

113.38 m

Width

—

Height

—

Weight

—

Operators (1)

Indonesia

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