Sea trials of SIGMA

According to Ridzwan Rahmat, IHS Jane’s Defence Weekly correspondent, Indonesian state-owned shipbuilder PT PAL has begun sea trials of the country’s first SIGMA 10514 Perusak Kawal Rudal (PKR) guided-missile frigate on order for the Indonesian Navy.

Indonesia has begun sea trials of its most complex indigenously assembled warship to date
Indonesia has begun sea trials of its most complex indigenously assembled warship to date

The vessel, which will be the future KRI Raden Eddy Martadinata (331), began its sea trials in the week starting 11 July in waters off Ujung, Surabaya. The trials included a speed test, a crash stop test, and turning manoeuvres.

Raden Eddy Martadinata was launched by PT PAL on 18 January at the company’s shipyard in Surabaya. The frigate is one of two platforms being constructed jointly by Dutch shipbuilder Damen Schelde Naval Shipbuilding (DSNS) and PT PAL under a contract signed with the Indonesian Ministry of Defence in June 2012.

According to specifications provided by PT PAL, the PKR frigate has a standard displacement of approximately 2,400 tonnes, can accommodate a crew of 120, and it can hold a 10-tonne helicopter on its flight deck. The platform has a top speed of 28 knots/32 mph/52 km/h, a maximum range of 5,000 nautical miles/5,754 miles/9,260 km at 14 knots/16 mph/26 km/h, and a standard range of 4,000 nautical miles/4,603 miles/7,408 km at 18 knots/21 mph/33km/h.

Raden Eddy Martadinata ‘s weapons include an Oto Melara 76-mm main gun, launchers for MBDA MM40 Exocet Block II anti-ship missiles, six (two triple) 324-mm Eurotorp B515 torpedo launchers, the Rheinmetall Defence Millennium 35-mm close-in weapon system, and a 12-cell Vertical Launch System (VLS) that can deploy the MBDA VL-MICA surface-to-air missiles.

The weapon systems will be completed with a modified version of Thales’ TACTICOS Combat Management System (CMS).

The platform is on track for delivery to the TNI-AL in January 2017.




Customer Indonesian Navy
Basic functions Naval Patrol Exclusive Economic Zone (EEZ), deterrence, Search and Rescue (SAR), ASW (Anti-Submarine Warfare), AAW (Anti-Aircraft Warfare), ASUW (Anti-Surface Warfare), EW (Electronic Warfare)
Hull material Steel grade A/AH36
Standards Naval/Commercial, naval intact/damaged stability, noise reduced, moderate shock
Classification Lloyd’s Register of Shipping (supervision)
Length overall (o.a.) 344.85 feet/105.11 m
Beam Moulded (mld) 45 feet/14.02 m
Depth no.1 deck 28.7 feet/8.75 m
Draught Design Waterline (dwl) 12.14 feet/3.7 m
Displacement Design Waterline (dwl) 2,365 tonnes
Speed (Maximum power) 28 knots/32 mph/52 km/h
Range at 14 knots/16 mph/26 km/h 5,000 nautical miles/5,754 miles/9,260 km
Endurance 20 days at sea
Propulsion type CODOE (Combined Diesel or Electric)
Diesel engines 2 × 10,000 kW MCR (Maximum Continuous Rating) Propulsion type
Electric motors 2 × 1300 kW
Gearbox 2 × double input input/single output
Propellers 2 × Controllable Pitch Propeller (CPP) diameter 11.65 feet/3.55 m
Generator sets 6 × 715 kWE (kilowatts electrical)
Emergency generator set 1 × 180 kWE (kilowatts electrical)
Chilled water system 2 × units, redundant distribution
Fire fighting 4 × main pumps + 1 × service pump
Degaussing System
Helicopter deck maximum 10 tons helicopter, with lashing points
Heli operations day/night with refueling system
Helicopter hangar
RAS (Replenishment at Sea) on helicopter deck PS&SB, astern fuelling
Boats 2 × RHIB (Rigid-Hulled Inflatable Boat)
Fully air-conditioned accommodation for 120 persons
Commanding Officer 1
Officers 26
Chief Petty Officers 10
Petty Officers 36
Junior Ratings 29
Trainee Officers 18
Provisions for NBC citadel/decontamination
3D-Surveillance & target indication radar & IFF (Identification Friend or Foe)
Radar/electro optical fire control
Hull Mounted Sonar
Combat Management System (CMS)
Medium calibre gun 76-mm
1 × Close In Weapon System (CIWS)
2 × SSM (Surface-to-Surface Missile) launcher
12 cell VL (Vertical Launch) SHORADS
2 × triple 324-mm Torpedo launcher
ESM & ECM (Electronic Support Measures and Electronic Countermeasures systems)
2 × Decoys/chaff
Integrated internal & external communication system
Integrated bridge console, 2 × Radar, ECDIS (Electronic Chart Display & Information System), GMDSS-A3 (Global Maritime Distress and Safety System), reference gyro