It is said in the IHS Jane’s Navy International that state-owned shipbuilder PT PAL has held a keel-laying ceremony for the Indonesian Navy’s second SIGMA 10514 Perusak Kawal Rudal (PKR) guided-missile frigate. Defence minister Ryamizard Ryacudu, who presided over the ceremony at PT PAL’s premises in Surabaya, described the keel laying as a vote of confidence in the local shipbuilding industry’s capability to produce a complex warship like a PKR frigate.

PT PAL is building two PKR frigates in collaboration with Damen Schelde Naval Shipbuilding (DSNS, a Dutch shipyard) under a skills and technology transfer arrangement. For the second vessel, the Indonesian shipbuilder PT PAL is producing all of the modules except for the mast/bridge/operations block, which is to be completed by DSNS at its yard in Vlissingen, the Netherlands. For the first ship, PT PAL is responsible for the forward and stern hull modules and the mid and aft superstructure blocks. Both vessels will undergo final assembly and trials in Surabaya, the Indonesian Ministry of Defence (MoD) announced on 11 December 2014.
The Indonesian MoD signed a contract with DSNS for the first vessel in December 2012, while an option for the second ship was exercised in mid-2013. The frigates are scheduled for delivery in January 2017 and October 2017, respectively. Indonesia has planned to acquire at least two more ships in the class, although a contract for these has yet to be finalised.

The Indonesian MoD has said it will deploy the SIGMA PKR frigates for maritime surveillance, including to counter piracy and illegal fishing. The Tentera Nasional Indonesia – Angkatan Laut (TNI-AL) plans to equip the warships with AS565 Panther helicopters that will be fitted with the Helicopter Long-Range Active Sonar (HELRAS) dipping sonar and torpedo launching system, bolstering the frigates’ Anti-Submarine Warfare (ASW) capabilities.
According to Ridzwan Rahmat, Singapore IHS, the Indonesian frigates will be equipped with a variant of the Thales TACTICOS 300 combat management suite, a Rheinmetall Defence Millennium 35 mm Close-In Weapon System (CIWS), a Thales SMART-S Mark-2 surveillance radar, and a 12-cell vertical-launch air-defence system. The ships will also be equipped with six 324 mm torpedo tubes.

SIGMA FRIGATE 10514
(Perusak Kawal Rudal guided-missile frigate)
GENERAL
Customer: Indonesian Navy
Basic functions: Naval Patrol EEZ, deterrence, Search and Rescue, 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
DIMENSIONS
Length o.a.: 105.11 m
Beam mld: 14.02 m
Depth no.1 deck: 8.75 m
Draught (dwl): 3.7 m
Displacement (dwl): 2365 tonnes

PERFORMANCE
Speed (Maximum power): 28 knots (52 km/h)
Range at 14 knots (26 km/h): 5000 NM (9260 km)
Endurance: 20 days at sea
PROPULSION SYSTEM
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 × CPP diameter 3.55 m

AUXILIARY SYSTEMS
Generator sets: 6 × 715 kWE (kilowatts electrical)
Emergency gen. set: 1 × 180 kWE (kilowatts electrical)
Chilled water system: 2 × units, redundant distrubution
Fire fighting: 4 × main pumps + 1 × service pump
Degaussing System
DECK EQUIPMENT
Helicopter deck: max. 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)

ACCOMMODATION
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
WEAPON & SENSOR SUITE
3D-Surveillance & target indication radar & IFF (Identification Friend or Foe)
Radar/electro optical fire control
Hull Mounted Sonar
Combat management system
Medium calibre gun 76 mm
1 × Close In Weapon System
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
NAUTICAL EQUIPMENT
Integrated bridge console, 2 × Radar, ECDIS (Electronic Chart Display & Information System), GMDSS-A3 (Global Maritime Distress and Safety System), reference gyro