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	KRI Diponegoro, lead ship of the class
Class overview
Name	Diponegoro class
Builders	Damen Schelde Naval Shipbuilding
Operators	Indonesian Navy
Preceded by	Fatahillah class ; Dewantara class;
Succeeded by	Bung Tomo class
Built	2005–2008
In commission	2007–present
Planned	8
Completed	4
Active	4
General characteristics (Corvette 9113)
Type	Multi-purpose corvette / frigate
Displacement	1,692 tons
Length	90.71 m (297 ft 7 in)
Beam	13.02 m (42 ft 9 in)
Draft	3.60 m (11 ft 10 in)
Propulsion	2 × SEMT Pielstick 20PA6B STC rated at 8910 kW each driving a lightweight Geislinger coupling combination BE 72/20/125N + BF 110/50/2H (steel – composite coupling combination); 4 × Caterpillar 3406C TA generator rated at 350 kW each; 1 × Caterpillar 3304B emergency generator rated at 105 kW; 2 × shaft with Rolls-Royce Kamewa 5 bladed controllable pitch propeller; 2 × Renk ASL94 single step reduction gear with passive roll stabilization;
Speed	Maximum: 28 knots (52 km/h; 32 mph); Cruising: 18 knots (33 km/h; 21 mph); Economy: 14 knots (26 km/h; 16 mph);
Range	Cruising speed at 18 kn (33 km/h; 21 mph): 3,600 nmi (6,700 km; 4,100 mi); Economy speed at 14 kn (26 km/h; 16 mph): 4,800 nmi (8,900 km; 5,500 mi);
Complement	20, up to 80
Sensors and ; processing systems	Combat System: Thales Group TACTICOS with 4 x Multifunction Operator Console Mk 3 2H; Search radar: MW08 3D multibeam surveillance radar; IFF: Thales TSB 2525 Mk XA (integrated with MW08); Navigation radar: Sperry Marine BridgeMasterE ARPA radar; Fire control radar: LIROD Mk 2 tracking radar; Data Link: LINK Y Mk 2 datalink system; Sonar: Thales UMS 4132 Kingklip medium frequency active/passive ASW hull mounted sonar; Internal Communications: Thales Communication's Fibre Optical COmmunications Network (FOCON) or EID's ICCS where on-board users have access to internal and/or external communication channels and integrated remote control of communications equipment; Satellite Comms: Nera F series; Navigation System: Raytheon Anschutz integrated navigation; Integrated Platform Management System: Imtech UniMACs 3000 Integrated Bridge System;
Electronic warfare ; & decoys	ESM: Thales VIGILE 100; ECM: Racal Scorpion 2L; Decoy: TERMA SKWS, DLT-12T 130mm decoy launchers, port, starboard;
Armament	Guns:; 1 × Oto Melara 76 mm gun (A position); 2 × 20 mm Denel GI-2 gun (B position); Missiles:; 2 × quad (8) Mistral TETRAL Anti-air missile, forward & aft; 4 × Exocet MM40 Block III anti-surface vessel missile; Torpedoes:; 2 × triple launchers for WASS A244-S mod.3;
Aviation facilities	Landing pad, optional hangar

The Diponegoro class of guided-missile corvettes of the Indonesian Navy are SIGMA 9113 types of the Netherlands-designed Sigma family of modular naval vessels, named after Indonesian Prince Diponegoro. Currently there are four Diponegoro-class corvette in service.

History

The Indonesian variant is based on the Sigma 9113 design.^[5] Work on the first of the class, KRI Diponegoro, began with the first steel cutting conducted in October 2004. The ship was christened on 16 September 2006 and commissioned on 2 July 2007 by Admiral Slamet Soebijanto, Indonesian Navy Chief of Staff.^[6]

Options for two other units were exercised in January 2006 with the first steel cut commenced on 3 April 2006^[7] in Damen's Schelde Naval Shipbuilding yard, Vlissingen-Oost yard and not in Surabaya stated earlier.

On 28 August 2007, Jane's Missiles and Rockets reported^[8] that Indonesia was having problems securing the export license for the MM-40 Exocet block II and are considering Chinese made C-802 anti-ship missiles as alternatives. However, the ships have already been delivered with the Exocet missiles. In 2019 MM40 Exocet Block III were launched from KRI Sultan Iskandar Muda (367).^[9]

Modernisation

In early November 2022, PT Len and Thales Nederland has signed a contract to undertake the refurbishment of the integrated mission systems for all four Diponegoro-class ships. These ships will soon be refurbished with an Integrated Missions System including the TACTICOS Baseline 2 Combat Management System, the Naval Smarter (NS) 50 radar, as well as the latest in software-driven radar technology able to combat the highest level of threats.^[10]^[11]

Ships of class

Indonesian Navy / Sigma 9113 design

Name	Pennant	Laid down	Launched	Commissioned	Notes
KRI Diponegoro	365	24 March 2005	16 September 2006	5 July 2007	Diponegoro, a National Hero from Central Java
KRI Sultan Hasanuddin	366	24 March 2005	16 September 2006	24 November 2007	Sultan Hasanuddin, a National Hero from South Sulawesi
KRI Sultan Iskandar Muda	367	8 May 2006	24 November 2007	18 October 2008	Iskandar Muda, a National Hero from Aceh
KRI Frans Kaisiepo	368	8 May 2006	28 June 2008	7 March 2009	Frans Kaisiepo, a National Hero from Papua and the fourth Governor of Papua