Diponegoro-class (Sigma 9113)
Indonesian corvette, introduced in 2007, displaces 1,692 tons and has a crew of 80. Key figures: displacement 1,692 tons, length 91 m, top speed 28 knots, crew 80, unit cost $222M, built 4. In service with 1 navy — Indonesia (4).
| Subtype | Multi-purpose corvette |
| Displacement | 1692 tons |
| Crew | 80 members |
| Width | 13.02 m (42.7 ft) |
| Length | 90.71 m (297.6 ft) |
| Propulsion | 2 × SEMT Pielstick 20PA6B STC rated at 8910 kW each; 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 |
| Range | 4,800 nm at 14 knots |
| Maximum speed | 28 knots |
- 1 × Oto Melara 76 mm gun
- 2 × 20 mm Denel GI-2 gun
- 2 × quad (8) Mistral TETRAL Anti-air missile
- 4 × Exocet MM40 Block III anti-surface vessel missile
- 2 × triple launchers for WASS A244-S mod.3 torpedoes
- Landing pad, optional hangar
Description
The Diponegoro class consists of four guided-missile corvettes operated by the Indonesian Navy. Based on the Netherlands-designed SIGMA 9113 modular vessel family, the class succeeded the Fatahillah and Dewantara designs. Damen Schelde Naval Shipbuilding constructed the vessels between 2005 and 2008 at the Vlissingen-Oost yard. The lead ship, KRI Diponegoro, began construction in October 2004 and entered service in July 2007. Subsequent units include Sultan Hasanuddin, Sultan Iskandar Muda, and Frans Kaisiepo, all commissioned by March 2009.
The design employs a modular structure configured for multi-purpose roles. Propulsion is provided by SEMT Pielstick diesel engines driving five-bladed controllable pitch propellers via a steel-composite coupling combination. The class utilizes passive roll stabilization for sea-keeping. Sensor and processing suites include the TACTICOS combat management system, multibeam surveillance radar, fire control tracking radar, and medium frequency active/passive hull-mounted sonar. Internal and external communications are managed through fiber optic networks and integrated satellite communication systems. Electronic warfare capabilities comprise electronic support measures, electronic countermeasures, and decoy launchers. Aviation facilities consist of a landing pad with an optional hangar. Primary armament includes anti-surface missiles, anti-air missiles, a main gun, and torpedo launchers.
Operational history includes the deployment of various missile systems. While export licensing for anti-ship missiles was reviewed in 2007 with Chinese alternatives considered, the vessels entered service with the Exocet system. KRI Sultan Iskandar Muda conducted a launch of the Block III variant in 2019. In November 2022, a modernization contract was signed between PT Len and Thales Nederland to refurbish the integrated mission systems across the class. This program includes the installation of the TACTICOS Baseline 2 combat management system and software-driven radar technology.
Frequently Asked Questions
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- AUG 302026 Updated Range speed recorded as the economical cruising speed
- APR 72026 Updated Description updated in a site-wide editorial pass
- JAN 182026 Updated Cost and based aircraft added; type, units and 6 more fields updated