Ahmad Yani-class frigate
Class of Indonesian warships
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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 which were licence-built versions of the British Leander class, Unlike its predecessors, this ship has been extensively modernized and modified by the Indonesian Navy since the 2000s, so its performance is not the same as the original.
Four Ahmad Yani-class frigates sailing together at the 2025 Navy Sailing Pass | |
| Class overview | |
|---|---|
| Name | Ahmad Yani class |
| Builders | |
| Operators |  Indonesian Navy |
| Preceded by | Martha Khristina Tiyahahu class |
| Succeeded by | Martadinata class |
| Subclasses | Van Speijk class |
| Built | 1963–1968 |
| In service | 1986–present (Indonesian Navy) |
| Completed | 6 |
| Active | 5 |
| Retired | 1 |
| General characteristics | |
| Type | Frigate |
| Displacement | 2,200 tons standard, 2,850 tons full load |
| Length | 113.4 m (372 ft 1 in) |
| Beam | 12.5 m (41 ft 0 in) |
| Draught | 5.8 m (19 ft 0 in) |
| Propulsion | |
| Speed |
|
| Range | 4,500 nmi (8,300 km; 5,200 mi) at 12 kn (22 km/h; 14 mph) |
| Complement | 180 |
| Sensors & processing systems |
|
| Armament |
|
| Aircraft carried | 1x NBO-105C |
| Aviation facilities | Hangar |
Operational history
In 1992, KRI Ki Hajar Dewantara, along with KRI Yos Sudarso and KRI Teluk Banten intercepted the Portuguese ship Lusitania Expresso in East Timor. Col. Widodo, deputy assistant of the Indonesian Navy´s Eastern Fleet, told Radio Republik Indonesia from aboard the Indonesian warship KRI Yos Sudarso that the ferry entered Indonesian waters at 5:28 a.m. local time on March 11, 1992. At 6:07, the Lusitania Expresso had travelled two to three nautical miles (3.7 to 5.6 km; 2.3 to 3.5 mi) into Indonesian territory and Captain Luis Dos Santos (Lusitania Expresso's captain) was ordered to leave immediately. Col. Widodo said the Portuguese ship captain obeyed the order and turned his ship around and headed back to sea.[2]
Ships
| Name | Pennant number | Namesake | Previously | Acquired | Commissioned | Status |
|---|---|---|---|---|---|---|
| KRI Ahmad Yani | 351 | Ahmad Yani, an army general killed in the 30 September Movement | Tjerk Hiddes | 1986 | 1986 | Active |
| KRI Slamet Riyadi | 352 | Slamet Riyadi, an army lieutenant colonel killed in Fort Victoria, Maluku | Van Speijk | 1986 | 1986 | Sunk as target |
| KRI Yos Sudarso | 353 | Yos Sudarso a navy commodore killed in the Battle of Arafura Sea | Van Galen | 1987 | 1987 | Active |
| KRI Oswald Siahaan | 354 | Oswald Siahaan, a lieutenant killed in at Sibolga Bay in 1948[3] | Van Nes | 1986 | 1988 | Active |
| KRI Abdul Halim Perdanakusuma | 355 | Halim Perdanakusuma an air vice-marshal killed in 1947 | Evertsen | 1989 | 1989 | Active |
| KRI Karel Satsuitubun | 356 | Karel Satsuit Tubun, a police officer killed in the 30 September Movement | Isaac Sweers | 1990 | 1990 | Active[4] |
Modernisation
All six frigates have had their steam turbine power plants replaced with marine diesel engines.[5]
The frigates of the Ahmad Yani class are due to be replaced by the Martadinata-class frigates (SIGMA PKR 10514); the first of which, Raden Eddy Martadinata (331), was commissioned on 7 April 2017.[6]