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 which were licence-built versions of the British , 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.

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 into Indonesian territory and Captain Luis Dos Santos (Lusitania Expressos 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.

Ships Name Pennant number Namesake Previously Acquired Commissioned Status KRI Ahmad Yani 351 Ahmad Yani, an army general killed in the 30 September Movement 1986 1986 Active KRI Slamet Riyadi 352 Slamet Riyadi, an army lieutenant colonel killed in Fort Victoria, Maluku 1986 1986 Sunk as target KRI Yos Sudarso 353 Yos Sudarso a navy commodore killed in the Battle of Arafura Sea 1987 1987 Active KRI Oswald Siahaan 354 Oswald Siahaan, a lieutenant killed in at Sibolga Bay in 1948 1986 1988 Active KRI Abdul Halim Perdanakusuma 355 Halim Perdanakusuma an air vice-marshal killed in 1947 1989 1989 Active KRI Karel Satsuitubun 356 Karel Satsuit Tubun, a police officer killed in the 30 September Movement 1990 1990 Active

Modernisation All six frigates have had their steam turbine power plants replaced with marine diesel engines.

The frigates of the Ahmad Yani class are due to be replaced by the s (SIGMA PKR 10514); the first of which, Raden Eddy Martadinata (331), was commissioned on 7 April 2017.

See also List of active Indonesian Navy ships Equipment of the Indonesian Navy

References