C4iSR: Maritime

Indonesia restores damaged sonar on Diponegoro-class corvette

30 July 2018

The Indonesian Navy's Diponegoro (Sigma)-class corvette, KRI Frans Kaisiepo. Source: Damen

The Indonesian Navy (Tentara Nasional Indonesia Angkatan Laut: TNI-AL) has restored the hull-mounted sonar system of its Diponegoro (Sigma)-class corvette that ran aground in January 2015.

The vessel, KRI Frans Kaisiepo (368), ran aground while navigating the Surabaya Western Shipping Route (Alur Pelayaran Barat Surabaya, or APBS).

Frans Kaisiepo was on its way to the Java Sea to relieve sister ship KRI Sultan Hasanuddin (366) in search operations for downed Air Asia airliner QZ8501, a TNI-AL source told Jane's at the time.

Besides sustaining damage to its hull, the corvette’s Thales Kingklip hull-mounted sonar system was adversely affected in the grounding.

Thales has since restored the sonar's functionalities, and updated the ship’s operator console and signal processing systems. The company worked with an Indonesian industrial partner, PT Dharma Satya Nusantara (DSN), during the repairs as part of a technology transfer programme.

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    Type Naval Fire-Control System (FCS). Development In 2005, following a competitive procurement process, Kollmorgen Electro-Optical (acquired by L-3 Communications in February 2012 and now operating as L-3 KEO) was chosen to provide the US Navy (USN) with an EOSS as part of the CG-47