Diponegoro (SIGMA 9113)

The Diponegoro-class corvettes are a series of multi-role vessels built for the Indonesian Navy, based on the SIGMA 9113 design. These corvettes are equipped for anti-surface, anti-air, and anti-submarine warfare, featuring a modern combat system and weapon suite.

Developed in the early 2000s to modernize the Indonesian Navy's aging fleet and secure its vast archipelagic waters, the SIGMA 9113 design was contracted to the Dutch shipbuilder Damen Schelde Naval Shipbuilding. The lead vessel of the class, KRI Diponegoro (365), was commissioned into active service in July 2007, followed by three sister ships by 2009. These vessels have been frequently deployed for international maritime security operations, including multiple rotations with the United Nations Interim Force in Lebanon (UNIFIL) Maritime Task Force. Today, the class remains a cornerstone of Indonesia's naval defense, paving the way for the acquisition of larger, more advanced guided-missile frigates.