The Indonesian Navy (Indonesian: Tentara Nasional Indonesia-Angkatan Laut, TNI-AL) was founded on 10 September 1945. Its role is to patrol Indonesia's lengthy coastline, to enforce and patrol the territorial waters and Exclusive Economic Zone (EEZ) of Indonesia, to protect Indonesia's maritime strategic interests, to protect the islands surrounding Indonesia, and to defend against seaborne threats.
The Indonesian Navy is headed by a Chief of Staff of the Navy (Kepala Staf Angkatan Laut – Kasal). The Indonesian Navy is strengthen by three major fleets known as «Armada» which are Komando Armada I (1st Fleet Command) located in Jakarta, Komando Armada II (2nd Fleet Command) located in Surabaya, Komando Armada III (3rd Fleet Command) located in Sorong, and one Military Sealift Command (Komando Lintas Laut Militer). The Navy also heads the Marine Corps.
All commissioned ships of the TNI-AL have the prefix KRI, standing for Kapal Republik Indonesia (Republic of Indonesia Ship).