KRI Sorong (911) was the only ship of her type, built in Yugoslavia.

KRI Sorong's main purpose was to provide support during amphibious operations and serve as a tanker.

Her midship jackstay rig help to transfer materials during UNREP.

Sorong was unarmed most of the time but she has 2 machine guns pintles for self defense.

Sorong made history because she was part of the Combat Team for an amphibious landing operation to seize the city of Dili in East Timor on 6 December 1975, part of the Indonesian invasion of East Timor from 1975 to 1976.