The class was built for the needs of the Yugoslav Navy on the Danube river, and was also sold to Hungary and Iraq during the 1970s and '80s.

[1] Fifteen ships were built for the Yugoslav Navy and export customers from 1976 to 1980.

Today three, "Óbuda", "Dunaújváros", and "Dunaföldvár", are still operated by HDF 1st EOD & River Flotilla Battalion.

All survived both the Iran-Iraq War and Operation Desert Storm, although they were largely inactive after 1991.

Two were sunk during the 2003 invasion of Iraq and the third was captured in a damaged state by British soldiers and scrapped.