The Mornar class consisted of two large patrol boats[a] built for the Yugoslav Navy (Serbo-Croatian: Jugoslavenska ratna mornarica – JRM) by the Tito's Shipyard in Kraljevica during the late 1950s and early 1960s.

The boats were based on the Udarnik (PBR-581), a French-built Le Fougueux-class submarine chaser acquired in 1956.

[1][b] The class was based on the Udarnik (PBR-581), a French-built submarine chaser of the Le Fougueux-class, which was acquired by Yugoslavia in 1956.

Both boats were modernized during 1970/73 at the "Sava Kovačević" Naval Repair Yard in Tivat; their 76 mm guns were removed and four five-barrelled Soviet-built RBU-1200 were installed along with a Tamir-11 sonar.

[2] The boats enjoyed a long, albeit uneventful, career in the Yugoslav Navy and both were deleted in 1992.