The Heroj class were a group of submarines built for and operated by the Yugoslav Navy

Yugoslav Navy

The Yugoslav Navy was the navy of Yugoslavia. It was essentially a coastal defense force with the mission of preventing enemy landings along the Yugoslavia's rugged 4,000- kilometer shoreline or coastal islands, and contesting an enemy blockade or control of the strategic Strait of Otranto...

Design

These boats were designed in Yugoslavia and were second group of indigenous submarines. They had a number of improvements relative to the preceding Sutjeska class submarine

Sutjeska class submarine

The Sutjeska class were a group of submarines built for the Yugoslav Navy in the late 1950's.-Design:The design was done in Yugoslavia and Soviet sensors were used...

s, including an improved hull form optimised for underwater performance and more up to date Soviet radars.

Ships

3 Ships were built

Pennant number	Name	Builder	Laid down	Launched	Commissioned	Fate / Status
P821	Heroj	Uljanik Yard, Pula Pula Pula is the largest city in Istria County, Croatia, situated at the southern tip of the Istria peninsula, with a population of 62,080 .Like the rest of the region, it is known for its mild climate, smooth sea, and unspoiled nature. The city has a long tradition of winemaking, fishing,...	1964	1967	1968	Currently for sale at Tivat Arsenal, Montenegro. Heavy maintenance stopped during 2004, withdrawn from operational use
P822	Junak	Split Split (city) Split is a Mediterranean city on the eastern shores of the Adriatic Sea, centered around the ancient Roman Palace of the Emperor Diocletian and its wide port bay. With a population of 178,192 citizens, and a metropolitan area numbering up to 467,899, Split is by far the largest Dalmatian city and...  shipyard	1965	1968	1969	Withdrawn from operational use by RMVJ mid-90s and scrapped
P823	Uskok	Uljanik Yard, Pula Pula Pula is the largest city in Istria County, Croatia, situated at the southern tip of the Istria peninsula, with a population of 62,080 .Like the rest of the region, it is known for its mild climate, smooth sea, and unspoiled nature. The city has a long tradition of winemaking, fishing,...	1966	1970	1970	Withdrawn from operational use by RMVJ in 1998, Scrapped in Turkey 2007