 Heroj (P-821) in the Porto Montenegro Museum.
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| Class overview | |
|---|---|
| Builders | Brodogradilište specijalnih objekata (BSO), Split, SR Croatia, SFR Yugoslavia |
| Operators |  Yugoslav Navy |
| Preceded by | Sutjeska class |
| Succeeded by | Sava class |
| Built | 1964–1970 |
| In commission | 1968–late 1990s |
| Completed | 3 |
| General characteristics | |
| Displacement |
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| Length | 50.4 m (165 ft) |
| Depth | 210 m (689 ft 0 in) |
| Propulsion |
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| Speed |
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| Range | 4,100 nmi (7,593 km; 4,718 mi) at 10 knots (19 km/h; 12 mph) |
| Complement | 28 |
| Armament |
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The Heroj class (English: Hero) was a class of diesel-electric attack submarines built for the Yugoslav Navy during the 1960s. The three strong class was the second generation of domestically built submarines, representing a significant improvement compared to the earlier Sutjeska class. Built at the Brodogradilište specijalnih objekata (eng. Special objects shipyard) in Split, the new class featured a streamlined hull design and four bow facing torpedo tubes that could also be used for minelaying.
With the start of the Croatian War of Independence all three boats were relocated from the Lora Naval Base to Montenegro where they were commissioned with the SR Yugoslav Navy. The last two boats of the class, Junak and Uskok, were decommissioned during the 1990s and scrapped. Heroj was decommissioned in 2004 and after restoration laid up at the Porto Montenegro Museum in 2013.