Heroj class submarine
Heroj (P-821) in the Porto Montenegro Museum.
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| Class overview | |
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| Builders: | Brodogradilište specijalnih objekata (BSO), Split, SR Croatia, SFR Yugoslavia |
| Operators: | SFR 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.
The boats measured 50.40 m (165 ft 4 in) in length with a hull diameter of 6.68 m (21 ft 11 in). Surfaced they displaced 614 t (604 long tons) and 705 t (694 long tons) while underwater. The diesel-electric drive consisted of two Mercedes diesel generators and single Končar electric motor mounted on a single shaft. This enabled them a maximum speed of 15.3 knots (28.3 km/h; 17.6 mph) underwater and 9.8 knots (18.1 km/h; 11.3 mph) when surfaced. Travelling underwater using a snorkel at a speed of 10 knots (19 km/h; 12 mph), the boats had a range of 4,100 nmi (7,600 km; 4,700 mi). Diving depth was 210 m (689 ft 0 in). The boats were manned by a complement of 28 crew members.
Armament of the class consisted of four 533 mm (1 ft 9.0 in) torpedo tubes used for launching up to six SET-65E active/passive homing torpedoes or deploying up to twelve naval mines instead. The boat's sensor suite included a "Stop Light" radar warning receiver, a "Snoop Group" surface search radar and a Thomson Sintra Eledone hull mounted sonar.
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