Heroj (P-821) in the Porto Montenegro Museum.
|Builders:||Brodogradilište specijalnih objekata (BSO), Split, SR Croatia|
|Operators:||SFR Yugoslav Navy|
|Preceded by:||Sutjeska class|
|Succeeded by:||Sava class|
|In commission:||1968–late 1990s|
|Displacement:||614 tonnes (604 long tons) (surfaced)
705 tonnes (694 long tons) (submerged)
|Length:||50.4 m (165 ft)|
|Depth:||210 m (690 ft)|
|Propulsion:||2 × Mercedes diesels (1,600 hp (1,200 kW))
2 × electric motors (1,560 hp (1,160 kW))
|Speed:||15.3 kn (28 km/h; 18 mph) (surfaced, maximum)
9.8 knots (18 km/h; 11 mph) (submerged)
|Range:||4,100 nmi (7,593 km; 4,718 mi) at 10 knots (19 km/h; 12 mph)|
|Armament:||4 × 533 mm (21.0 in) torpedo tubes (6 bow)
10 torpedoes or 20 mines
The Heroj class (eng. Hero) was a class of diesel-electric attack submarines built for the Yugoslav Navy during the 1960s. The three strong class represented 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 Koncar 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 55 crew members.
|Name||Pennant number||Namesake||Builder||Laid down||Launched||Commissioned||Decommissioned||Fate|
|Heroj||P-821||Heroj||Brodogradilište specijalnih objekata,
Split, SR Croatia, SFR Yugoslavia
|1964||1967||1968||2005/2006||extant; Porto Montenegro museum.|
|Junak||P-822||Junak||1965||1968||1969||1997||scrapped in 1997|
|Uskok||P-823||Uskok||1966||January 1970||1970||1998/1999||scrapped in 2007|
- Gardiner, Robert (1995). Conway's All the World's Fighting Ships, 1947–1995. Naval Institute Press. ISBN 978-0-85177-605-7.
- Other sources
- "Napadne podmornice klase Heroj" [Heroj-class attack submarines] (PDF). Brodarski institut. Retrieved 13 March 2014.
- Freivogel, Zvonimir. "Podmorničarska tradicija na hrvatskom Jadranu" [Submarine tradition on the Croatian Adriatic]. Sušačka revija. Retrieved 1 February 2014.