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| Material | Steel, pressure hull thickness 25-30 mm. |
| Max diving depth | secret but said to be around 500 feet |
| Length | 75.2 meters / 248 feet |
| Beam | 6.3 meters |
| Draft | 3 meters in fore, 4.8 in aft. |
| Displacement | 1050 tons surfaced, 1350 tons submerged. |
| Main engine | 2 x 37-D diesels, 2000 bHp each. Diesel-electric running. Smaller 150 kW electric engines for creep drive. |
| Cruising speed |
18.5 knots (34.3 km/h) surfaced
13 knots (24 km/h) submerged
7 knots (13 km/h) while using the snorkel
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| Bunkers | Diesel - 120 000 litres |
| range | 12-15 000 nautical miles.When sailing, the vessel could be submerged for three days in a row |
| Accomodations | crew of 56 on board. One shift sleeping and one on duty.
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| Hull |
The vessel is divided into seven water tight sections:
- Forward torpedo room
- living areas/ battery room
- aft torpedo room/living quarters
- control room
- living quarters
- galley
- engine/battery room
The mess has about 40 table-seats |
| armament |
12 × torpedoes or 22 × mines
four 530 mm (21 in) torpedo tubes in the bow
two 530 mm (21 in) torpedo tubes in the stern.
Whiskey I - twin 25 mm guns in conning tower
Whiskey II - twin 57mm guns and twin 25mm guns
Whiskey III - guns removed
Whiskey IV - 25mm guns - fitted with snorkel
Whiskey V - no guns - streamlined conning tower and snorkel |
| Electronics |
Radar complex RLK-101 «Albatros» (from 1958),
surface radar «Flag»,
reconnaissance radar «Anker» (then «Nakat»), «Fakel-MO-1» IFF (then «Khrom-K»), RPN-47-03 (then ARP-53),
sonar «Tamir-5L» (then «Plutoniy»),
noise detection sonar «Mars» (then MG-10 «Kola», then «Fenix»),
sonar MG-200 «Arktika» (from 1954 on S-154),
special sonar MG-15 «Sviyaga» (from 1957),
underwater communication system «Yakhta» (from 1959 on S-345, 378)
| Exports |
4 - Albania
2 - Bulgaria
5 - China
7 - Egypt
14 - Indonesia
4 - North Korea
4 - Poland
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