The Quebec class was the NATO reporting name of a class of diesel-electric
patrol submarines that were built in the Soviet Union. The Soviet designation
of this class was Project A615.
Quebec-class submarines were fitted with
two regular diesel engines and a third, closed-cycle diesel engine, which used
liquid oxygen to provide air-independent propulsion while the submarine was submerged.
Quebec class had a streamlined conning tower with a fixed snorkel housing at the
rear end. They were armed with four torpedo tubes in the bow, for which no reloads
were carried, and earlier boats also had a twin 25 mm anti-aircraft gun faired
into the forward end of the tower, making them some of the last submarines to
be constructed with deck guns.
The Quebec-class was plagued with problems
caused by liquid oxygen evaporation. Their endurance was limited to 10 days due
to continuous evaporation of the oxygen and lack of a re-liquefaction system,
and the propulsion system led to several serious incidents. In 1957 two submarines
were lost due to accidents caused by the oxygen system. M-256 suffered a fire
off Tallinn in the Baltic, which led to the loss of 35 men, while M-351 sank in
the Black Sea with no casualties. Other incidents caused oxygen-fueled flames
to burst out from the boats, which led to their crews to nickname them zazhigalka
Submarine M-299 laid down 19 September
1955 at the Shipyard No.196, Leningrad (yard No.705), launched 04 October 1956,
commissioned 30 November 1957 and was assigned to the Black Sea Fleet.
November 1960 submarine was placed in the reserve fleet. Reactivated 10 March
1965, but in 1970 was placed in the reserve fleet again.
was decommissioned and excluded from the lists of the Black Sea Fleet in 1978
| Displacement (tons):|
nmi (8,3 knots) |
nmi (8 knots)|
nmi (3,5 knots), 56 nmi (15 knots)|
|Propulsion:||1x900 hp 32D
diesel, 2x700 hp M-50P diesels, 1x100 hp PG-106 electric motor, 3 fixed pitch
533 mm bow torpedo tubes (4 K-45 torpedoes) - Tryum fire control system|
|Electronics:|| Flag surface
radar, RPN-47-03 radar, Tamir-5L sonar, Mars-16KIG noise detection sonar, GS-571