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Songŏryu-class
File:Songoryu-class.png
Songŏryu I-class above, Songŏryu II-class below
Class overview
Builders: KSME
Operators: list error: <br /> list (help)
DSRA Anikatian People's Navy
Anikatia Anikatian Navy
Preceded by: Tarango-class
Succeeded by: Chongori-class
Built: 1966–1994
In service: 1968-Present
Completed: 53
Active: 12
Lost: 1
Retired: 39
Preserved: 0
General characteristics
Type: Submarine
Displacement:
  • surface – 4,380 / 5,410 / 6,850 t;
  • submerged – 6,080 / 7,120 / 7,350 t (Songoryu I / Songoryu II / Songoryu III)
Length: 103.5 m / 107.5 m (Songoryu I / Songoryu II, Songoryu III)
Beam: 10.8 m
Draft: 7.4 / 7.8 m (Songoryu I / Songoryu II, Songoryu III)
Propulsion:
  • 2 × Bulgakko BNR-75 nuclear reactors producing 75 MW (100,577 hp) each
  • 2 × Bulgakko P-SM1-400A steam turbines
  • 2 × Bulgakko E-TM1A-3B Electric cruise motors 1,480 shp (1,081 kW)
  • 2 × Daesungkhu & Namkoong DNE TG-2B turbogenerators 2,682 shp (2,000 kW)
  • 1 × Kyoungcho DPE F6M 617 shp (460 kW) emergency diesel engine set
  • 1 shafts, each with 7-bladed propellers / two 5-bladed propellers (Songoryu I, Songoryu II / Songoryu III)
Speed:
  • 12 knots (22 km/h) surfaced
  • 30-33 knots (55-61 km/h) submerged
Range: Unlimited, except by food supplies
Endurance: 70 / 80 / 90 days endurance (Songoryu I / Songoryu II / Songoryu III)
Test depth: 320–600 m (1,049–1,968 ft)
Complement:
  • Songoryu I: 79 crew (28 officers, 25 warrant officers, 26 enlisted)
  • Songoryu II: 86 crew (30 officers, 27 warrant officers, 29 enlisted)
  • Songoryu III: 94 crew (32 officers, 28 warrant officers, 34 enlisted)
Armament:
  • 6 × bow torpedo tubes
  • 24 torpedoes, mines or other tube-launched weapons like cruise missiles.

The Songŏryu-class submarine is the first Anikatian class of nuclear-powered submarines that were built by the DSRA. The official desgination by the Anikatian People's Navy was the Songŏryu-class, but the manufacturer designation of this class was Project 334; Songŏryu (송어류) means trout in the Anikatian language.

The Songŏryu-class was a double-hulled submarine and represented a significant advancement in hull streamling which allowed the design excellent high-speed performance compared to most contemporary designs. Although, this high-speed performance results in a noisier design than its contemporaries. Nonetheless, the design was quieter than previous Anikatian submarines and the later Songŏryu III class would be continuously improved during construction, as a result the final production models superior acoustic performance and remain in service with the Anikatian Navy.

History and development

Even before the first Tarango-class submarines had to be completed work on an all new larger nuclear-powered vessel as research and develop along with assistance from Estovnia sped up the nuclear program. The new class of submarine was to have a displacement of greater than 4,000 tonnes and diving depth of at least 300 m. Skills and knowledge learnt from the Tarango program fed into the new nuclear submarine development and designs were set for a shift to a single highly efficiency propeller setup over the older three shaft design to help reduce noise and improve hull streamlining. Further development was achieved in the shaping of the hull with a far more teardrop shaped hull as a result of improved metal production and welding techniques. The overall design was far larger to accommodate a newly developed steam turbine nuclear propulsion system.

The early Songŏryu-class submarines were considerably noisier than contemporary diesel or nuclear-powered submarines, despite the advanced streamlined hull, special low-noise variable-pitch propeller, and vibration dampening of main equipment. This was because the initial Anikatian reactors produced loud vibrations in exchange for higher performance. As a result of the early adoption of advanced nuclear technology the boat were hurriedly built by the DSRAs, who were anxious to catch up with Free World which had a clear lead in nuclear submarines. As a result, the reliability of the first Anikatian nuclear-powered submarines was relatively low and early Songŏryu-class submarines were often plagued with teething problems and accidents which threaten crew safety. The relatively short service life of the early steam generators in the main propulsion machinery caused an increase in the radioactivity levels in the second loop of the reactor after several hundred hours of reactor operation. The reliability of the steam generators greatly improved over the course of construction development, handling technical problems and training of crews, so by the Songŏryu III all issues had to be worked out.

Variants

  • Songŏryu I (Project 334): The baseline configuration, these were nuclear-powered submarines that first saw service in 1968; 6 were built. They had 6 torpedo tubes and carried 24 torpedoes, mines or other tube-launched weapons like cruise missiles.
  • Songŏryu II (Project 334A): Improved design, with increased length by 4 metres and higher displacement allowing greater diving depths, other improvements were new electronic equipment, improved sonar and a major step up in the reliability of the nuclear-power systems, they first saw service in 1970s ;15 were built. They had 6 torpedo tubes and carried 24 torpedoes, mines or other tube-launched weapons like cruise missiles.
  • Songŏryu III (Project 334D): Deep modernisation of the design, new electronic equipment, new twin-screw propeller setup for greater noise reduction, Minor hull redesigns to accommodate new equipment and weapons. The Songŏryu III saw the first implementation of the distinctive hydrodynamic housing pod for the towed sonar array housed on the rudder. Which would later appear on the newer Myongtae and Kalmaegi-class submarines. The type entered service in late 1970s; 32 were produced until 1994, 10 vessels remain in service and are being updated while a further 6 remain in reserve storage.
  • Chongori (Project 335): A highly advanced experimental single-ship class, this was essentially an all new submarine based on a modified Songŏryu III hull but produced using titanium on the inner hull. It was developed as an experiential single vessel to trial new technology for future nuclear submarines. Despite its prototype and experimental status, it was fully combat-capable. It was the first use of titanium on an Anikatian submarine which significantly reduced the weight of the vessel. As a result, the lightweight teardrop shaped hull was lined with rubber coating that enhanced the stealthy characteristics of the craft. The experience gained in the creation of this submarine, would later be put to use in creating the series production of the deep diving titanium-hulled Kalmaegi-class submarine. It also saw the pioneering use of an escape capsule in an Anikatian submarine. Which was fitted in the sail above these compartments to enable the crew to abandon ship in the event of an underwater emergency.

Units

Following is a list of the 53 submarines built for the DSRA.

Songŏryu-class
Number Shipyard Project Laid down Launched Decommissioned Status
Anikatian Naval Force S-46 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334 1966 1968 1994 Decommissioned for scrapping
Anikatian Naval Force S-47 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334 1967 1969 1994 Decommissioned for scrapping
Anikatian Naval Force S-48 Kyoungcho Shipbuilding & Marine Engineering Namsong Shipyard 334 1968 1969 1994 Decommissioned for scrapping
Anikatian Naval Force S-49 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334 1968 1969 1980 Sank after fire due to wiring short circuit
Anikatian Naval Force S-50 Kyoungcho Shipbuilding & Marine Engineering Namsong Shipyard 334 1969 1970 1996 Decommissioned for scrapping
Anikatian Naval Force S-51 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334 1969 1971 1998 Decommissioned for scrapping
Anikatian Naval Force S-52 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334A 1970 1972 1999 Decommissioned for scrapping
Anikatian Naval Force S-53 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334A 1971 1973 2001 Decommissioned for scrapping
Anikatian Naval Force S-54 Sunwoo Heavy Industries Hamgae Shipyard 334A 1972 1973 2001 Decommissioned for scrapping
Anikatian Naval Force S-55 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334A 1972 1974 2001 Decommissioned for scrapping
Anikatian Naval Force S-56 Kyoungcho Shipbuilding & Marine Engineering Namsong Shipyard 334A 1973 1974 2001 Decommissioned for scrapping
Anikatian Naval Force S-57 Kyoungcho Shipbuilding & Marine Engineering Namsong Shipyard 334A 1974 1975 2001 Decommissioned for scrapping
Anikatian Naval Force S-58 Sunwoo Heavy Industries Hamgae Shipyard 334A 1974 1976 2001 Decommissioned for scrapping
Anikatian Naval Force S-59 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334A 1975 1976 2001 Decommissioned for scrapping
Anikatian Naval Force S-60 Kyoungcho Shipbuilding & Marine Engineering Namsong Shipyard 334A 1975 1977 2001 Decommissioned for scrapping
Anikatian Naval Force S-61 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334A 1975 1977 2001 Decommissioned for scrapping
Anikatian Naval Force S-62 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334A 1976 1977 2001 Decommissioned for scrapping
Anikatian Naval Force S-63 Kyoungcho Shipbuilding & Marine Engineering Namsong Shipyard 334A 1976 1978 2001 Decommissioned for scrapping
Anikatian Naval Force S-64 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334A 1976 1978 2001 Decommissioned for scrapping
Anikatian Naval Force S-65 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334A 1977 1979 2001 Decommissioned for scrapping
Anikatian Naval Force S-68 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334A 1978 1980 2001 Decommissioned for scrapping
Anikatian Naval Force S-69 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 243D 1980 1981 2002 Decommissioned for scrapping
Anikatian Naval Force S-72 Sunwoo Heavy Industries Hamgae Shipyard 334D 1980 1981 2002 Decommissioned for scrapping
Anikatian Naval Force S-73 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334D 1980 1982 2002 Decommissioned for scrapping
Anikatian Naval Force S-74 Sunwoo Heavy Industries Hamgae Shipyard 334D 1981 1982 2002 Decommissioned for scrapping
Anikatian Naval Force S-76 Sunwoo Heavy Industries Chongnam Shipyard 334D 1981 1982 2003 Decommissioned for scrapping
Anikatian Naval Force S-78 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334D 1981 1982 2003 Decommissioned for scrapping
Anikatian Naval Force S-79 Sunwoo Heavy Industries Chongnam Shipyard 334D 1981 1983 2003 Decommissioned for scrapping
Anikatian Naval Force S-80 DN Manufacturing Industries Daegok Shipyard 334D 1982 1983 2004 Decommissioned for scrapping
Anikatian Naval Force S-82 Sunwoo Heavy Industries Chongnam Shipyard 334D 1982 1983 2004 Decommissioned for scrapping
Anikatian Naval Force S-83 Sunwoo Heavy Industries Hamgae Shipyard 334D 1982 1983 2004 Decommissioned for scrapping
Anikatian Naval Force S-84 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334D 1982 1984 2004 Decommissioned for scrapping
Anikatian Naval Force S-86 Sunwoo Heavy Industries Hamgae Shipyard 334D 1983 1984 2004 Decommissioned for scrapping
Anikatian Naval Force S-88 Sunwoo Heavy Industries Chongnam Shipyard 334D 1983 1985 2005 Decommissioned for scrapping
Anikatian Naval Force S-89 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334D 1983 1985 2005 Decommissioned for scrapping
Anikatian Naval Force S-92 Sunwoo Heavy Industries Chongnam Shipyard 334D 1983 1985 2005 Decommissioned for scrapping
Anikatian Naval Force S-93 Sunwoo Heavy Industries Chongnam Shipyard 334D 1984 1986 2005 Decommissioned for scrapping
Anikatian Naval Force S-94 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334D 1984 1986 - Laid up, awaiting scrapping
Anikatian Naval Force S-96 Kyoungcho Shipbuilding & Marine Engineering Namsong Shipyard 334D 1984 1986 - Laid up, awaiting scrapping
Anikatian Naval Force S-97 Sunwoo Heavy Industries Chongnam Shipyard 334D 1985 1987 - Laid up, awaiting scrapping
Anikatian Naval Force S-98 Sunwoo Heavy Industries Hamgae Shipyard 334D 1985 1987 - Laid up, plans to reactivate by 2017
Anikatian Naval Force S-120 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334D 1985 1987 - Laid up, plans to reactivate by 2017
Anikatian Naval Force S-121 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334D 1985 1987 - Laid up, plans to reactivate by 2017
Anikatian Naval Force S-122 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334D 1986 1987 - Active service, to undergo overhaul and modernisation
Anikatian Naval Force S-130 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334D 1986 1988 - Active service
Anikatian Naval Force S-131 Sunwoo Heavy Industries Chongnam Shipyard 334D 1987 1988 - Active service
Anikatian Naval Force S-132 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334D 1987 1989 - Active service, to undergo overhaul and modernisation
Anikatian Naval Force S-133 Sunwoo Heavy Industries Hamgae Shipyard 334D 1987 1989 - Active service
Anikatian Naval Force S-134 Kyoungcho Shipbuilding & Marine Engineering Namsong Shipyard 334D 1987 1989 - Active service
Anikatian Naval Force S-135 Kyoungcho Shipbuilding & Marine Engineering Eunchuol Shipyard 334D 1988 1990 - Active service, to undergo overhaul and modernisation
Anikatian Naval Force S-136 Sunwoo Heavy Industries Hamgae Shipyard 334D 1989 1991 - Active service
Anikatian Naval Force S-137 Kyoungcho Shipbuilding & Marine Engineering Namsong Shipyard 334D 1990 1992 - Active service
Anikatian Naval Force S-138 Sunwoo Heavy Industries Hamgae Shipyard 334D 1991 1994 - Active service

Operators

Most saw service in the Anikatian People's Navy.

 Anikatia
  • Anikatian Naval Force Anikatian Navy 10 Songŏryu III in active servie with a further 6 in reserve storage.
 DSRA

In popular culture

External links