Ahn Yongbok-class submarine: Difference between revisions

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The Ahn Yongbok-class is a class of nuclear-powered, fast attack submarines (SSN) in service with the [[Royal Joseon Navy]]. The class was the intended successor to the {{wp|Sturgeon-class submarine|Kim Gyu-sik class}}, and design work began in 2010. A fleet of 45 submarines was to be built over a ten-year period, but that was reduced to 41 submarines.
The '''Ahn Yongbok-class submarine''' is a class of nuclear-powered, fast attack submarines (SSN) in service with the [[Royal Joseon Navy]]. The class was the intended successor to the {{wp|Sturgeon-class submarine|Kim Gyu-sik class}}, and design work began in 2010. A fleet of 45 submarines was to be built over a ten-year period, but that was reduced to 41 submarines.


==History==
==History==
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* {{Armed forces|Joseon}}
* {{Armed forces|Joseon}}
** {{naval|Joseon}}
** {{naval|Joseon}}
{{Template:The Great Kingdom of Joseon|state=collapsed}}
[[Category:The Great Kingdom of Joseon]]

Latest revision as of 12:16, 19 September 2024

Ahn Yongbok class
The KHMS Seo Il (SSN-121) underway
Class overview
Builders: Daewoo Shipbuilding & Marine Engineering
Operators:  Royal Joseon Navy
Preceded by: Kim Gyu-sik class
Cost: $ 1.5 billion per unit
Built: 2021-2032
In commission: 2023–present
Planned: 45
Completed: 41
Cancelled: 4
Active: 41
General characteristics
Type: Nuclear attack submarine
Displacement:
  • Surfaced: 8,600 tons
  • Submerged: 9,138 tons
Length: 353 ft (108 m)
Beam: 40 ft (12 m)
Propulsion:
  • 1 x KH&NP pressurized water reactor 220 MW (300,000 hp), HEU 93.5%
  • 1 x Secondary propulsion submerged motor
  • 1 x 2 steam turbines 57,000 shp (43 MW)
  • 1 x shaft
  • 1 x pump-jet propeller
Speed:
  • 20 knots (23 mph; 37 km/h) (silent)
  • 35 knots (40 mph; 65 km/h)
Range: Unlimited
Endurance: Only limited by food supplies
Test depth: 1,600 ft (490 m)
Complement: 120
Crew: 14 officers; 106 enlisted
Armament: 8 × 26.5-inch torpedo tubes, sleeved for 21-inch weapons(up to 50 NGAM-S/Mk 48 guided torpedo carried in torpedo room)

The Ahn Yongbok-class submarine is a class of nuclear-powered, fast attack submarines (SSN) in service with the Royal Joseon Navy. The class was the intended successor to the Kim Gyu-sik class, and design work began in 2010. A fleet of 45 submarines was to be built over a ten-year period, but that was reduced to 41 submarines.

History

Design

High speed and low noise

The Ahn Yongbok-class attack submarine was developed with the concept of high speed and low noise. Nuclear submarines boast superior performance in all aspects, including speed, range, and weapon-carrying capacity, compared to diesel-electric submarines. However, they have the disadvantage of relatively lower stealth. Particularly, when a nuclear submarine sails at high speed, the noise generated by the reactor is significant, reducing its stealth. In contrast, the Ahn Yongbok-class attack submarine is known to produce only about one-third the noise of the Kim Gyu-sik class when sailing at a silent speed of 20 knots. Additionally, by adopting a pump-jet propulsion system instead of a screw propeller, it is known to generate noise similar to that of diesel-electric submarines even at its top speed of 35 knots (about 65 km/h). Due to this remarkable stealth, the Ahn Yongbok-class attack submarine has earned the nickname “Assassin of the Sea.”

Strong hull durability and detection capability

The Ahn Yongbok-class submarine uses HY-100 high-strength steel and, thanks to its unique durability design, has a maximum diving depth of 600 meters. The Ahn Yongbok-class submarine has an integrated processing system that allows for the unified operation of submarine combat systems. The SONAR used to detect enemy submarines is also equipped with a side array sonar, enabling it to detect enemy submarines from all directions without any blind spots. This allows the Ahn Yongbok-class submarine to detect enemy submarines first and quickly launch efficient attacks. Additionally, the Ahn Yongbok-class submarine is equipped with 8 torpedo tubes, twice as many as the Kim Gyu-sik class submarine. It also uses hydraulic torpedo tubes with a rotating turbine pump to stealthily attack enemy ships or submarines. However, it does not have a separate Vertical Launch System(VLS).

Operator

 Joseon