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ROKS Dosan Ahn Chang-ho (SS-083)


Diesel-Electric Ballistic Missile Submarine


South Korea | 2020



"ROKS Dosan Ahn Chang-ho SS-083 forms the lead ship of a new indigenous South Korean Navy diesel-electric attack submarine."

Power & Performance
Those special qualities that separate one sea-going vessel design from another. Performance specifications presented assume optimal operating conditions for ROKS Dosan Ahn Chang-ho (SS-083).
Diesel-electric low-noise powerplant arrangement driving single shaft at stern; 4 x Bumhan Industry PH1 PEM fuel cells developing 200 horsepower each.
Propulsion
12.0 kts
13.8 mph
Surface Speed
20.0 kts
23.0 mph
Submerged Speed
10,002 nm
11,510 miles | 18,524 km
Range
Structure
The bow-to-stern, port-to-starboard physical qualities of ROKS Dosan Ahn Chang-ho (SS-083).
50
Personnel
Complement
273.9 ft
83.48 meters
O/A Length
31.5 ft
9.60 meters
Beam
25.0 ft
7.62 meters
Draught
Armament
Available supported armament and special-mission equipment featured in the design of ROKS Dosan Ahn Chang-ho (SS-083).
6 x 533mm torpedo tubes (supporting "Tiger Shark" torpedoes and "Harpoon" anti-ship missiles).
1 x 6-cell Vertical Launching System (VLS) housing cruise / ballistic land-attack missiles.
Ships-in-Class (4)
Notable series variants as part of the ROKS Dosan Ahn Chang-ho (SS-083) family line as relating to the Dosan Ahn Chang-ho-class group.
ROKS Dosan Ahn Chang-ho (SS-083); ROKS Son Byong-hi (SS-085); ROKS Yo Dong-nyeong (SS-086); ROKS Lee Bong-chang (SS-087)
Authored By: Staff Writer | Last Edited: 04/07/2020 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

The Republic of Korea Navy (ROKN) is planning on nine boats to make up its new Dosan Ahn Chang-ho-class attack submarine. The four boats - SS-083, SS-085, SS-086, and SS-087 - are being constructed through the efforts of Daewoo Shipbuilding & Marine Engineering (DSME) and Hyundai Heavy Industries (HHI). Building began in 2016 and continues as of this writing (2020).

The lead-ship of the class is ROKS Dosan Ahn Chang-ho (SS-083) which was built by DSME and laid down on May 17th, 2016. She was launched to sea on September 14th, 2018 and remains in active testing (2020). The vessel will be followed by ROKS Son Byong-hi (SS-085), ROKS Yi Dong-nyeong (SS-086), and ROKS Lee Bong-chang (SS-087). The former two are under construction with the latter planned. ROKS Dosan Ahn Chang-ho is expected to be commissioned sometime in 2020.

The class is the culmination of an initiative by the South Korean navy service to produce some twenty-seven attack boats over the course of 35 years beginning in the mid-1990s. With each successive design, more and more locally-sourced technology solutions are being implemented to make a more wholly South Korean product. The boats are also the largest ever undertaken by local industry making them a point of pride for the nation.

As designed, the class has a surfaced displacement of 3,358 tons and a submerged displacement of 3,705 tons. Dimensions include a running length of 83.5 meters, a beam of 9.6 meters, and a draught of 7.62 meters. Power is a diesel-electric arrangement involving 4 x Bumhan Industry PH1 PEM fuel cell systems developing 150 kW each driving a single, low-noise propeller at the rear in typical fashion. Acoustic dampening is used where possible to maintain stealthiness for the boat.

Performance figures include a maximum underwater speed of 20 knots and a top-side speed of 12 knots. Range is 10,000 nautical miles which will help the service maintain protection of the vast South Korean coastline.

The boat's profile is conventional with a blunt, rounded nose, tubular hull, and tapered aft section. the hull sides are noticeably bulged and the conning tower sits ahead of midships. The tower is home to the dive planes as well as the required collection of periscopes, sensors, and communications masts. The tail section of the boat incorporates the multi-bladed propeller unit as well as a cruciform tailplane arrangement.

Aboard is a complement of fifty personnel - making for one relatively compact attack submarine.

Armament includes 6 x 533mm bow-facing torpedo tubes supporting the "Tiger Shark" torpedo fasmily as well as the submarine-launched "Harpoon" anti-ship missile. Beyond this is are six Vertical Launching Systems (VLSs) embedded aft of the conning tower and these house land-attack cruise missiles as well as ballistic missiles as needed.

The series is being constructed across two distinct "batches" known simply as "Batch-I" and "Batch-II". ROKS Dosan Ahn Chang-ho is covered by the former while the remaining three boats are expected to include several improvements to broaden their tactical capabilities - namely in ballistic missile defense and anti-submarine systems to counter the North Korean threat. The result will be a lengthening of the hull by six meters as well as an increase to the VLS cell count from six to ten tubes as well as greater implementation of South Korean technology.

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Operators
Global operator(s) of the ROKS Dosan Ahn Chang-ho (SS-083). Nations are displayed by flag, each linked to their respective national naval warfare listing.
National flag of South Korea

[ South Korea ]
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