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Type 925 submarine support ship

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Class overview
BuildersHudong SY, Shanghai
Operators People's Liberation Army Navy
In servicecompleted in November 1979 for use[1]
In commissionfirst ship started construction in 1975[1]
Completed3
General characteristics
Displacement10,087 tons full
Length512 ft (156 m)
Propulsion2 MAN Diesels, 9,000 shp (6,700 kW), 2 shafts
Speedsurface - 20 knots (37 km/h)
Complement308
Aircraft carried2 Z-8 Super Frelon helicopters
Aviation facilitiesaft helicopter deck and hangars for 2 Z-8 Super Frelon helicopters

The Type 925 Dajiang with NATO reporting name Dajiang,[2][3][4][5] or 大江 in Chinese, meaning Great River, is a type of naval auxiliary ship belonging to the People's Republic of China.[2][3][4][5][6] Each ship is usually equipped with up to two Type 7103 DSRV class Deep Submergence Rescue Vehicles (DSRVs). The ship is designed to replace the first People's Liberation Army Navy (PLAN) submarine tender PLANS Mount Tai, and the lead ship of the Dajiang class is the Changxingdao. The Type 925 is a submarine tender that can also be used as a submarine rescue ship, and hence, it is designated as a submarine support ship (Qian-Ting Zhi-Yuan Jian, 潜艇支援舰) by Chinese.

Each ship has a crew of 308 sailors and is equipped with an aft helicopter deck and hangars for 2 Z-8 Super Frelon helicopters. These large multi role naval auxiliary ships are the most fexilible type in the Chinese navy, capable of performing a variety of tasks, including serving as a submarine rescue ship (ARS), marine salvage rescue ship (ASR), submarine tender (AS), and surface ship's tender. Two Type 7103 DSRVs can be carried during submarine rescue operations and they are handled by a large crane on the fore deck, though usually, only one Type 7103 DSRV is carried while the slot for the second is used for a Type 7103 training submersible, which is used to simulate stranded submarines in training exercises. The handling system of Type 7103 DSRV is also used for Sea Pole class bathyscaphes and Osprey class submersibles. With only slight modifications, Type 925 Dajiang class is capable of supporting all submersibles and Unmanned underwater vehicles (UUVs) in the Chinese inventory, including:

During the Chinese ICBM test in the early 1980s, one of the Type 925 Dajiang class was converted as missile instrumentation support ship and temporarily renamed as Yuanwang-3 (远望-3) to support the test, and after the conclusion of the test, the unit was converted back to its original role with the name consequently changed back.

With a displacement of 10,087 tons full, and a length of 512½ feet, this ship can reach a speed of 20 knots (37 km/h) powered by two MAN diesels producing 9,000 bhp (6,700 kW) delivered to the two driveshafts. The ships were built by Hudong SY, Shanghai. The Dajiang class submarine ship has three vessels. They are named as follows:

  • Changxingdao #121 (built in 1976)
  • Chongmingdao #302
  • Yongxingdao #506

A new more modern Type 925 class has also recently been built, comprising:

  • Yongxingdao 863[7][8][9] Replacing the # 506 with the same name.
Type NATO designation Pennant No. Name
(English) 		Name
(Han 中文) 		Commissioned Displacement Fleet Status
Type 925 submarine support ship (AS) Dajiang class Bei-Jiu (北救) 121 Changxing Island 长兴岛 November 1979 10087 t North Sea Fleet Active
Dong-Jiu (东救) 302 Chongming Island 崇明岛 1980s 10087 t East Sea Fleet Active
Nan-Jiu (南救) 506 Yongxing Island 永兴岛 1980s 10087 t South Sea Fleet Active

See also

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References

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  1. ^ a b Spiegel. "Dajiang Class (Submarine Rescue Ship)". Retrieved 2007-07-13.
  2. ^ a b "PLANS recognition guide 2018". July 16, 2018.
  3. ^ a b "PLANS recognition guide 2019". February 19, 2020.
  4. ^ a b "PLANS recognition guide 2020". February 19, 2020.
  5. ^ a b "PLANS recognition guide 2015". August 7, 2015.
  6. ^ sinodefence.com. "Fleet Support Ships". Archived from the original on 2007-07-15. Retrieved 2007-07-13.
  7. ^ YouTube, a Google company. YouTube.[dead link‍]
  8. ^ "War ship" (JPG). Retrieved 2024-02-07.
  9. ^ "China Military Online English Edition". eng.chinamil.com.cn. Archived from the original on 2014-04-29.
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