The Type 925 Dajiang with

NATO reporting name NATO reporting names are code names for military equipment from Russia, China, and historically, the Eastern Bloc (Soviet Union and other nations of the Warsaw Pact). They provide unambiguous and easily understood English words in a uniform manne ...

Dajiang, or 大江 in Chinese, meaning Great River, is a type of naval auxiliary ship belonging to the

People's Republic of China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

. Each ship is usually equipped with up to two

Type 7103 DSRV The People's Republic of China developed a class of 35-ton deep-submergence rescue vehicle (DSRV) for the People's Liberation Army Navy (PLAN). It was first tested in 1986 and operational in 1989. The DSRV may perform a rescue at depths up to . S ...

class

Deep Submergence Rescue Vehicle A deep-submergence rescue vehicle (DSRV) is a type of deep-submergence vehicle used for rescue of downed submarines and clandestine missions. While DSRV is the term most often used by the United States Navy, other nations have different design ...

s (DSRVs). The ship is designed to replace the first

People's Liberation Army Navy The People's Liberation Army Navy (PLAN; ), also known as the People's Navy, Chinese Navy, or PLA Navy, is the maritime service branch of the People's Liberation Army. The PLAN traces its lineage to naval units fighting during the Chinese ...

(PLAN)

submarine tender A submarine tender is a type of depot ship that supplies and supports submarines. Development Submarines are small compared to most oceangoing vessels, and generally do not have the ability to carry large amounts of food, fuel, torpedoes, and ...

PLANS Mount Tai, and the lead ship of the Dajiang class is the Changxingdao. The Type 925 is a

that can also be used as a

submarine rescue ship A submarine rescue ship is a surface support ship for submarine rescue and deep-sea salvage operations. Methods employed include the McCann Rescue Chamber, deep-submergence rescue vehicles (DSRV's) and diving operations. List of active subm ...

, 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

(ARS),

marine salvage Marine salvage is the process of recovering a ship and its cargo after a shipwreck or other maritime casualty. Salvage may encompass towing, re-floating a vessel, or effecting repairs to a ship. Today, protecting the coastal environment from ...

rescue ship (ASR),

(AS), and surface ship's tender. Two

s can be carried during

submarine A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely op ...

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 vehicle Unmanned underwater vehicles (UUV), sometimes known as underwater drones, are submersible vehicles that can operate underwater without a human occupant. These vehicles may be divided into two categories: remotely operated underwater vehicles (ROU ...

s (UUVs) in the Chinese inventory, including: * Mobile diving bell * QSZ-II submersible * 8A4 ROUVs * RECON-IV ROUVs * 7B8 ROUVs * Goldfish class ROUVs * HR-01 ROUV * HR-02 ROUV * JH-01 ROUV * SJT-5 ROUV * SJT-10 ROUV * SJT-40 ROUV * Sea Dragon-I ROUV * Sea Dragon-II ROUV *

Arctic class ARV The Arctic ( or ) is a polar region located at the northernmost part of Earth. The Arctic consists of the Arctic Ocean, adjacent seas, and parts of Canada (Yukon, Northwest Territories, Nunavut), Danish Realm (Greenland), Finland, Iceland, N ...

Explorer AUV Explorer (Tan Suo Zhe, 探索者) autonomous underwater vehicle (AUV) is a Chinese AUV developed in the People's Republic of China (PRC),first entering service in November 1994. It should not be confused with another two Anglo-American AUVs that sh ...

* WZODA AUV * CR-01 AUV * CR-01A AUV * CR-02 AUV *

Intelligent Water class AUV Intelligence (智水, Zhi Shui or Zhishui) class autonomous underwater vehicle (AUV) is a class of little known underwater vehicle developed bShipbuilding Engineering Institute (船舶工程学院)of Harbin Engineering University (HEU) for the Peo ...

* Submerged Dragon 1 AUV 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 powered by two MAN diesels producing delivered to the two

driveshaft A drive shaft, driveshaft, driving shaft, tailshaft (Australian English), propeller shaft (prop shaft), or Cardan shaft (after Girolamo Cardano) is a component for transmitting mechanical power and torque and rotation, usually used to connect ...

s. The ships were built by Hudong SY,

Shanghai Shanghai (; , , Standard Mandarin pronunciation: ) is one of the four direct-administered municipalities of the People's Republic of China (PRC). The city is located on the southern estuary of the Yangtze River, with the Huangpu River flow ...

. 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 Replacing the # 506 with the same name.

References

External links

China's Future Route to Maritime Dominance

* ttp://www.janes.com/defence/naval_forces/news/jni/jni010219_2_n.shtml Current submarine rescue services, Jane's Information Group {{Ship classes of the Chinese Navy, state=uncollapsed Deep-submergence vehicles Submarines of the People's Liberation Army Navy Auxiliary ships of the People's Liberation Army Navy Submarine rescue ships Auxiliary search and rescue ship classes Auxiliary depot ship classes

See also

References

External links