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Type 813 ocean-going electronic technology reconnaissance ship
Xiangyanghong 21, Ocean No. 13.

The "Neptune" number 852 is a Type 813 electronic reconnaissance ship. 852 Neptune was once named Xiangyanghong 21 or Ocean No. 13. Although the ship received the name of Xiangyanghong like other oceanographic survey ships of the same class, it was known as V350 or NANDIAO 350 in the PLA Navy. Operated by the PLA South Sea Fleet based at Zhanjiang, Xiangyanghong 21 was the PLA Navys first electronic surveillance ship with ocean operation capability. It has now withdrawn from the Navy and is delivered to the Marine Police. The current number is the Marine Police 3469. Confusingly, A new 852 "Neptune" Type 815 electronic reconnaissance ship in now in the Chinese Navy.

Like other units of the Chinese Navy, the early days of the Chinese naval reconnaissance ship also had a very strong Soviet trace. At the earliest, when the Chinese navy performed such reconnaissance missions, it used frequent camouflaged ocean-going fishing vessels to perform such missions. However, limited by the platform, ocean-going reconnaissance fishing boats cannot install high-performance, advanced performance monitoring equipment, and in many cases, the concealment of ocean-going fishing boats is not as good as expected. Therefore, in the 1970s, the Chinese Navy opened the development of the first generation of specialized electronic reconnaissance ships.

In October 1976, according to the State Council, the Central Military Commission and the State Council approved the Electronic Confrontation and Radar Management Leading Group "Proposal on the Development Policy and Main Tasks of Electronic Countermeasure Radar". In October 1976, it was determined to select the type 645 marine comprehensive survey ship type, and modify the design according to the requirements of electronic technology reconnaissance. Room 2 of 708 Institute did design work from August 1977 to September 1980. All the design drawings were completed in several stages, including initial design, initial design modification, construction design and construction design modification. Shanghai Hudong Shipyard built the ship from September 1980 to September 1982 and named Xiangyanghong No. 21. It was tested in September-October 1982, delivered in November 1982, and professional equipment was tested in March-April 1983, and served in the South China Sea Fleet.

The ship was completed in September 1982 and was named as: Xiangyanghong No. 21. It has now withdrawn from the active service of the Navy. It has been used for name: Ocean No. 13, Ocean No. 13, 852, Haijian 169. It is later a 3469 ship. Since all kinds of electronic reconnaissance vessels may be under the banner of various civil institutions, or disguised as various types of vessels such as fishing boats, Marine Police 3469 may still be engaged in its old business - electronic intelligence reconnaissance.

The ship is the first ocean-going electronic technology reconnaissance ship designed and built by China and equipped with all the equipment. The hull structure is reinforced according to the Class B ice area of China's steel ship construction standard; the stability meets the requirements of the Class I navigation zone of China's sea ship stability specification, and it met the calculation of the 12 class wind (wind speed 53 m / s) Wind capacity; a total of 10 sets of various reconnaissance equipment.

The ship adopts a high-floating flat-deck ship type with good seakeeping resistance, and its hull has a large internal space and strong sustainability. From pictures, the modified reconnaissance ship is higher than the 645 type survey ship, and the mast is raised to improve the interception of radio waves. The main and front masts are also equipped with signal direction finding and interception. system. At the same time, the ship has also added a mast for installing the signal reconnaissance system, thereby realizing the reconnaissance coverage of the full-frequency communication system including low frequency to high frequency and even high frequency. The service of the modified reconnaissance ship greatly improved the intelligence gathering ability of the Chinese navy.

Because of its large range of activities and long duration, it can reach the other side of the sea for reconnaissance, so it has a high intelligence gathering capability through its related reconnaissance system. The strategic and tactical electromagnetic information of potential threats and sensitive areas can be obtained. Through long-term accumulation and analysis, the target electromagnetic database of relevant regions and objects can be established, and the electromagnetic situation and radar system layout of relevant regions can be clarified. The changes and intentions of its combat capability provide the basis for the commanding agency to make relevant decisions. At the same time, these data are also the material basis for the implementation of electronic interference, anti-radiation strikes and communication confrontation during wartime. More suitable for retrofitting reconnaissance ships.

The vessel has a large range of activities and a long duration. It can reach the other side of the sea for reconnaissance, so it has a high intelligence gathering capability. Through its related reconnaissance system, it can obtain potential threats and strategic and tactical electromagnetic information in sensitive areas. Accumulation of time, analysis and establishment of the target electromagnetic database of relevant regions and objects, can understand the electromagnetic situation and the arrangement of the radar system in relevant areas, analyze the changes and intentions of its operational capabilities through this information, and provide the basis for the decision-making organs to make relevant decisions. At the same time, these data are also the material basis for the implementation of electronic interference, anti-radiation strikes and communication confrontation during wartime. Only one 813-type electronic reconnaissance ship was built. According to public reports, in 2009, the ship participated in the famous "Impecable" incident, which is one of the five Chinese vessels that contain the "Impecable" intelligence reconnaissance ship.

Although the 813 electronic reconnaissance ship has better performance, its reconnaissance equipment is relatively simple. It is only equipped with a radio signal reconnaissance system, and it is not equipped with acoustic and optical systems. Therefore, the scope of use is limited. At the same time, due to the large tonnage of the ship and the high cost, considering the adjustment of the national economy and the reduction of the national defense budget at that time, it is difficult to build and carry out corresponding improvement design in a short period of time.

Chinese name 852 Neptune
TypeReconnaissance Ship
Main dimensions 112.22 meters long,
design water line length 102 meters,
width 15.2 meters,
depth 8.2 meters,
draft 5.5 meters.
Displacement 4590 tons full load
engine two 9ESDZ43/82B medium and low speed diesel engines,
rated power 3308 kW (4,500 hp) Speed ??200 rpm
Maximum speed 19 knots
Endurance 12,000 nautical miles / 17 knots
Compilation 150 people
Self-sustaining power 45 days

Xiang Yang Hong 21 Xiang Yang Hong 21 Xiang Yang Hong 21 Xiang Yang Hong 21 Xiang Yang Hong 21



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Page last modified: 23-10-2019 18:33:21 ZULU