Port number 864 is "Ocean Island" belongs to the 926 type submarine rescue ship
The main task of the 926 type submarine rescue ship is the implementation of submarine rescue operations on the wrecked submarine to rescue the submarine, the implementation of various types of diving duties and to assist in salvage operations, rescue of wrecked surface ships and rescue of people in the water and so on.
The first ship, the 864 "Ocean Island", was commissioned in early 2010, and the other two are the 865 "Liugong Island" and 867 "Changxing Island".
The Type 926, which displaces 9,500 tons, has a stern winch that can lower a lifeboat to a depth of 300 meters, allowing it to rescue up to 18 crew members at a time from a submarine. The winch is also capable of maneuvering the new LR-7 miniature lifesaving submarine.
The equipment consists of hydroacoustic equipment, diving equipment, rescue equipment, air stations, and real-time displays of diving rescue operations.
Hydroacoustic equipment: 1 set of side-scan sonar, used to detect the seabed wrecks / boats and terrain, 1 set of communication sonar, used for underwater communication with the submarine, ranging and the submarine's active identification of the enemy and I. 1 set of dive operation observation and command system, consisting of panoramic scanning sonar and localization sonar, used for detection of the underwater target and the surrounding environment, display, tracking and guidance to direct the underwater submarine for underwater operations. underwater operation. The localization sonar can command and track multiple targets at the same time. 1 set of Doppler acoustic current meter is used to measure the sea currents around the ship to provide hydrological reference for various underwater rescue operations.
Diving equipment: including SS-300 meters saturation diving system, 100 meters open diving bell system, 4 sets of conventional diving equipment and 2 sets of medical pressurization cabin.
Rescue equipment: the deep-diving lifeboat can transfer people into the cabin from the wrecked submarine through the hemispherical pressure-resistant transfer device mounted on the flange of the lifeboat, and then directly out of the cabin under atmospheric pressure after hoisting onto the ship. Internal pressure ≤ 0.5 MPa state, docking transfer to the life-saving pressurized compartments for depressurization (stern winch device can be LR-7 liferaft lowering and control to a depth of 300 meters underwater, a time from the submarine to save 18 crew members + 3 members of the section. LR-7, LR-5 upgrade, weighing 26.5 tons, can be submerged to a depth of 500 meters). 1 set of deep-diving lifeboat stowage and release device. 1 set of operational remotely controlled 1 set of operational remote-controlled submersible (underwater robot), with the ability of movement, search, observation, and assistance in salvage operations. 1 set of 30-ton crane on the starboard side of the transom. High and medium pressure air connectors on both sides of the main deck are used to provide high and medium pressure air to the wrecked submarine, and electric connectors are used to provide emergency power to the wrecked submarine signal buoy. 4 winches are used for dive aid and conventional diving operations.
Gas station: helium-nitrogen-oxygen system can provide the required gas mixture for the 300-meter saturation diving system, 100-meter open diving bell, medical pressurized cabin, life-saving pressurized cabin group, conventional diving equipment, infirmary and other parts of the gas supply. There are 740 gas cylinders, 200 oxygen cylinders, 40 nitrogen cylinders and 204 mixed gas cylinders. In order to improve the utilization rate of the gas in the cylinders, two oxygen filling pumps and two diaphragm compressor sets are configured for concurrent bottles.
Diving rescue operation real-time display device: the command center through the local area network integrated integrated navigation system, deep diving lifeboat, operation type remote control submersible, 300 meters saturated diving system, open diving bell and other diving rescue operation equipment and the state of the ship and its access to the external information, fusion processing to display the situation of the diving rescue operation process and the scene of the video image, for diving rescue operation command to provide the basis for decision-making. Power positioning system: it develops from single mooring positioning to mooring positioning and power positioning. It can be used for all-round positioning in 4 levels of sea state and below 2 knots of water current, and has the advantages of rapid and precise positioning and fast deployment of operation site.