Recently, Chongqing Changhang Dongfeng Co., Ltd., a subsidiary of the China Changjiang Shipping (Group) Corporation, has successfully completed the construction of a maritime patrol boat, the 31518 patrol boat. Its good performance and appearance have been well-received by leaders of Chongqing Municipal Government, Chongqing Jiaotong University, and Changjiang Maritime Affairs Bureau. Highly praised.
In recent years, Chongqing Changhang Dongfeng Co., Ltd. has been actively building the "four bases" for shipbuilding in Chongqing (export ships, 10,000-ton ships, special ships, and foreign exchange earning bases). It has continuously explored the construction market for special ships and successfully built a more advanced domestic one. Public security fireboats, double-floating cranes for port operations, barges, etc., have established a good image in the construction of special ships. Last year, it actively undertook the construction of a high-speed sea patrol boat with a steel-aluminum hybrid structure with high technical content and relatively difficult construction.
The sea cruiser built this time has a total length of 34.6 meters, a width of 5.2 meters, a depth of 2.3 meters, a design draught of 1.15 meters, a steel hull, and an aluminum alloy superstructure. The ship is equipped with a GPS global positioning system, radar, satellite communications, and wireless The modern network-assisted life-saving equipment such as the network, video surveillance system, and gas expansion life-saving valve is the first high-speed steel-aluminum hybrid vessel built on the base of the Three Gorges reservoir area after its formation.
The construction of the sea patrol boat took advantage of Chongqing's cooperation in technological innovation projects between Changhang Dongfeng and Chongqing Jiaotong University to study the “Aluminum alloy ship manufacturing process research and industrialization†and creatively solved the aluminum alloy shipbuilding industrialization technology. Bottleneck problem, successful use of aluminum alloy ship welding technology and deformation control technology, modular production technology, hull component processing and forming technology, high angle high power axial propulsion device installation technology, vibration damping, noise insulation, new materials and other advanced technologies The performance is superior, the speed is 37km/n, the speed is 3km higher than the design speed, the noise of the conference room is controlled within 64 decibels, the design index is reduced by 6 decibels, and the ship's cruise rescue capability is greatly improved.
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