This project is the research and development and construction of a 113,000-ton light environmentally friendly Aframax oil tanker. It belongs to the field of high-tech ship design and manufacturing engineering technology in the field of transportation engineering. It is a new ship type development and construction process research to meet market demand. Key project. Starting from the concepts of energy conservation, safety and green environmental protection, this project makes the project novel and has good practical value by studying the ship's line shape, propulsion system, subdivision design, structural optimization, noise, advanced construction technology, etc. The project level has been identified as internationally advanced by experts, and some research results have reached the internationally leading level. The key technologies that have been broken through in this project include: 1. CFD line shape optimization technology: Under the condition of meeting the main scale parameters, not only considering hydrodynamic performance, but also combining the characteristics of subdivision and general layout to optimize the line shape to reduce the total resistance of the ship while improving Propulsion efficiency;2. Structural lightweight design technology: By optimizing the structural form and conducting sufficient finite element calculation and evaluation on key typical nodes, the structural weight is reduced as much as possible and the deadweight is increased on the basis of ensuring the structural strength;3. Vibration and noise prediction and control technology: Through the comprehensive use of finite elements, boundary elements and energy spectrum methods, the vibration and noise of the whole ship are predicted and analyzed, and local areas that may generate large vibration and noise are optimized;4. Excellent EEDI level: The ship has met Phase III requirements ahead of schedule and meets CO2 emission requirements for the next five to ten years. Innovation points of this project: 1. The optimal design of low-drag linear and high-efficiency propulsion systems has achieved remarkable results, allowing the ship's EEDI to reach the third-stage indicator ahead of schedule;2. From the perspective of ship life safety, study the safety design method of the entire ship structure, taking into account the hull load prediction, total strength reserve and structural fatigue analysis methods under complex and changeable sea conditions;3. Master noise prediction skills to ensure that the new noise standards are met at the early stage of design; 4. The construction process was optimized by using various process analysis methods such as DAP, precision control, and full-process accessories. The segmented boring process was used for the first time, which shortened the dock cycle by more than 10 days. This project has obtained 5 utility model patents, and related technologies have been widely used in Afra ship types and other ship types, with 10 papers published. Related technologies have been industrially applied in Aphra ship types and other ship types. Economic benefits: Since 2015, the company has undertaken 6 113,000-ton Aframax and similar ships, with sales of RMB 2.013 million and economic benefits of RMB 1.6104 million. This ship not only brings economic benefits to our company, but also brings considerable economic benefits to upstream and downstream related industries. Due to the ship's leading fuel consumption level, the shipowner's operating costs have been further reduced. Its higher speed and greater loading capacity make its daily rent higher than that of similar ships. The operating profit has been improved, bringing considerable economic benefits to the shipowner. Social benefits: This ship is a light and environmentally friendly Afra oil tanker. It can meet the international community's requirements for the third stage of ship CO2 emission in advance and meet the nitrogen oxide emission requirements. It has low fuel consumption indicators. A series of environmental protection measures such as ballast water management systems have adapted to the requirements of social development and are of great social significance for energy conservation and emission reduction and reducing environmental pollution. This project provides strong support for the country's strategic idea of building China oil tankers and super fleets. The success of the project will not only bring a large number of jobs, but also bring a large number of orders to related industries and support the development of the domestic equipment industry. The project takes the lead in adopting the domestic WinGD W-6X62 mainframe, which strongly supports the industrial development of domestic WinGD mainframe.