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About Journal
Founded in 1979, Monthly
Governed by:
China State Shipbuilding Corporation Limited (CSSC)
Sponsored by:
Shanghai Marine Equipment Research Institute (SMERI), Chinese Society of Naval Architects and Marine Engineers (CSNAME)
Published by:
Editorial Office of Ship Engineering
Email: cbgc@cssmc.cn
ISSN 1000-6982
CN 31-1281/U
Issue 09,2025
Transient Flow Characteristics of Water Jet Propulsion During Gas-Liquid Two-Phase Set Sail Process
The Embodiment of Oil Painting Art in Ship Space Design
Simulation of Bio-Fuel Oil Application in Marine Low-Speed Engines
Safety Design of Large Cruise Ship Docking Based on Full Coupling Analysis
Research Status and Development Trends of Key Platforms for Collaborative R&D of Intelligent Ships
more..Safety Design of Large Cruise Ship Docking Based on Full Coupling Analysis
LIU Wenzheng;ZHANG Yanchang;YE Fei;CHEN Gang;[Purpose] To guarantee the safety of large cruise ships during dry-docking, a systematic method for dock-block arrangement is proposed that addresses the characteristics of extremely heavy loads, long docking durations, significant flare of the bow hull form, and excessive stress on bow-supporting blocks. [Method] A whole-coupling finite element model is developed that integrates the hull, dock blocks, dock floor, and pile foundation. Based on this model, a design workflow is established in which global safety assessment is embedded, together with quantitative tolerances for block setting. A gantry-type support tooling of specific height is designed to transfer designated mass loads. The proposed methodology is applied to optimize the docking block arrangement for a large cruise ship. [Result] Results demonstrate that the fully coupled analysis method enables high-precision simulation of multi-body interactions within the docking system. The gantry support tooling significantly reduces deformation in the central area of the dock floor. [Conclusion] The research provides an accurate analytical approach for safety assessment of large cruise ship docking and offers valuable reference for evaluating and optimizing docking schemes for other vessel types.
Fusing Dynamic Dual Attention with Multi-Modal Feature Pyramid for Small Target Detection Algorithm in Cruise Ship Collision Avoidance and Experimental Validation
DONG Xiaoyu;CAI Wei;TAN Qian;WANG Daijun;LI Shiyang;WANG Qiling;[Purpose] To effectively suppress environmental noise such as dynamic wave interference, floating object occlusion, and fluctuating visibility, and to achieve multimodal fusion of dynamic data and visual features of such ship types, [Method] a dynamic dual-attention mechanism(DDA)-you only look once(YOLO) detection algorithm for collision avoidance warning applications of large cruise ships and passenger ships is proposed, and it integrates dynamic data from the automatic identification system(AIS) with visual features. Based on a dataset constructed through ship pool simulation experiments, the navigation process of large passenger ships in complex waterways such as entering and exiting ports is simulated, and the algorithm is comprehensively tested for implementation effects. At the same time, ablation experiments are conducted to verify the role of each component in model performance. [Result] The results show that under an IoU threshold of 0.5, the DDA-YOLO model achieves an average detection accuracy of 0.811 for targets such as ships and buoys, which is 23.4% higher than the baseline YOLOv11 model, with a 30% reduction in parameters and a reasoning speed of 52 frame/s. Ablation experiments confirm that the convolutional block attention module(CBAM), spatial context-aware module(SCAM), and the combination of each component significantly improve model performance; the DDA mechanism enhances the detection accuracy of small targets, and the collaboration of each component optimizes and balances detection accuracy and efficiency. The multimodal feature pyramid(MM-FPN) effectively fuses AIS dynamic information with visual features, further enhancing detection robustness. [Conclusion] The research results can provide references for the optimization and application of collision avoidance warning technologies for large passenger ships.
Overview of the Development of 150 000 GT-Class Large Cruise Ship
MA Wangkou;ZHANG Mengting;GAO Pan;[Purpose] To promote the independent research and development of large cruise ships in China, [Method] The development process of 150 000 GT-class large cruise ship of cruise ship, and elaborates on the project work approach and key items, the comparison and verification of principal dimensions, and the general layout planning are briefly reviewed. The design and analysis work of main performances and systems, such as hull line comparison and optimization, damaged stability check, energy emciency design index(EEDI) calculation, structural model establishing, advanced evacuation simulation analysis, safe return to port system evaluation, qualitative analysis of alternative design, mooring and towing systems are briefly introduced as well. [Result] The main technical parameters of this cruise ship have reached the advanced level of similar mainstream cruise ship types in the world. Some of its general performances have been verified through tank tests, and the drawings have been approved by the classification society. [Conclusion] The research results can provide a certain reference for the independent development and design of cruise ships in China.
Design and Energy-Saving Strategies of the Air Conditioning System on Large Cruise Ships
ZHANG Xinqiao;WANG Renjie;YANG Yong;XU Rui;[Purpose] To promote the green development of large cruise ship air conditioning systems, Research on the energy-saving and optimized design of the air conditioning system can effectively enhance energy utilization emciency, reduce the operating costs of cruise ships, and decrease carbon emissions. [Method] Taking China's first domestically-built large cruise ship, Adora Magic City, as the research object, and in combination with the load characteristics and usage requirements of different functional areas of the cruise ship, a zonal design method for the air conditioning system is proposed. On this basis, energy-saving and optimized strategies for the air conditioning system are explored from aspects such as system architecture optimization and intelligent control. [Result] Under the premise of ensuring the safety and comfort of the air conditioning system, the overall energy efficiency of the system is improved, and the cost of the air conditioning system is controlled. [Conclusion] The research results can provide a theoretical basis and engineering reference for the subsequent design of air conditioning systems in large cruise ships.
Numerical Simulation of Sea Ice Bending Strength Based on Cohesive Element Method
XIE Kunjiang;WANG Qingfeng;ZHOU Li;HE Guangwei;DING Shifeng;[Purpose] Ice load is an important factor affecting the safe operation of marine structures, particularly in cold-region marine environments where sea ice plays a decisive role in the stability and safety of these structures. [Method] The study focuses on the bending failure mechanisms of sea ice and establishes a numerical model for three-point bending of sea ice based on the cohesive element method(CEM), integrated with a homogenized elastic-plastic constitutive model for numerical simulation. The LS-DYNA software is employed to perform model calculations, with simulation results compared against experimental data from sea ice in the Bohai Sea. [Result] The results demonstrate a high degree of correlation between simulation and experimental data, with an error margin of only 1.7%, which validates the model's effectiveness and accuracy. Subsequently, a sensitivity analysis of sea ice bending strength is conducted, revealing three key findings: mesh size significantly affects computational results; variations in the traction-separation law(TSL) curve induce strength fluctuations; and the fracture energy release rate exhibits a linear correlation with bending strength. Additionally, loading rate sensitivity is found to be low, aligning with conclusions from international studies. [Conclusion] It demonstrates that the proposed numerical method can effectively simulate the bending failure process of sea ice and lays the foundation for predicting ship-ice interactions.
