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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 6 ,2026
Structural Design and Analysis of Bidirectional Self-Resetting Cyclical Transmission Mechanism
Special Topics：Polar Equipment and Technology
Spatial Scheduling Method for Irregular Ship Blocks on Moulding Bed Based on Iterative Greedy Algorithm
Sloshing Characteristics of Anti-Sloshing Baffled Liquid Tanks Under Harmonic Excitation
Simulation on the Characteristics of Internal and External Flow Field of Ship-Shaped Cage with Truss and Plate Frame Hybrid Structure
more..Introduction of Icebreaking Performance Prediction Method Based on Ice Tank Tests
WU Jun;ZHANG Yan;YU Hailong;DOU Xiaoliang;WU Gang;[Purpose] Domestic ice tank technology still requires improvement in both testing methodologies and prediction techniques,along with a lack of validation through practical engineering applications. [Method] research on prediction methods for icebreaking capability based on ice tank tests is conducted. It systematically reviews commonly used types of ice tank tests,with a focus on analyzing the characteristics of two typical methods: towed propulsion tests and free-running propulsion tests in ice. It compares the advantages and disadvantages of different propulsion control modes during self-propulsion tests,derives the calculation method for thrust deduction,and summarizes the differences between the International Towing Tank Conference(ITTC) formula and the Hamburg Ship Model Basin(HSVA) formula in ice resistance correction. [Result] The results reveal the applicable scenarios of towed and free-running methods,the pros and cons of propulsion control modes,the calculation process of thrust deduction,and the core differences between the ITTC and HSVA formulas in resistance correction. Furthermore,the feasibility of using towed propulsion test results for icebreaking capability prediction is verified,and the utilization of towed propulsion test results to forecast icebreaking capability is elaborated. [Conclusion] The findings can serve as a reference for similar ships to predict icebreaking capability using ice tank tests during the preliminary design stage.
Dynamic Bearing Capacity of Ice Wedges for Circumferential Crack Method
LI Wenlong;LI Fang;DING Shifeng;DONG Wenbo;[Purpose] To accurately characterize the dynamic effect of icebreaking loads varying with loading rate under high-speed loading and to extend the applicability of the circumferential crack method to high-speed icebreaking scenarios,[Method] a dynamic bearing capacity calculation method for ice wedges oriented to the circumferential crack method is proposed. Numerical simulations of the dynamic bending fracture process are conducted using extended finite element method to obtain a database of ice wedge dynamic bearing capacity under the effects of ship-ice relative velocity,ice wedge depth,ice wedge angle,and hull inclination angle. A neural network is trained on this database to establish a fast surrogate model that maps influencing parameters to ice wedge bearing capacity. The surrogate model is applied to improve the bending icebreaking criterion in circumferential crack method. Taking the Xuelong 2 icebreaker as an example,bow-on constant-speed icebreaking model tests are carried out,and the calculation results of the circumferential crack method based on the improved ice wedge bearing capacity are compared with the model test results to validate the effectiveness of the proposed method. [Result] Results show that the ice resistance errors at different speeds are within 8%,indicating that the proposed method is effective. [Conclusion] The results can provide a reference for the rapid and accurate calculation of ice wedge dynamic bearing capacity in the circumferential crack method.
Research Progress of Polar Ship Propulsion Technology
WANG Yanqi;XIONG Weipeng;CHEN Zhe;YE Liyu;WANG Chunhui;WANG Chao;[Purpose] To address the challenges faced by propellers operating in ice-covered waters,including ice-impact loading,performance degradation,and structural damage,the research progress on ice-class propellers is reviewed and a reference for design optimization and reliable operation is provided. [Method] Focusing on propeller-ice interaction mechanisms,structural strength,configuration and materials,as well as engineering applications,this study summarizes relevant experimental investigations,numerical methods,and engineering achievements reported both in China and abroad. [Result] Existing studies have systematically revealed the mechanisms of propeller-ice interaction and their influences on hydrodynamic performance,structural response,and fatigue damage,while also achieving notable progress in strength assessment,configuration design,material selection,and engineering applications. [Conclusion] Research on ice-class propellers has developed into a relatively complete technical framework; however,deficiencies still remain in realistic ice-condition representation,multi-physics coupling,life prediction,and the independent development of high-end equipment. These issues will continue to be key focuses of future research and engineering development.
Analysis of Technology Structure and Strategic Implications of Patent Landscape in Polar Ship Equipment
ZHANG Dan;[Purpose] In order to identify technical the characteristics of global polar ship equipment,[Method] the technical structure of China's patent layout is systematically analyzed,the advantages and disadvantages of China's strategies,and optimize subsequent layout strategies are clarified. [Result] The study found that global polar ship patents have gone through the initial,development and rapid outbreak stages; in terms of published patents,China ranks first in the world,showing features of wide coverage,uneven density distribution and active performance by universities. A comparative analysis of the quantity and distribution of Chinese and foreign patents shows that Russia focuses on engineering tasks,Japan,South Korea and Finland cultivate core strengths,while the USA and Germany focus on basic research. [Conclusion] China's patent layout faces problems like insufficiently diverse strategies,lack of real-ship applications for domestically made large equipment,inadequate commercial planning and gaps in patent conversion. Accordingly,suggestions are made to establish national technology projects,build patent portfolios to strengthen technical barriers,promote patent technology standardisation based on real-ship data,and enhance cooperation among innovation entities to explore patent-sharing mechanisms,providing a reference for the intellectual property layout of polar ship equipment.
Sloshing Characteristics of Anti-Sloshing Baffled Liquid Tanks Under Harmonic Excitation
WEI Yi;GAO Zhenguo;LI Xianshu;WANG Jiaxia;LIU Kun;[Purpose] To ensure ship safety,it is necessary to carry out sloshing analysis and anti-sloshing design. [Method] It establishes a two-dimensional numerical model of a liquid tank to analyze the effects of baffled tanks on liquid sloshing under harmonic excitation. Free surface decay simulations are conducted for tanks with baffles of varying heights and configurations,with particular focus on the antisloshing performance of baffled tanks under resonance conditions. [Result] The results indicate that the introduction of baffles suppresses sloshing in the tank,and increasing the baffle height effectively mitigates the nonlinear effects of sloshing motion. Among the three proposed baffle configurations,the double sided curved baffle guides fluid motion through its curved structure,creating larger vortex zones on both sides of the flow field. This promotes the dissipation of sloshing energy and yields the most effective suppression of liquid sloshing. [Conclusion] The research results provide valuable reference for suppressing tank sloshing to ensure the safe navigation of ships.
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