A method for dividing a docked half of a LNG powered ro-ro ship

By optimizing the assembly of the half-ship sections of the LNG-powered roll-on/roll-off vessel, the problems of the large weight of the LNG tank and the stern-biased center of gravity were solved, achieving efficient construction and improved safety of the half-ship, optimizing resource allocation, and shortening the construction cycle.

CN122402733APending Publication Date: 2026-07-17CHINA MERCHANTS JINLING SHIPBUILDING (JIANGSU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA MERCHANTS JINLING SHIPBUILDING (JIANGSU) CO LTD
Filing Date
2026-03-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the construction of LNG-powered roll-on/roll-off ships, the LNG tanks are heavy and have a center of gravity that is off-center at the stern, making it impossible to lift them during the half-ship stage. This affects the integrity and safety of the half-ship, restricts the utilization efficiency of the dock, and prolongs the construction cycle.

Method used

Guided by the floating state balance when half of the ship is floating, the combination of half-ship sections is optimized through big data prediction and reverse iterative calculation. LNG tanks are introduced in advance and weight and center of gravity are balanced to form the optimal half-ship range.

Benefits of technology

This approach maximizes the integrity of the half-ship, improves safety and construction efficiency, reduces high-altitude operations, optimizes resource allocation, shortens the construction cycle, and lowers costs.

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Abstract

本发明公开了一种LNG动力滚装船的坞内半船的划分方法,具体包括以下步骤:S1.基于坞容与整船布置确定半船空间长度;S2.界定首尾合拢口的技术边界:根据船厂在“半船”阶段的施工能力边界,确定合拢口的排除区域;S3.确立以LNG罐进舱为核心的最小半船范围;S4.基于大数据对S3确定的最小半船范围的重量重心进行预估与浮态初算;S5.根据S4的初算结果,以浮态优化为目标对半船范围进行迭代调整;S6.对S5得到的最佳浮态的半船范围进行全面的工程实施可行性评估,确定最终半船范围。本发明的划分方法通过提前引入LNG罐并以此为中心扩展工作范围,并基于重量重心的大数据预估进行分段组合的主动配平,实现半船状态的最大化完善。
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