<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The current market for the assembly and disassembly of offshore platforms exceeds $100 billion. However, existing methods face limitations that reduce their efficiency. To address these limitations, we propose a dual-vessel collaborative assembly and disassembly system with multiple motion-compensated lifting arms. The compensation system enables the lifting arms to isolate the topside module from the wave-induced loads, and specifically the torque, transmitted from the lifting vessel. Through theoretical derivations based on hydrostatics principles, a mathematical model of the topside module is established. We consider the effects of lifting load, tidal changes and the ballast water system on stability, and develop a stability analysis model for the dual-vessel system. The intact stability and loss-of-load stability under dual-vessel collaborative lifting conditions are analysed to verify compliance with stability requirements for lifting a 30,000 ton topside module. The results conclusively demonstrate that the proposed system with multiple motion-compensated lifting arms meets the stability performance needs for dual-vessel collaborative offshore assembly and disassembly operations.</p>
</abstract>

The current market for the assembly and disassembly of offshore platforms exceeds $100 billion. However, existing methods face limitations that reduce their efficiency. To address these limitations, we propose a dual-vessel collaborative assembly and disassembly system with multiple motion-compensated lifting arms. The compensation system enables the lifting arms to isolate the topside module from the wave-induced loads, and specifically the torque, transmitted from the lifting vessel. Through theoretical derivations based on hydrostatics principles, a mathematical model of the topside module is established. We consider the effects of lifting load, tidal changes and the ballast water system on stability, and develop a stability analysis model for the dual-vessel system. The intact stability and loss-of-load stability under dual-vessel collaborative lifting conditions are analysed to verify compliance with stability requirements for lifting a 30,000 ton topside module. The results conclusively demonstrate that the proposed system with multiple motion-compensated lifting arms meets the stability performance needs for dual-vessel collaborative offshore assembly and disassembly operations.

Stability Analysis of Dual-Lifting Vessels under Collaborative Lifting Operation

School of Ocean Engineering and Technology

Shenzhen intelligent Ocean Engineering Innovation Center Co., LTD.

Polish Maritime Research

This work is licensed under the Creative Commons Attribution 4.0 International License.

{"article-title":"Stability Analysis of Dual-Lifting Vessels under Collaborative Lifting Operation"}

The current market for the assembly and disassembly of offshore platforms exceeds $100 billion. However, existing methods face limitations that reduce their...

Stability Analysis of Dual-Lifting Vessels under Collaborative Lifting Operation

Publié en ligne: 22 juin 2024

Pages: 46 - 58

DOI: https://doi.org/10.2478/pomr-2024-0020

Mots clés
ship stability, lifting vessel, multi-body system, collaborative lifting operations

© 2024 Dejiang Li et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Stability Analysis of Dual-Lifting Vessels under Collaborative Lifting Operation

Publié en ligne: 22 juin 2024

Pages: 46 - 58

DOI: https://doi.org/10.2478/pomr-2024-0020

Mots clésship stability, lifting vessel, multi-body system, collaborative lifting operations

© 2024 Dejiang Li et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Mots clés
ship stability, lifting vessel, multi-body system, collaborative lifting operations