Optimization of ballast plan in launch jacket load-out

Kurniawan, Adi; Ma, Guowei

doi:10.1007/s00158-008-0287-7

Cited by 10 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wang et al [6] proposed an optimization method based on the dynamic programming algorithm for the ballast process of underwater rescue robots, established and solved the optimization model with the minimum ballast time as the optimization objective, and verified the feasibility of the optimization results by using the simulation results. Adi et al [7] divided the lifting processes into several stages and employed a multi-objective evolutionary algorithm to determine the optimal ballast-allocation scheme for each stage, with numerical simulation results finding that the obtained allocation scheme can significantly improve the ballast efficiency compared with traditional approaches. Low et al [8] put forward a modular design-optimization method for the ballast water-allocation process of large container ships, and actual tests demonstrated that the established method can achieve stable ballast water allocation, reduce ballast water-allocation volume, and lower shipping costs.…”

Section: Crane Ballast Systemmentioning

confidence: 99%

Point-to-Point-Based Optimization Method of Ballast Water Allocation for Revolving Floating Cranes with Experimental Verification

Wang,

Yu,

et al. 2024

JMSE

View full text Add to dashboard Cite

The Revolving Floating Crane (RFC) is a specialized engineering vessel crucial for offshore lifting operations, such as offshore platform construction and deep-water salvaging. It boasts impressive lifting capacity, good adaptability to various environmental conditions, and high operational efficiency. Conventionally, the safety and stability of RFC operations heavily depend on manual ballast water allocation, which is directly influenced by factors such as personnel status and sea conditions. These manual operations often result in reduced lifting efficiency, higher energy consumption, and compromised operational safety. In response, this paper introduces a ballast water-allocation approach based on the Point-to-Point (PTP) theory for the intelligent operation process of the RFC. The fundamental principles of the PTP theory are analyzed, and a method tailored to optimize ballast water allocation for RFC is proposed. Considering the unique characteristics of the ballast system and the specific requirements of lifting operations, an optimization model for PTP-based ballast water allocation is established. Numerical experiments are conducted to verify the efficacy and reliability of the proposed method. Comparing it to the conventional approaches, the results demonstrate a notable 17.75% reduction in energy consumption and an impressive 73.49% decrease in decision-making time, showcasing the superiority of the proposed approach. Finally, the engineering feasibility of the PTP-based optimization method for ballast water allocation is validated through actual lifting experiments, underscoring its potential to enhance RFC operations.

show abstract

Section: Crane Ballast Systemmentioning

confidence: 99%

Point-to-Point-Based Optimization Method of Ballast Water Allocation for Revolving Floating Cranes with Experimental Verification

Wang,

Yu,

et al. 2024

JMSE

View full text Add to dashboard Cite

show abstract

“…During the block erection process on a conventional floating dock [1], the ballasting operation is carefully controlled in order to compensate for deflection due to the weight of the blocks and to maintain the stability of the floating dock. Since the floating dock bends most in the longitudinal direction, typical ship blocks are symmetric along the longitudinal axis, and the ballast tanks are arranged longitudinally.…”

Section: Introductionmentioning

confidence: 99%

Dimension control method for the erection of structures on offshore floating dock

Hong

Cha

Kim

et al. 2014

2014 Oceans - St. John's

View full text Add to dashboard Cite

For the world's first Offshore Floating Dock(OFD), the dimension control system and method to aim at managing the dimension of offshore blocks in the process of erection are developed. This paper introduces the dimension control system and deals with the method of creating a simplified OFD model and of optimizing ballast-water plan to satisfy the demanded dimension of erected offshore plant blocks. A number of tests and successful application to the Jack & Saint Malo (JSM) offshore plant project was achieved and the results are also introduced.

show abstract

“…When the number of non-dominated solutions exceeds Pop-Size, only a limited subset of solutions (= PopSize) is transferred to the next iteration. To ensure that the solutions are well spread without discarding useful solutions and to avoid clustering of solutions, we used a clustering algorithm (Kurniawan and Ma, 2009). The clustering algorithm becomes active only when the number of non-dominated solutions is at least 80% of the PopSize or greater.…”

mentioning

confidence: 99%