At Fusie Engineers, we place great emphasis on Marine Engineering, especially in the aspect of predicting the impact of harsh marine conditions on offshore structures. This is a crucial element in almost all of our projects. Understanding the variable metocean climate and the behavior of floating assets in such conditions is fundamental to every sea transport and marine operation we conduct. The outcomes of marine analysis have a direct and significant effect on the overall operational costs, a challenge inherent to the offshore industry.
Our solutions do not always necessitate complex methodologies. Employing default motion criteria is sufficient in some cases as opposed to conducting a detailed diffraction analysis in ANSYS AQWA. A stability check, based on the stability booklet, might suffice in some cases in lieu of an extensive intact and damage stability analysis in tools like GHS or AutoHydro. The specific needs of the project and the implications of the analysis results dictate our approach.
Drawing on our past experience of our naval architects with intricate marine operations, such as lowering a 9000-ton caisson to the seabed in Morocco or performing mooring analysis for the construction vessel of Europe’s second-largest suspension bridge, to the use of a semi-submersible barge for a salvage operation, we have a well-rounded perspective based equally on theoretical and practical aspects of marine operations.
Prior to every sea transport the intact and damage stability of the vessels must be assessed. We prepare detailed reports for Marine Warranty Surveyor approval.
We perform quasi-static analysis of quay mooring configurations to define the mooring arrangement. Depending on the consequence factors & operational requirements, a quasi-static or fully dynamic analysis is necessary for offshore mooring scenarios. The envelope of motions, check of clashes with subsea cables or pipelines etc. are the parameters assessed in addition to checking the line tensions and check of anchor holding capacity. Depending on availability of tugs, the redundancy checks are performed.
Offshore operations such as heavy lifting of a topside module, of lowering of a subsea template are examples of scenarios where a detailed dynamic analysis must be performed to assess factors such as envelope of motions, D.A.F. on the crane. The results of the dynamic analysis form the basis for the workability limits of these operations.
Transport of project cargo onboard flat-top barges, jack-up barges or project cargo vessels necessitate a motion analysis to predict the vessel motion characteristics during the voyage. Depending on the geometry of the floating asset, a diffraction study or a strip theory based approach is adopted.
