... on demonstrating polymetallic nodule collection and slurry pumping. Additionally, the paper highlights the performance of various subsystems of the mining machine, which have undergone rigorous development and testing in laboratory conditions with varying operating scenarios. INTRODUCTION National Institute...

... ABSTRACT During the operation of jack-up drilling platform, the pile leg is inserted into shallow seabed soil, and the upper part is covered with part of backfilled soil. After a long period of operation, the pile shoe bottom and the formation have a high degree of fit. At the end...

... of the whole pipe during operation are analyzed by using ABAQUS finite element software. The factors affecting the stability of conductor during pile driving were analyzed, including length of free section, number of hammering and hammering frequency. The results show that for the 30in(762mm) diameter...

... point mooring systems on FPSOs began in the 1970s, coinciding with the robust development of FPSOs in the subsequent decades. As of 2022, approximately 160 FPSOs are operating worldwide in regions like the North Sea, offshore West Africa, near the coast of Brazil, the South China Sea, the Gulf...

... ABSTRACT The motions of the vessel and the offshore platform topsides are quite complex during lifting operations by the dynamic positioning (DP) crane vessel. To ensure the safety of the operation, it is necessary to maintain the stability of the topside movement to avoid collisions between...

... ABSTRACT Under the action of high earthquake load, during the water filling operation of shield tunnel, on the one hand, the water body in the tunnel increases the overall stiffness of the tunnel lining structure which increases the inertia force of the structure, on the other hand, the water...

... interface offshore platform software operation computer simulation platform configuration monitoring drilling platform platform ocean simulation platform information operator marine simulation platform remote monitoring system control database ABSTRACT Due...

..., it is necessary to calculate and analyze the target ship's load adjustment, stability, structure, and external force allocation. The accurate structural analysis and evaluation of the seriously damaged ship is the prerequisite for the safe rescue operation of the ship. Finite element analysis software...

... gas as a primary energy source requires specialized facilities that can process LPG and LNG for transportation, distribution, storage, and extraction. Both types of facilities have some common design and operational challenges. However, they also have significant differences; LPG is primarily...

... ABSTRACT With the increasing weight of the topsides of the offshore platform in the developing offshore oil and gas resources, the installation cost and difficulty are greatly increased. It is necessary to reveal the dynamic response characteristics of the floatover operations and accurately...

... operation gravel calculation geology platform hull mooring system semi-floating operation self-elevating gravel laying stiffness self-elevating platform strength research geologist international society subsea system self-elevating gravel semi-floating operation performance...

... for maintenance decision of Wind turbines Jingyi Wu1,2, Yang Yu1,2, Siyi Du1,2, Yu Pan1,2 1. State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation, Tianjin University, Tianjin, China; 2. Tianjin Key Laboratory of Port and Ocean Engineering, Tianjin University, Tianjin, China...

... consideration of which allowed to make the thermo-mechanical design of the flowlines of the Buzios 5 project robust and compliant with DNV recommended practice and complementary operator specification. It introduces the reasons which render the global buckling design of such pipelines difficult, before...

... decreases as spudcan extraction progresses. Comparing simulation data to a theoretical model shows a relative error of about 3% for maximum pulling force. These findings provide valuable guidance for field spudcan extraction operations, addressing the limitations of empirical formulas commonly used in field...

... predict fast and accurately the cage deformations and mooring line loads under varying environmental conditions, validated on a full-scale net cage operated in SINTEF ACE industrial fish farm and numerical data from the FhSim software. This advancement supports decision-making and complex operations...

... operation, two vessels scale and hull form is studied, the facilities are calculated and selected. The mooring arrangement and person transfer is also checked. The time for bunkering is estimated. The results showed that these two vessels have good basic conditions and compatibility for ship to ship...

... navigation buoys, integrating more sensors and smart terminals, play an increasingly vital role. However, most offshore facilities face power supply issues. Given limited power and communication resources, ensuring a high communication success rate and extending the operational time of smart network...

... and initial development. The understanding of the operational risks of Maritime Autonomous Surface Ships (MASS) is still insufficient, and research on the applicability of relevant regulations and standards for the commercial operation of autonomous ships at sea has not yet commenced. If these issues...

... ABSTRACT The paper addresses the problem of thrusters interactions and thrusters identification for the purpose of dynamic positioning (DP) operations and DP capability prognosis. Carried out analyses are based on numerical and experimental methods. The computations show satisfactory...

... ABSTRACT This paper presents a feasibility of numerical analysis aimed at investigating gas replacement operations within LNG cargo tanks. Preceding LNG loading, essential procedures including inerting, gassing-up, and cool-down are conducted to prevent explosions, enhance re-liquefaction...