... engineer’s toolbox. Two decades ago, model tests were performed on a seemingly simple geometry in the form of a rectangular barge with horizontal skirts fitted at its keel. The hull was held in place via a soft horizontal mooring system for simplicity and with a view to concentrating on the hydrodynamics...

... Abstract Recent runout accidents of GPS buoy demand more robust mooring system in harsh environment. The mooring with steep wave configuration formed by intermediate buoys could be a candidate of the robust mooring system. However, the steep wave mooring (SWM) could have some risk...

... and includes cracks, dents from wave actions, anchor impact on structures, horizontal and vertical wave impacts and ship collisions. In addition, failure of the dynamic position keeping system, mooring system breakage and incidents related to stability and ballasting have been reported. The paper provides...

... Abstract DNV is currently running a Joint Industry Project, “NorMoor JIP”, which is now approaching the end of phase 3. In this phase the fatigue limit state (FLS) of mooring line studless chains for permanent units has got the main attention. Phases 1 and 2 covered the ultimate (ULS...

... Abstract Fatigue damage assessment of mooring lines components is one of the main issues in the design and life extension monitoring of deepwater floating production units mooring systems. Floating units operating at several ocean regions, as in the Brazilian southeast coast and Africa west...

... Abstract This paper investigates the moment loading and heading response of a turret-moored vessel subjected to surface currents using two-dimensional Computational Fluid Dynamics. To investigate the hydrodynamic loads on the vessel, the moment load was first calculated when the vessel was held...

... Proceedings of the ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering OMAE2021 June 21-30, 2021, Virtual, Online OMAE2021-60739 MOORING DESIGNS FOR FLOATING OFFSHORE WIND TURBINES LEVERAGING EXPERIENCE FROM THE OIL & GAS INDUSTRY Kai-tung Ma Yongyan Wu Simen Fodstad...

... eliminate the fundamental geometric changes that determine real behavior time-domain finite-element models for cables since the 1970 s in cables, strings, moorings, guys, pipelines, riser, plates, skins, [1]. In this paper, we shall use the term cable structure as a subsea hulls, and other such slender...

... Proceedings of the ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering OMAE2021 June 21-30, 2021, Virtual, Online OMAE2021-60794 EXPERIMENTAL AND NUMERICAL STUDY OF THE INFLUENCE OF DRAG COEFFICIENT ON SNAP LOADS IN MOORING LINES OF A FLOATING OFFSHORE WIND TURBINE...

..., an aerodynamic software package for wind turbine analysis with the ability to be coupled with the hydrodynamic model. Due to the canted columns, a nonlinear analysis was performed using the coupled numerical hydrodynamic model of the platform with mooring system in extreme sea states. PyraWind FOWT...

...DEVELOPMENT OF DATA-DRIVEN MODELS FOR PREDICTION OF MOORING LINE TENSIONS Nitesh Kumar*, Ching Theng Liong, Wei Kean Chen, Allan Ross Magee, Kie Hian Chua, Yoo Sang Choo Technology Centre for Offshore & Marine, Singapore (TCOMS) *nitesh_kumar@tcoms.sg ABSTRACT This paper describes the development...

... in heave, roll and pitch is illustrated for the mean wave-drift force in surge and sway. FPSO motions and mooring line tensions from fully-coupled time-domain analysis in OrcaFlex is compared when using approximated QTFs and full QTFs from second-order diffraction/radiation analysis. Keywords: FPSO, second...

... against unique in-situ data from five moorings deployed between 2015 and 2018 by the Barents Sea Metocean and Ice Network (BASMIN) Joint Industry Project. The study shows that the existing FOAM forecasts produce adequate results in the Barents Sea. However, while studies have shown the assimilation...

...Abstract Abstract This paper aims to perform a time-domain mooring fatigue analysis for a Spar-type floating offshore wind turbine operated in the South China Sea. Tension ranges of mooring lines are achieved from a hydrodynamic analysis where the effects of wind, wave and current...

... FPSO FSO spar buoy cracks dents turret green water mooring heading control stability ballasting collisions and offloading IN SERVICE EXPERIENCES WITH SHIP-SHAPED FLOATING PRODUCTION UNITS Marita Halsne1, Narve Oma, Gerhard Ersdal, Arne Kvitrud, Roger L. Leonhardsen, Morten Langøy...

...REDUCTION IN MOORING SYSTEM LIFETIME DUE TO CORROSION AND SEVERE STORMS Michael MacNicoll1, Richard Akers Maine Marine Composites LLC Portland, ME Krish Thiagarajan University of Massachusetts Amherst Amherst, MA Wei-Ting Hsu KBR-Inc Houston, TX Abstract12 We report on a multi-year investigation...

...Abstract Abstract The way polyester ropes change their length in response to tension is often represented using a static-dynamic model with parameters for dual linear stiffness, based on testing according to defined procedures. This may not be sufficient for the mooring analysis since...

...TRAJECTORY PREDICTION OF MOORED VESSELS WITH REDUCED STATION KEEPING CAPABILITY DUE TO EXCEEDED ANCHOR LOAD LIMITS Micha Josten Institute of Ship Design and Ship Safety Hamburg University of Technology Hamburg, D-21073 Germany Email: m.josten@tuhh.de ABSTRACT This paper presents the development...

...AT-SEA EXPERIMENT ON DURABILITY AND RESIDUAL STRENGTH OF POLYESTER ROPE FOR MOORING OF FLOATING WIND TURBINE Tomoaki Utsunomiya1 Department of Marine Systems Engineering Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395, Japan Iku Sato, Koji Tanaka Energy Division Toda Corporation 1-18-1...

... 1 Copyright © 2013 by ASME COUPLED MULTI-PHASE CFD AND TRANSIENT MOORING ANALYSIS OF THE FLOATING WAVE ENERGY CONVERTER OWEL Rachel Nicholls-Lee Mojo Maritime Ltd. Falmouth, Cornwall, U.K. Adam Walker Mojo Maritime Ltd. Falmouth, Cornwall, U.K. Simon Hindley Mojo Maritime Ltd. Falmouth, Cornwall...