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    • Oil-mediated oxidative-stress responses in a keystone zooplanktonic species, Calanus finmarchicus 

      Soloperto, Sofia; Altin, Dag; Hallman, Anna; Skottene, Elise; Hansen, Bjørn Henrik; Jenssen, Bjørn Munro; Ciesielski, Tomasz Maciej (Peer reviewed; Journal article, 2022)
      The copepod Calanus finmarchicus is an ecologically important species in the North Atlantic, Norwegian and Barents seas. Accidental or continuous petroleum pollution from oil and gas production in these seas may pose a ...

    • Om noen vilkår for innovasjoner i fiskeflåten - Forprosjekt om muligheter for innovasjon i fremtidens fiskeflåte. 

      Standal, Dag; Henriksen, Kristian (SINTEF Fiskeri og havbruk;A24291, Research report, 2013-04-12)
      I dette forprosjektet ble det søkt å besvare om at reduksjonen i antall fartøyer i fiskeflåten på Vestlandet kan påvirke utstyrsleverandørenes forhold til fiskeflåten som fremtidig marked og herunder redusert insentiv for ...

    • OMAE2017-61768 VIV Responses of Riser With Buoyancy Elements: Forced Motion Test and Numerical Prediction 

      Wu, Jie; Lie, Halvor; Fu, Shixiao; Baarholm, Rolf Jarle; Constantinides, Yiannis (ASME Proceedings | Prof. Carl Martin Larsen and Dr. Owen Oakley Honoring Symposia on CFD and VIV;OMAE2017-61768, Chapter, 2017-06-25)
      Steel Lazy Wave Riser (SLWR) is an attractive deep water riser concept. When subjected to vortex induced vibrations (VIV), the vortex shedding process of the buoyancy element and the bare riser section will be different ...

    • OMAE2017-62056 Effective Power and Speed Loss of Underwater Vehicles in Close Proximity to Regular Waves 

      Daum, Stefan; Greve, Martin; Skejic, Renato (ASME digital collection;OMAE2017-62056, Chapter, 2017-06-30)
      The present study is focused on performance issues of underwater vehicles near the free surface and gives insight into the analysis of a speed loss in regular deep water waves. Predictions of the speed loss are based on ...

    • Omega-3 and alpha-tocopherol provide more protection against contaminants in novel feeds for Atlantic salmon (Salmo salar L.) than omega-6 and gamma tocopherol 

      Søfteland, Liv Ingeborg Rosvoll; Berntssen, Marc; Kirwan, Jennifer A.; Størseth, Trond Røvik; Viant, Mark.R.; Torstensen, Bente Elisabeth; Waagbø, Rune; Olsvik, Pål Asgeir (Journal article; Peer reviewed, 2016)
      Extended use of plant ingredients in Atlantic salmon farming has increased the need for knowledge on the effects of new nutrients and contaminants in plant based feeds on fish health and nutrient-contaminant interactions. ...

    • On Common Research Needs for the Next Generation of Floating Support Structures 

      Aksnes, Vegard Øgård; Alsos, Hagbart Skage; Bachynski-Polic, Erin Elizabeth; Berthelsen, Petter Andreas; Delhaye, Virgile Roger; Furevik, Birgitte Rugaard; Jostad, Hans Petter; Kristiansen, Trygve; Ommani, Babak (Chapter; Peer reviewed, 2022)
      The world is facing several industrial and societal challenges, such as providing enough renewable energy and enough safe and healthy food as formulated in the United Nations sustainable development goals. Using floating ...

    • On the Design Considerations of New Offloading Hose Applied on a Turret Moored FPSO 

      Yin, Decao; Fylling, Ivar John; Lie, Halvor; Baarholm, Rolf Jarle; Kendon, Timothy Edward (ASME Digital collection;OMAE2017-61410, Chapter, 2017-06)
      Offloading hoses are used to transfer crude oil or liquid petroleum products from a fixed offshore production platform/floating production, storage and offloading (FPSO) unit to shuttle tankers. The hoses are subjected to ...

    • On the effect of co2 on seismic and ultrasonic properties: A novel shale experiment 

      Rørheim, Stian; Bhuiyan, Mohammad Hossain; Bauer, Andreas; Cerasi, Pierre (Peer reviewed; Journal article, 2021)
      Carbon capture and storage (CCS) by geological sequestration comprises a permeable formation (reservoir) for CO2 storage topped by an impermeable formation (caprock). Time-lapse (4D) seismic is used to map CO2 movement in ...

    • On the numerical stability in dynamical distributed simulations 

      Skjong, Stian; Pedersen, Eilif (Journal article; Peer reviewed, 2019-09)
      This work takes aim at studying numerical stability in distributed simulations through dynamic stabilityand stability criteria for explicit solvers. This is done by studying outer stability limits, for example stabilityconditions ...

    • On the significance of the higher-order stress in riser vortex-induced vibrations responses 

      Wu, Jie; Yin, Decao; Lie, Halvor; Larsen, Carl Martin; Baarholm, Rolf Jarle; Liapis, Stergios (Journal article; Peer reviewed, 2019-02)
      Vortex-induced vibrations (VIV) can lead to fast accumulation of fatigue damage and increased drag loads for slender marine structures. VIV responses mainly occur at the vortex shedding frequency, while higher harmonics ...

    • On the use of random walk schemes in oil spill modelling 

      Nordam, Tor; Nepstad, Raymond; Litzler, Emma; Röhrs, Johannes (Journal article; Peer reviewed, 2019-09)
      In oil spill models, vertical mixing due to turbulence is commonly modelled by random walk. If the eddy diffusivity varies with depth, failing to take the derivative of the diffusivity into account in the random walk scheme ...

    • On two speed optimization problems for ships that sail in and out of emission control areas 

      Fagerholt, Kjetil; Psaraftis, Harilaos (Journal article; Peer reviewed, 2015)
      This paper deals with two speed optimization problems for ships that sail in and out of Emission Control Areas (ECAs) with strict limits on sulfur emissions. For ships crossing in and out of ECAs, such as deep-sea vessels, ...

    • On-board Live Storage of Atlantic Cod (Gadus morhua): Effects of Capture Stress, Recovery, Delayed Processing, and Frozen Storage on Fillet Color Characteristics 

      Erikson, Ulf Gøran; Tveit, Guro Møen; Bondø, Morten Steen; Digre, Hanne (Journal article; Peer reviewed, 2019-11-11)
      On-board live storage of Atlantic cod caught by trawl was evaluated as a potential method to improve the color characteristics of fillets. Before slaughter and processing, the fish were: (i) stored live for 3–6 h, (ii) ...

    • On-Bottom Stability Analysis of Subsea Pipelines Under Combined Irregular Waves and Currents 

      Ji, Guomin; Li, Lanjing; Ong, Muk Chen (ASME Proceedings | Pipelines, Risers, and Subsea Systems;OMAE2017-61363, Chapter, 2017-06-25)
      The objective of the paper is to study the effect of different parameters regarding on-bottom stability of subsea pipelines under combined irregular waves and currents. The effect of friction coefficient is first investigated. ...

    • Ontogeny-Specific Skeletal Deformities in Atlantic Haddock Caused by Larval Oil Exposure 

      Olsvik, Pål Asgeir; Sørhus, Elin; Meier, Sonnich; Torvanger, Ingrid; Thorbjørnsen, Maja; Thorsen, Anders; Sørensen, Lisbet; Fjelldal, Per Gunnar; Karlsen, Ørjan; Guimaraes, Igo G.; Lie, Kai Kristoffer (Peer reviewed; Journal article, 2021)
      Bone deformities are one of the main effects of crude oil exposure in marine fish larvae. Craniofacial and jaw deformities, if severe enough, may restrict feeding and ultimately kill the developing larvae. This study aimed ...

    • Open Hatch Carriers – Future Vessel Designs & Operations 

      Lindstad, Elizabeth; Alterskjær, Sverre Anders; Sandaas, Inge; Solheim, Astrid Vamråk; Vigsnes, Joakim Tveiten (Journal article; Peer reviewed, 2017)
      The development of Open hatch carriers (OHC) dates back to the early 1960s linked to transport of newsprint from the paper mills along the coast of British Columbia (Canada) to the news-printers in San Francisco and Los ...

    • Operability analysis of control system for ROV launch-and-recovery from autonomous surface vessel 

      Tran, Celine; Gushkov, Ivan Ivanov; Nordvik, Kristoffer; Røang, Simen Troye; Lysthaug, Simen Brodalen; Ommani, Babak; Fossen, Thor I.; Hassani, Vahid; Smines, Vidar; Johansen, Tor Arne (Journal article; Peer reviewed, 2023)
      The launch and recovery of equipment such as remotely operated vehicles (ROVs) is a critical task that defines the operability limits of many marine operations. This paper considers the analysis of control systems that are ...

    • Operability robustness index as seakeeping performance criterion for offshore vessels 

      Gutsch, Martin; Steen, Sverre; Sprenger, Florian (Journal article; Peer reviewed, 2020-12-01)
      The offshore industry operates increasingly large installations in exposed areas requiring high reliability and availability. Downtime of complex offshore systems leads to significant financial losses. Towards year-round ...

    • Operation and Maintenance Modelling 

      Welte, Thomas Michael; Sperstad, Iver Bakken; Halvorsen-Weare, Elin Espeland; Netland, Øyvind; Nonås, Lars Magne; Stålhane, Magnus (Chapter, 2018)
      Operational expenditure (OPEX) is one of the major contributors to the levelized cost of energy (LCoE) for offshore wind farms. To assess different solutions and select the best ones, good models for maintenance and logistics ...

    • Operational planning for routes and schedules for a fleet of fuel supply vessels 

      Christiansen, Marielle; Fagerholt, Kjetil; Rachaniotis, Nikos; Stålhane, Magnus (Journal article; Peer reviewed, 2017-09)
      This paper considers a real operational problem of routing and scheduling a fleet of fuel supply vessels used to service customer ships anchored outside a major port. The problem can be formulated as a rich multi-trip ...