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Design and verification of a sway-yaw control system for Surface Effect Ships using vent valves
(Journal article; Peer reviewed, 2019)For an offshore worker in the oil and gas industry, the helicopter transport is the activity associated with the highest risk. An alternative to helicopter crew transfers is to use Surface Effect Ships (SES) to transport ... -
Design Parameters for Increased Operability of Offshore Crane Vessels
(ASME Proceedings | Torgeir Moan Honoring Symposium;OMAE2017-62307, Chapter, 2017-06-25)Marine subsea operations are performed by highly specialized ships, referred to as Inspection, Maintenance, and Repair (IMR) and Offshore Construction Vessels (OCV). Although the ships and their on-board equipment are ... -
Design Study of a Hybrid Power System for a Ferry Using Open Simulation Platform
(Peer reviewed; Journal article, 2021)In a hybrid power system, an energy storage device unlocks the possibility of optimizing the design and operation. Only a properly tuned control strategy with correctly sized machinery under specific operation profiles ... -
Design, Modelling and Analysis of a Large Floating Dock for Spar Floating Wind Turbine Installation
(Journal article; Peer reviewed, 2020-07)Installation of floating wind turbines at the offshore site is a challenging task. A significant part of the time efficiency and costs are related to the installation methods which are sensitive to weather conditions. This ... -
Designing Composite Adaptive Propeller Blades with Passive Bend–Twist Deformation for Periodic-Load Variations Using Multiple Design Concepts
(Journal article; Peer reviewed, 2023)Four plausible design concepts are applied together to investigate composite bend–twist propeller-blade designs that show high twisting per bending deflection. The design concepts are first explained on a simplified blade ... -
Designing vortices in pipe flow with topography-driven Langmuir circulation
(Peer reviewed; Journal article, 2021)We present direct numerical simulation of a mechanism for creating longitudinal vortices in pipe flow, compared with a model theory. By furnishing the pipe wall with a pattern of crossing waves, secondary flow in the form ... -
Detection of mooring line failures using Dynamic Hypothesis Testing
(Journal article; Peer reviewed, 2018-07-01)This article proposes a novel methodology for the detection of mooring line breakage in thruster assisted position mooring (PM) systems, when no measurements of the tensions on the mooring lines are available. For dynamic ... -
Determinants of airborne benzene evaporating from fresh crude oils released into seawater
(Journal article; Peer reviewed, 2019-03)Benzene, toluene, ethylbenzene, xylenes, naphthalene and n-hexane evaporating from a thin oil film was measured for 30 min in a small-scale test system at 2 and 13 °C and the impact of physicochemical properties on airborne ... -
Determining spatial feed distribution in sea cage aquaculture using an aerial camera platform
(Journal article; Peer reviewed, 2019-11)Within this paper we describe an unmanned aerial vehicle (UAV) based method to estimate the spatial feed pellet distribution in salmon fish-cages and exploit it within a case study to determine the radial pellet distribution ... -
Development and assessment of novel technologies improving the fishing operation and on board processing with respect to environmental impact and fish quality (DANTEQ)
(SINTEF Fiskeri og havbruk reports;A27309, Research report, 2015)This is a final report of the project DANTEQ (2010-2015). Through this project new competence and new methods for optimal handling of whitefish onboard with respect to raw material quality and energy efficiency have been ... -
Development and verification of modeling practice for numerical estimation of wind loads on offshore floating structures
(Peer reviewed; Journal article, 2022)Mean wind load on a semi-submersible rig and an FPSO was investigated by using Computational Fluid Dynamics (CFD) for the modeling practice developed in Reproducible Offshore CFD JIP. The modeling practice is benchmarked ... -
Development of a hybrid simulation framework for the production planning process in the atlantic salmon supply chain
(Peer reviewed; Journal article, 2021)The farmed salmon supply chain has a highly complex and integrated structure, where activities occur both in the sea and on land. Due to this complexity, the supply chain needs appropriate decision-support tools to aid the ... -
Development of a Simulator Training Platform for Fish Farm Operations
(ASME Proceedings | Structures, Safety and Reliability;OMAE2017-62023, Chapter, 2017-06)The Norwegian aquaculture industry is accident prone compared to other industries and employees report a high number of near-accidents. Furthermore, escape of fish is a challenge for the industry. There is a potential for ... -
Developmental effects in fish embryos exposed to oil dispersions – the impact of crude oil micro-droplets
(Journal article; Peer reviewed, 2019-09)During accidental crude oil spills and permitted discharges of produced water into the marine environment, a large fraction of naturally occurring oil components will be contained in micron-sized oil droplets. Toxicity is ... -
Dialogmøte om teknologi for trenging av fisk i merd
(SINTEF Fiskeri og havbruk rapporter;A24309, Research report, 2013-04-19)SINTEF Fiskeri og havbruk arrangerte den 19. mars 2013, i samarbeid med Fiskeri- og havbruksnæringens forskningsfond (FHF), et dialogmøte med fokus på teknologi for trenging av fisk i merd. Under møtet ble status for ... -
Dietary and seasonal variability in trophic relations at the base of the North Sea pelagic food web revealed by stable isotope and fatty acid analysis
(Journal article; Peer reviewed, 2018-11)A two-dimensional biomarker approach including fatty acids and stable isotopes of seston and copepods was applied to examine how the variability at the base of the food web affects trophic interactions between primary ... -
Different topologies of natural vortex dislocations in Mode A wake
(Peer reviewed; Journal article, 2022)The mode A wake behind a circular cylinder at Reynolds number 200 was simulated by directly solving the three-dimensional Navier–Stokes equations. A more detailed investigation of different topologies of natural vortex ... -
Direction, not detail: Progress towards consensus at the fourth intergovernmental conference on biodiversity beyond national jurisdiction
(Peer reviewed; Journal article, 2022)After a two year delay caused by the COVID-19 pandemic, the fourth intergovernmental conference (IGC-4) in the negotiations for a new UN treaty to address the conservation and sustainable management of biodiversity beyond ... -
Directional wave spectrum estimation with ship motion responses using adversarial networks
(Peer reviewed; Journal article, 2022)The external environmental conditions around a vessel are essential for efficient and safe ship operation, among which the sea state is of key importance. Considering the ship as a large wave buoy, the sea state can be ... -
Discrimination between weaned and unweaned atlantic cod (Gadus morhua) in capture-based aquaculture (CBA) by X-ray imaging and radio-frequency metal detector
(Journal article; Peer reviewed, 2014-04-17)The aim of this study was to investigate the feasibility of two detection methods for use in discrimination and sorting of adult Atlantic cod (about 2 kg) in the small scale capture-based aquaculture (CBA). Presently, there ...