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Sea Ice Tracking with a Spatially Indexed Labeled Multi-Bernoulli Filter
(Chapter, 2017)In polar region operations, drift ice positioning and tracking is useful for both scientific and safety reasons. At its core is a Multi-Target Tracking (MTT) problem in which currents and winds make motion modeling difficult. ... -
Sea lice (Lepeophtheirus salmonis and Caligus elongatus) during freshwater treatment
(Master thesis, 2019)Siden begynnelsen på 1960-tallet, har lus vært et problem for fiskevelferden for akvakultur næringen i Norge. Lusen har en større økonomisk påvirkning enn noen annen parasitt, og Lepeophteirus salmonis har blitt indentifisert ... -
Sea Loads on Closed Flexible Fish Cages
(Doctoral theses at NTNU;2018:28, Doctoral thesis, 2018)Norway has become the world's largest producer of Atlantic salmon through the use of open net structures in the sea. The aquaculture facilities have grown in both size and number. Currently, the industry faces increased ... -
Sea or summit? Wild reindeer spatial responses to changing high-arctic winters
(Peer reviewed; Journal article, 2021)Because of climate change, wildlife is facing altered environments, including profound shifts in temperature and precipitation regimes. In snow-dominated ecosystems, winter warming and resulting changes in snowpack properties ... -
Sea Passage Scenario Simulation for Ship System Performance Evaluation
(Doctoral theses at NTNU;2019:265, Doctoral thesis, 2019)This thesis addresses evaluation of ship system operational performance exposed to ocean waves for providing enhanced evaluation capabilities in the transition towards environmentally friendly shipping. It proposes and ... -
Sea state estimation based on vessel motion responses: Improved smoothness and robustness using Bezier surface and L1 optimization
(Peer reviewed; Journal article, 2021)Floating structures oscillate in waves, where these wave-induced motions may be critical for various marine operations. An important consideration is thereby given to the sea states at the planning and operating stages for ... -
Sea state estimation using model-scale DP measurements
(Chapter, 2015)Complex marine operations are moving further from shore, into deeper waters, and harsher environments. The operating hours of a vessel are weather dependent, and good knowledge of the prevailing weather conditions may ... -
Sea state estimation using multiple ships simultaneously as sailing wave buoys
(Journal article; Peer reviewed, 2019)The article presents initial ideas towards a network-based approach for sea state estimation used for marine operations and other maritime applications. In principle, all available means, ranging from in situ buoys, fleet ... -
Sea State Estimation Using Quadratic Discriminant Analysis and Partial Least Squares Regression
(Journal article; Peer reviewed, 2019)This paper proposes non-model based sea state estimation methods for a dynamically positioned vessel. Sea state estimation entails finding the wave direction, significant wave height and peak wave period and is done based ... -
Sea state estimation using vessel response in dynamic positioning
(Journal article; Peer reviewed, 2018)This paper presents a novel method for estimating the sea state parameters based on the heave, roll and pitch response of a vessel conducting station keeping automatically by a dynamic positioning (DP) system, i.e., without ... -
Sea State Limitations for the Deployment of Subsea Compression Station Modules
(Master thesis, 2012)Deployment of a large box structure in many sea states has been investigated. Two deployment methods are compared; crane installation over the side and through moonpool installation. The structure is 12 [m] long, 6 [m] ... -
Sea state optimization of ILT equipment integrated with rigid pipelines on TechnipFMC's reel-lay vessel Deep Energy
(Master thesis, 2022)Denne masteroppgaven omhandler rigid-rørlegging med integrerte ILT-installasjoner på TechnipFMCs «reel-lay» skip Deep Energy på grunt vann. Rigide rørledninger og installasjoner har blitt studert i et bredt og generelt ... -
Sea trout in Norway and the Kerguelen Islands
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Sea Water Drilling Fluid Interphase during Riserless Drilling
(Master thesis, 2010)The unique challenges of offshore drilling, unable to be overcome by conventional drilling approaches, have forced the industry to aggressively pursue alternative methods to the “pump and dump” top hole drilling, which ... -
SeaArm - A Subsea Multi-Degree of Freedom Manipulator for Small Observation Class Remotely Operated Vehicles
(Chapter, 2018)This paper presents the design of a novel low cost 4DOF fully electric subsea manipulator for small work class ROVs. The manipulator is designed to work on a wide range of typical observation class ROVs ranging from 5 kg ... -
SeaArm-2 - Fully electric underwater manipulator with integrated end-effector camera
(Chapter, 2021)This paper presents an electrically driven underwater manipulator named SeaArm-2 and considers the kinematic control approach to perform autonomous fixed-base grasping of an object of known size and shape at unknown positions ... -
Seabird Migration Strategies: Flight Budgets, Diel Activity Patterns, and Lunar Influence
(Peer reviewed; Journal article, 2021)Every year, billions of birds undertake extensive migrations between breeding and non-breeding areas, facing challenges that require behavioural adjustments, particularly to flight timing and duration. Such adjustments in ... -
Seabirds as guides for fisheries management: European shag Phalacrocorax aristotelis diet as indicator of saithe Pollachius virens recruitment
(Journal article; Peer reviewed, 2018)In fisheries management, assessing year-class strength and recruitment to commercial stocks is essential, but can be difficult to do for fish species where the young stages are inaccessible to ship-based surveys. This is ... -
Seabirds during Arctic Polar Night: underwater observations from Svalbard archipelago, Norway
(Journal article; Peer reviewed, 2017)Visually-oriented predators, such as seabirds, are highly light dependent, and thus their presence and activity under continuously dark conditions of Arctic polar night pose a number of questions about the strategies and ... -
“Seafarers should be navigating by the stars”: barriers to usability in ship bridge design
(Peer reviewed; Journal article, 2022)Navigating a ship is a complex task that requires close interaction between navigators and technology available on the ship’s bridge. The quality of this interaction depends on human and organisational factors, but also ...