Browsing Institutt for marin teknikk by Title
Now showing items 2972-2991 of 3473
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SPAR Type Offshore Wind Turbine Subjected to Ship Impacts
(Master thesis, 2021)Et økende fokus på fornybar energi har ført til en rask utvikling av havvindindustrien de siste årene. For å takle det økende kraftbehovet økes størrelsen av vindturbinene og de flyttes lenger offshore. Det fører til at ... -
Spar-type vertical-axis wind turbines in moderate water depth: A feasibility study
(Journal article; Peer reviewed, 2018)The applications of floating vertical-axis wind turbines (VAWTs) in deep water have been proposed and studied by several researchers recently. However, the feasibility of deploying a floating VAWT at a moderate water depth ... -
Spare Parts Evaluation in the Oil and Gas Industry
(Master thesis, 2015)The main objective of this master thesis is to develop a generic spare parts evaluation process flow based on NORSOK Z-008 and the daily practice in the Norwegian oil and gas industry. Additionally, a case study has been ... -
Spare Parts Management Methodology Development and Cost Evaluation - For offshore production facilities
(Master thesis, 2017)In the aftermath of the drop in oil price in 2014, the global energy industry has been in constant search for new business areas and more cost efficient solutions in order to stay competitive. The industry quickly recognized ... -
Spatial variations in wave conditions at aquaculture sites
(Master thesis, 2020)Målet med denne Masteroppgaven er å undersøke romlig variasjon av bølgeforhold på et havbruksanlegg, og å prøve å finne ut om romlig variasjon kan ha en effekt på påliteligheten til lokalitetsundersøkelser slik de gjøres ... -
Spatio-temporal variation in sea state parameters along virtual ship route paths
(Peer reviewed; Journal article, 2021)The article presents a study investigating the level of variation in sea state parameters encountered by sailing ships crossing the oceans. The sea state parameters have been obtained from a reanalysis, in this case the ... -
Species separation efficiency and effect of artificial lights with a horizonal grid in the Basque bottom trawl fishery
(Peer reviewed; Journal article, 2022)Achieving effective size selectivity for different species within a fishing gear is a major challenge in mixed fisheries. Fish behaviour may be exploited to separate species into separate codends where different selective ... -
Specifying performances for Best Available Technique (BAT) evaluations in offshore developments
(Master thesis, 2010)The Climate and Pollution Agency (Klif) consider target of national environmental policies when determining which abatement costs are cost-effective. They demand transparent cost/benefit evaluations from operators when ... -
Spectral wave modelling for determining wave exposure in Norwegian aquaculture
(Master thesis, 2021)Det ble utført en sensitivitetsstudie på bølgemodellen SWAN, slik den blir brukt for lokalitetsanalyser i norsk akvakultur. To lokasjoner ble valgt for studien. På begge lokasjonene var lokalitetsanalyser allerede gjennomført ... -
Speed and powering prediction for ships based on model testing
(Master thesis, 2012)The ITTC78 method was originally designed for conventional single screw ships, but has later been modified to adapt twin screw ships and podded propulsors. Nowadays even more unconvensional propulsors are introduced, and ... -
Stability Assessment of a Semisubmersible Floating Offshore Wind Turbine
(Master thesis, 2024)Den økende etterspørselen etter fornybar energi har ledet til større interesse for utvikling av flytende havvindturbiner. Havvindparker tilbyr muligheten til å utnytte omfattende områder med stabil vind, noe som gjør dem ... -
Stability assessment of anchor handling vessels during operations
(Journal article; Peer reviewed, 2018)To ensure safety in anchor handling operations, maintaining anchor handling vessel stability is recognized as a critical and complex task. The vessel’s stability depends primarily on the vessel’s design and operational ... -
Stability Monitoring during Ice Accretion
(Master thesis, 2015)Abstract The aim of this study is to link the impact of ice accretion on ship motion with its impact on static stability. If such links are demonstrated, ship motion may be applied in more basic and affordable stability ... -
State-of-the-art design methods for wind turbine towers
(Master thesis, 2015)The costs of wind energy have to be reduced in order to be competitive with conventional methods to generate electricity. The tower costs contribute significantly to the costs of a wind turbine. This thesis aims to suggest ... -
State-of-the-Art on Artificial Intelligence for Risk-based Decision-making in Autonomous Marine Vehicles
(Chapter, 2020)Risk assessment (i.e., risk analysis and risk evaluation) is routinely performed in marine operations by vessel crews to inform and support the decision-making process for the ship’s operations. With the inevitable ubiquity ... -
State-of-the-Art Review of Vortex-Induced Motions of Floating Offshore Wind Turbine Structures
(Peer reviewed; Journal article, 2022)The motivation for this study is the fast development of floating offshore wind energy and the immature methodology and engineering practice related to predictions of vortex-induced motions (VIM). Benefiting from the oil ... -
Static analysis of interaction between two adjacent top tensioned risers with consideration of wake effects
(Peer reviewed; Journal article, 2019)Collision between adjacent risers has become an important issue as the oil and gas industry moves to deeper waters. In order to estimate the clearance between two marine risers, a static analysis which is mainly concerned ... -
Static and dynamic analysis of an offshore aquaculture structure
(Master thesis, 2024)Havbruksindustrien opplever en stor økning i etterspørselen etter sjømat. Tradisjonelle havbruksanlegg opplever utfordringer knyttet til, ledige områder, fiskehelse og miljøpåvirkning, utviklingen av offshore havbruk anses ... -
Station-Keeping using Deep Learning
(Master thesis, 2019)Denne oppgaven undersøker muligheten for å skape en kontroller for et fjernstyrt undervannsfartøy (ROV) med en dyp forsterkningsinlæringsmetode, nærmere bestemt ved hjelp av en Proximal Policy Optimisation (PPO) ... -
Statisk og Dynamisk Responsanalyse av Salmar Offshore Havbruksanlegg
(Master thesis, 2019)Den norske havbruksnæringen har nådd et punkt der videre vekst av næringen ikke lenger ansees som bærekraftig. Samtidig er næringen forventet å produsere større kvanta for å mate den stadig voksende verdensbefolkningen. ...