Blar i Institutt for marin teknikk på tittel
Viser treff 1907-1926 av 3429
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Low-Cost Observer and Path-Following Adaptive Autopilot for Ships
(Master thesis, 2017)In this thesis a signal-based observer and a path-following autopilot design will be derived and implemented on the model vessel C/S Enterprise I. Using scaling methods the goal is to transfer the controllers into a full ... -
Low-frequency dynamic wake meandering: comparison of FAST.Farm and DIWA software tools
(Journal article; Peer reviewed, 2021)Most of the global dynamic response models used today for the design of wind turbines are based on the aero-hydro-servo-elastic analysis of one single turbine. However, research on bottom- fixed offshore wind turbines has ... -
Low-Frequency Hydrodynamic Modeling of a 12 MW Semi-Submersible Wind Turbine
(Master thesis, 2021)INO WINDMOOR-plattformen er en semi-submersible konstruksjon for å støtte en 12 MW vindturbin. Dens naturlige frekvenser i bølge og tonehøyde er under frekvensene til typisk bølgeenergi, og store resonansbevegelser kan ... -
Low-frequency oscillations in flow past an inclined prolate spheroid
(Journal article; Peer reviewed, 2019)We analyse the forces on a 45∘ inclined 6:1 prolate spheroid at Reynolds number ReD = 8000. In contrast to flow at lower Reynolds numbers previously investigated, we now find a strong oscillatory behaviour in the global ... -
Lowering and lifting operations through moonpools: Hydrodynamic investigations
(Master thesis, 2014)On construction vessels subsea modules, diving bells, cables and so on are often lifted through a moonpool. The advantage of using a moonpool is that the surface elevation inside the moonpool is shielded against the outside ... -
Lowering operation of a subsea module using air filled suction anchors to reduce the crane load capacity required.
(Master thesis, 2010)The Ormen Lange gas field is located 120 km west-north west of Kristiansund, and went in to production in October 2007. The field is planned to be developed throughout 2015 including the installation of a subsea compression ... -
M.o.T. Mobilmelker og Torsk
(Bachelor thesis, 2023)Dagens situasjon på ODE sitt gjennomstrømninganlegg for torsk på Stadsbygd gjennomføres røkting av fiskekar ved et hevertsystem. På grunn av lave strømningshastigheter i karene fører dette til oppsamling av partikler på ... -
Machinery vibrations in the Skjold class of MTB's
(Master thesis, 2011)During test and verification of the Norwegian Navy’s fast patrol boat KNM Storm some problems with the lift fan machinery have been experienced. The problem observed is that occasionally, triggered by the firing of the 76 ... -
Main bearings in large offshore wind turbines: development trends, design and analysis requirements
(Journal article; Peer reviewed, 2018)This paper discusses analysis requirements for design and operation of main bearings in modern multi-megawatt offshore wind turbines, motivated by the industry's search for reliable and cost effective main bearing solutions ... -
Maintenance of petroleum process plant systems as a source of major accidents?
(Journal article; Peer reviewed, 2016)The prevention of hydrocarbon leaks is of great importance as they are the most critical precursor events that may lead to major accidents on petroleum facilities. Maintenance of process components on offshore and onshore ... -
Maintenance Planning and Optimization of Feed System and Camera System used in Norwegian Aquaculture - Using RCM approach to construct a maintenance program
(Master thesis, 2017)There is an increasing global demand for seafood consumption. Fish farms in Norway has gradually moved to more exposed sites due to competition with other coast-based industries. Sea based aquaculture occupation is one of ... -
Maintenance strategies for deep sea offshore wind turbines
(Journal article; Peer reviewed, 2010)Purpose – The objective of this paper is to outline a framework that guides the development of sound maintenance strategies and policies for deep‐sea offshore wind turbines. Design/methodology/approach – An important ... -
Major accident prevention illustrated by hydrocarbon leak case studies: A comparison between Brazilian and Norwegian offshore functional petroleum safety regulatory approaches
(Journal article; Peer reviewed, 2020)Despite laws, regulations, or risk management tools designed to avoid loss events, a hydrocarbon leak (HCL) in an offshore oil and gas platform1 is a major hazard event that reveals failures in risk control. In addition, ... -
Major Accidents in Exposed Fish Farming - A quantitative collision risk analysis
(Master thesis, 2018)The Norwegian aquaculture industry has had a large increase in activity over the last years, and the expansion is expected to continue in the years to come. However, a further expansion of traditional fish farming is not ... -
Major accidents in Norwegian fish farming
(Journal article; Peer reviewed, 2019)The Norwegian fish farming industry is experiencing accidents that may have serious consequences for fish-farm operators, the environment, and the farmed fish themselves. Fatalities and serious personnel injuries, mass ... -
Making sense of speed effects on ice crushing pressure-area relationships in IACS ice-strengthening rules for ships
(Journal article; Peer reviewed, 2021)Arctic shipping fleet expansion is anticipated in the future. However, future refinements in the understanding of ice loads on larger ships are needed to achieve a better structural design with reduced steel weight. Published ... -
Maneuvering and direction stability in restricted waters
(Master thesis, 2023)Denne avhandlinga kastar lys over den siste utviklinga innan manøvrerbarheit og retningstabilitet i avgrensa farvatn. Nyleg vart dette emnet kjent for offentlegheita då tankskipet Ever Given grunnstøtte diagonalt i ... -
Maneuvering and Seakeeping of a Single Ship and of Two Ships in Interaction
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:55, Doctoral thesis, 2008)The main objective of this thesis has been to study the maneuvering and seakeeping of two interacting ships. A systematic approach is adopted. First, the maneuvering behaviour of a single ship in regular waves was considered. ... -
Maneuvering of two Interacting Ships in Calm Water
(Chapter, 2010)The maneuvering of two interacting ships in calm water at Froude numbers less than ~0.2 and in water of infinite horizontal extent is studied based on an extended version of the maneuvering model for two ships by Skejic ... -
Maneuvering of two interacting ships in waves
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:361, Doctoral thesis, 2012)This thesis describes the development of a module based maneuvering prediction system for one ship or two interacting ships in calm water or waves. The work is a continuation and generalization of the previous work of ...