Browsing Institutt for marin teknikk by Title
Now showing items 2419-2438 of 3431
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Operational limits for floating-collar fish farms in waves and current, without and with well-boat presence
(Doctoral theses at NTNU;2018:367, Doctoral thesis, 2018)Dynamic response of a floating circular collar-type fish farm, without and with well-boat presence, in current, regular and irregular waves is analyzed. A modern design well boat and a realistic fish farm (with single cage) ... -
Operational profiles of ships in Norwegian waters: An activity-based approach to assess the benefits of hybrid and electric propulsion
(Journal article, 2018)Various regulations are imposed on shipping to increase energy efficiency and reduce environmental impacts. Alternative fuels and power systems are among the solutions for compliance with these regulations. The power system ... -
Operational Risk in the Norwegian Barents Sea
(Master thesis, 2013)With the estimated increase in demand for energy in the World by one-third within the next 25 years, the findings and estimates in the Arctic are of great importance. Equipment, procedures, training, facilities, logistics, ... -
Operational Safety: "The Platform Manager's Risk Control Tool"
(Master thesis, 2013)Avoiding accidents is important, especially in the petroleum industry where the outcome of a major accident can be serious harm to both people, the environment and to company property. There are requirements from the ... -
Operational sea passage scenario generation for virtual testing of ships using an optimization for simulation approach
(Peer reviewed; Journal article, 2020)In this paper, a model for implementation of sea passage operational scenarios in the context of simulation-based design of ships is presented. To facilitate the transition towards more energy-efficient shipping, the ability ... -
Opportunities for increased profit and reduced cost and emissions by service differentiation within container liner shipping
(Journal article; Peer reviewed, 2016)This paper investigates opportunities for increased profit and reduced emissions and cost by service differentiation within container shipping. Traditionally the strategy among the container lines has been profit maximization ... -
Optical Techniques for Hyperspectral Imaging of the Seafloor
(Doctoral theses at NTNU;2023:267, Doctoral thesis, 2023) -
Optimal Actuator Placement for Real-Time Hybrid Model Testing Using Cable-Driven Parallel Robots
(Peer reviewed; Journal article, 2021)In real-time hybrid model testing, complex ocean structures are emulated by fusing numerical modelling with traditional hydrodynamic model testing. This is done by partitioning the ocean structure under consideration into ... -
Optimal configuration of supply logistics for remote oil and gas fields
(Master thesis, 2013)The objective of this thesis has been to compare alternatives to improve the supply service for remote locations offshore. First the alternative of running a conventional supply service has been assessed, where the platform ... -
Optimal configuration problem identification of electrical power cable in tidal turbine farm via traveling salesman problem modeling approach
(Peer reviewed; Journal article, 2019)Electrical power cables in tidal turbine farms contribute a significant share to capital expenditure (CAPEX). As a result, the routing of electrical power cables connecting turbines to cable collector hubs must be designed ... -
An Optimal Energy Management System for Marine Hybrid Power Systems
(Chapter, 2021)This paper proposes an optimal control strategy for the energy management system (EMS) of marine hybrid power systems with the objective of reducing operational expenses (OPEX) and environmental emissions. Here, the OPEX ... -
Optimal Force Allocation for Overconstrained Cable-Driven Parallel Robots: Continuously Differentiable Solutions With Assessment of Computational Efficiency
(Peer reviewed; Journal article, 2020)In this article, we present a novel method for force allocation for overconstrained cable-driven parallel robot setups that guarantees continuously differentiable cable forces and allows for small penalized errors in the ... -
Optimal Hub-Solution for Remote Field Development in Arctic
(Master thesis, 2015)This report present a new solution method to analyze usage of hub-vessels in upstream logistics for remote fields. The objective in this thesis is to analyze which parameters that affect the logistics chain for remote ... -
Optimal location of ammonia replenishment to support the Northeast Asia - US Pure Car Carrier green corridor
(Master thesis, 2023)Skip er regnet som den mest kostnadseffektive metoden for frakt av varer rundt om i verden. Omtrent 80% av den globale verdenshandelen foregår i dag på sjøen og denne formen for transport er i stor grad drevet på tungolje, ... -
Optimal Location of Energy Replenishment Stations for Zero-Emission Vessels
(Master thesis, 2022)For å muliggjøre det grønne skiftet innen sjøtransport, så må nullutslippsenergibærere tas i bruk av industrien. En betydelig utfordring for noen av nullutslippsenergibærerne (f.eks. hydrogen) er energilagringskapasitet. ... -
Optimal Online Configuration and Load-Sharing in a Redundant Electric Power System for an Offshore Vessel Using Mixed Integer Linear Programming
(Chapter, 2018)This paper proposes several schemes for optimal online configuration and load sharing for a shipboard power system of a typical offshore vessel, having a number of varying capacity gensets. Different methods are presented ... -
Optimal path-planning on a bio-inspired neural network guidance model for autonomous surface vessels
(Master thesis, 2020)Planlegging av en trygg og kollisjonsfri bane er avgjørende når graden av autonomi i skip øker. Det gjøres med utgangspunkt i en modell av omgivelsene, som her har vært i form av et bio-inspirert nevralt nettverk. En ... -
Optimal Placement of Offshore Refueling Facilities in Green Corridors
(Master thesis, 2023)Denne avhandlingen undersøket konseptet grønne korridorer og offshore bunkeringsstruktur, og undersøker spesielt optimal plassering av faste og dynamiske offshore bunkeringsfasiliteter for potensielle grønne korridorer. ... -
Optimal posisjonering med tanke på fiskevelferd for Havfarm 2
(Master thesis, 2019)Denne masteroppgaven tar for seg et mulig problem med vannkvaliteten for laksen i det bakerste buret i Havfarm 2. Havfarm 2 er et ukonvensjonelt akvakulturanlegg, designet for dynamisk posisjonering, som for øyeblikket ... -
Optimal Positioning of Emergency Preparedness Assets based on Dynamic Traffic Situation
(Master thesis, 2015)The objective of this thesis is to create a method that utilizes mathematical models and tools to measure the threat posed to the environment by the merchant traffic along the Norwegian coast. This is done so that operators ...