Institutt for marin teknikk
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Risk-based supervisory control for autonomous ship navigation
(Peer reviewed; Journal article, 2023)This paper proposes a novel method to transform the results of qualitative risk analysis into a numeric optimal control problem for autonomous ship navigation. Today, making autonomous high-level decisions replacing a crew ... -
Extensive hydro-elastic floating bridge tests: Planning, design, implementation, and numerical comparison
(Peer reviewed; Journal article, 2023)Extensive hydrodynamic and hydro-elastic tests for a long floating bridge have been carried out in the ocean basin of SINTEF Ocean for the Bjørnafjord floating bridge project. The complexity of the floating bridge plus ... -
Retrieval of Ocean Wave Spectra From X-Band Marine Radar Images Using Inversion Schemes Based on Auto-Spectral Analysis
(Chapter, 2023)Estimation of ocean wave conditions is extremely crucial for the planning and execution of demanding marine operations. Further, the Response Based Decision-Making requires accurate wave inputs to derive the responses using ... -
Integration Test Procedures for a Collision Avoidance Decision Support System Using STPA
(Peer reviewed; Journal article, 2023)The transition from conventionally manned to autonomous ships is accompanied by the development of enhanced Decision Support Systems (DSS) for navigators. Such systems need to consider interactions among hardware, software, ... -
Four Degree-of-Freedom Hydrodynamic Maneuvering Model of a Small Azipod-Actuated Ship With Application to Onboard Decision Support Systems
(Peer reviewed; Journal article, 2023)The main contribution of this paper is a numerical ship motion model of NTNU’s research vessel Gunnerus, capturing the surge, sway, roll, and yaw dynamics when sailing in uniform and steady currents. The model utilizes a ... -
Gradient-Based Design Optimization of Fully-Flexible Floating Wind Turbines Using Modal Analysis
(Chapter, 2023)A variety of substructure concepts for floating offshore wind have been developed. Design optimization can be used to efficiently explore this design space and guide further work. Previous design optimization studies have ... -
Hydroelasticity analysis of a vessel-shaped fish cage under incident, diffraction and radiation wave fields
(Peer reviewed; Journal article, 2023)Vessel-shaped fish cages are promising large aquaculture structures developed in recent years, with an overall length of nearly 400 m. In this paper, a coupled hydroelasticity model of a vessel-shaped fish cage is used to ... -
How vortex dynamics affects the structural load in step cylinder flow
(Journal article; Peer reviewed, 2023)The vortex dynamics and the structural load in a step cylinder (consisting of a small, d, and a large, D, cylinder) flow are investigated numerically at Reynolds number (ReD) 150 for diameter ratios D/d=2.0,2.4 and 2.8. ... -
Coexistence of natural and forced vortex dislocations in step cylinder flow
(Journal article; Peer reviewed, 2023) -
A Survivability Analysis of Two Floating Offshore Wind Turbines in Intact and Damaged Conditions
(Master thesis, 2023)Vindenergi identifiseres som en del av løsningen for å tilby tilstrekkelig bærekraftig, trygg og sikker fornybar energi. Ettersom det er begrenset med passende områder på land eller nær kysten, er det et behov for flytende ... -
Use of response forecasting in decision making for weather sensitive offshore construction work
(Peer reviewed; Journal article, 2023)Response forecasting is an emerging technology for supporting decision-making during offshore construction work. The method aims to improve the reliability and efficiency of weather-sensitive operations. This article ... -
Enabling intelligent multi-modular concept for solar energy harvest by local control of connectors.
(Master thesis, 2023)Bruken av flytende multi-modulære strukturer har potensial til å bidra betydelig til å oppnå netto nullutslipp. Imidlertid er disse strukturene fortsatt i en tidlig utviklings fase og det kreves ytterligere forskning. Denne ... -
Effectiveness of Offshore Maintenance Bases in Norwegian Offshore Wind
(Master thesis, 2023)Den norske regjeringen har ambisjoner for en storstilt utvikling av havvind. For å nå målet er det nødvendig å redusere kostnader, spesielt for flytende havvind. Det er forventet at kostnader tilknyttet havvind vil reduseres ... -
Wave dispersion in moderate channel turbulence
(Peer reviewed; Journal article, 2023)We study channel turbulence by interpreting its vorticity as a random sea of ocean wave packet analogues. In particular, we investigate the ocean-like properties of vortical packets applying stochastic methods developed ... -
Simulator Approach to Concept Analysis and Optimization of Marine Power Plants
(Doctoral theses at NTNU;2023:236, Doctoral thesis, 2023)The strict environmental regulations for the marine sector directed the research studies and industries to develop solutions in compliance with new goals of promoting efficiency and decreasing emissions. Among the solutions, ... -
Retrofitting a Deep Sea Shipping Fleet; Keeping Up With Regulatory Emissions Targets
(Master thesis, 2023)Denne masteroppgaven belyser en presserende global utfordring, nemlig behovet for å kutte klimagassutslipp i internasjonal skipsfart. Selv om rundt 90% av den internasjonale godstrafikken skjer via dyphavsskipsfart, er det ... -
Competitive Engineering to Order (CtO) Ship Design and Production – the Norwegian way
(Master thesis, 2023)Skiproduksjon har opplevd økt konkurranse de siste tiårene, med lavkostland som Tyrkia og India som konkurrerer mot høykostland som Norge, spesielt når det gjelder konstruksjon av store og komplekse strukturer som skipsskrog. ... -
Verification of Collision Avoidance Utilizing Data-driven Fuzzy Logic
(Master thesis, 2023)In all the hazardous accidents at sea, ship collision is always the most frequent one. It has been paid great attention, and International Regu- lations for Preventing Collisions at Sea (COLREG) are being complied with. ... -
Development of a reliability model for crack growth occurrence for a secondary hull component
(Peer reviewed; Journal article, 2023) -
Remote Operation of Marine Robotic Systems and Next-Generation Multi-Purpose Control Rooms
(Peer reviewed; Journal article, 2023)Since 2017, NTNU’s Applied Underwater Robotics Laboratory has been developing an infrastructure for remote marine/subsea operations in Trondheim Fjord. The infrastructure, named the OceanLab subsea node, allows remote ...
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