Browsing Øvrige samlinger by Journals "Ocean Engineering"
Now showing items 41-60 of 178
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Determinants, methods, and solutions of evacuation models for passenger ships: A systematic literature review
(Peer reviewed; Journal article, 2022)Passenger ships facilitate the mobility of people at sea and are a significant revenue stream for societies. Simultaneously, they should meet safety standards. One of the main safety pillars is offering passengers a reliable ... -
Determination of extreme responses of USFG’s equilibrium glide path hovering in ocean current
(Journal article; Peer reviewed, 2022) -
Development and application of a simulator for offshore wind turbine blades installation
(Journal article, 2018)In an offshore environment, offshore wind energy resources are more available and stable, but the investment cost is much higher than that of onshore wind. The installation cost is a crucial factor of the investment. With ... -
Development and experimental evaluation of visual-acoustic navigation for safe maneuvering of unmanned surface vehicles in harbor and waterway areas
(Peer reviewed; Journal article, 2023)Ship maneuvering in narrow harbor environments requires accurate navigation data to operate safely. Since Global Navigation Satellite Systems (GNSS) can be unreliable and inaccurate in such environments, other aiding ... -
Development and validation of speed loss for a blunt-shaped ship in two rough sea voyages in the Southern Hemisphere
(Journal article; Peer reviewed, 2017)Maritime transportation is becoming increasingly complex owing to the fluctuation of oil prices, the introduction of environmental guidelines, and the onset of climate change. Although optimal routing has been researched ... -
Development of risk indicators for losing navigational control of autonomous ships
(Peer reviewed; Journal article, 2022)As autonomous ships become more viable, appropriate risk indicators are increasingly needed. In the existing literature, few works are related to developing such risk indicators. Existing indicators are general and not ... -
Discussion of assumptions behind rule-based ice loads due to crushing
(Journal article; Peer reviewed, 2016)Forecasts and trends indicate an increase in marine operations in polar waters. The design of new ships for severe polar conditions is usually solved via theoretical considerations that are combined with previous experience ... -
Discussion/comments regarding "Sea spray icing phenomena on marine vessels and offshore structures: Review and formulation" by A.R. Dehghani-Sanij, S.R. Dehghani, G.F. Naterer, Y.S. Muzychka
(Journal article; Peer reviewed, 2017)The purpose of this discussion is to demonstrate how the formula for the liquid water content in wind-generated seawater spray presented by Dehghani-Sanij et al. (2017) in conjunction with available wind speed statistics ... -
Dominant parameters for vortex-induced vibration of a steel catenary riser under vessel motion
(Journal article; Peer reviewed, 2017)Recent research has confirmed a new type of vortex-induced vibration (VIV) in steel catenary risers (SCRs), purely caused by vessel motion. Vessel motion-induced VIV occurs because the SCR is exposed to the equivalent ... -
Dynamic behavior of subsea wellhead and shallow pipe under seismic action
(Peer reviewed; Journal article, 2022)The interaction between shallow pipe and soil near the subsea wellhead is an important factor in the maintenance of subsea wellhead stability. First, a seismic test was conducted. A shaking table and a shear model box were ... -
Dynamic Positioning using Deep Reinforcement Learning
(Journal article; Peer reviewed, 2021)This paper demonstrates the implementation and performance testing of a Deep Reinforcement Learning based control scheme used for Dynamic Positioning of a marine surface vessel. The control scheme encapsulated motion control ... -
Dynamic probabilistic risk assessment of decision-making in emergencies for complex systems, case study: Dynamic positioning drilling unit
(Peer reviewed; Journal article, 2021)Decision-making in emergency situations is a risky and uncertain process due to the limited information and lack of time. Some key problem parameters, such as the time required to complete important response tasks, must ... -
Effect of floater flexibility on global dynamic responses of a 15-MW semi-submersible floating wind turbine
(Peer reviewed; Journal article, 2023)Floater structural flexibility plays a significant role in accurate predictions of global dynamic responses of floating wind turbines (FWTs), especially for ultra-large wind turbines with increasing size and cost-effective ... -
Effect of low temperature on fatigue crack propagation rates of DH36 steel and its butt weld
(Peer reviewed; Journal article, 2019)As common marine steel for polar ships, the fatigue crack propagation rates of DH36 steel at low temperature have a crucial influence on the evaluation of the fatigue strength of polar ships. The purpose of this paper is ... -
Effect of wave inhomogeneity on fatigue damage of mooring lines of a side-anchored floating bridge
(Peer reviewed; Journal article, 2020)Mooring systems are important structural components of very long floating bridges. They effectively limit the transverse motions of the bridge under environmental loads. They also add viscous hydrodynamic damping to the ... -
An Efficient Method for Design and Powering Prediction of Fast Slender Catamarans
(Journal article; Peer reviewed, 2023)This paper presents a parameterized and mathematically defined hull shape that can be tuned to represent modern passenger fast ferries. Additionally, a resistance calculation model for high-speed slender round-bilge ... -
An Efficient Method for Unsteady Hydrofoil Simulations, based on Non-Linear Dynamic Lifting Line theory
(Journal article; Peer reviewed, 2023)This paper presents a Non-linear Dynamic Lifting Line (NDLL)-based method for analysing hydrofoil vessels in waves. The method is validated, and its utility is demonstrated in a case study. The NDLL accounts for dynamic ... -
Efficient prediction of wind and wave induced long-term extreme load effects of floating suspension bridges using artificial neural networks and support vector machines
(Journal article; Peer reviewed, 2020)Long-term extreme load effects are one of the primary concerns in the design of civil and offshore structures. Such load effects can be evaluated using the accurate but computationally demanding full long-term method or ... -
An environmental disturbance observer framework for autonomous surface vessels
(Peer reviewed; Journal article, 2023)This paper proposes a robust disturbance observer framework for maritime autonomous surface vessels considering model and measurement uncertainties. The core contribution lies in a nonlinear disturbance observer, reconstructing ... -
Evaluation of speed loss in bulk carriers with actual data from rough sea voyages
(Journal article; Peer reviewed, 2019)The evaluation of speed loss is the most important studies in the optimal ship routing. However, the mode of speed loss during rough sea voyages is complicated because of the involvement of the human factor. A speed loss ...