Blar i Publikasjoner fra CRIStin - NTNU på emneord "Arctic Technology"
Viser treff 1-14 av 14
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A method for real-time estimation of full-scale global ice loads on floating structures
(Journal article; Peer reviewed, 2018)This paper proposes an algorithm that uses conventional measurements found on-board ships coupled with additional Inertial Measurement Units to estimate the motions and global loads acting on them. The work is motivated ... -
A Multibeam-Based SLAM Algorithm for Iceberg Mapping Using AUVs
(Journal article; Peer reviewed, 2018)Using autonomous underwater vehicles (AUVs) for mapping underwater topography of sea-ice and icebergs, or detecting keels of ice ridges, is foreseen as enabling technology in future Arctic marine operations. Wind, current, ... -
An Ice-Drift Estimation Algorithm Using Radar and Ship Motion Measurements
(Journal article; Peer reviewed, 2018)This paper presents a novel automatic real-time remote sensing algorithm that uses radar images and global positioning satellite system measurements to estimate the ice-drift velocity vector in a region around a free-floating ... -
Artificial intelligence for ship speed management during navigation in the Arctic
(Peer reviewed; Journal article, 2021)Difficult ice conditions are one of the major threats to ships, shipboard crew, and cargoes carried in Arctic waters. Ship-speed choice is influenced by many factors including the navigational conditions (ice, weather, ... -
Automatic image segmentation for boundary detection of apparently connected sea-ice floes
(Chapter, 2013)Ice concentration, ice types, and floe size distribution are three important factors in the analysis of ice-structure interaction in a broken ice field. The use of cameras as sensors for offshore operations in ice-covered ... -
Distributed sensing of loads acting against the hull of a stationkeeping vessel in ice
(Chapter, 2018)This paper introduces the concept of distributed motion sensing for stationkeeping vessels in ice infested waters. During the SKT 2017 project, conducted in February and March 2017 in the Bay of Bothnia, five inertial ... -
Glacial ice impacts: Part II: Damage assessment and ice-structure interactions in accidental limit states (ALS)
(Peer reviewed; Journal article, 2021)Floating glacial ice features of various sizes pose a substantial threat to the structural integrity of offshore structures in ice-prone regions. Relatively small ice feathers, e.g., bergy bits and growlers, are a major ... -
Hybrid causal logic model for estimating the probability of an icebreaker–ship collision in an ice channel during an escort operation along the Northeast Passage
(Peer reviewed; Journal article, 2023)Under severe Arctic ice conditions, escort operations are the most efficient methods for facilitating shipping. Nevertheless, escort operations are among the most dangerous operations, as they may result in icebreaker–ship ... -
Ice condition assessment using onboard accelerometers and statistical change detection
(Journal article; Peer reviewed, 2019)The presence of sea ice is the predominant risk for ship operations in the Arctic, and monitoring of ice condition around a vessel is crucial during all times of operation. This paper presents a system for online onboard ... -
Ice management and design philosophy
(Chapter, 2018)Ice management (IM) is defined as all activities carried out with the objective of mitigating hazardous situations by reducing or avoiding actions from any kind of ice feature to a protected unit (e.g. a drilling vessel) ... -
Minimum requirements to ice management barrier systems
(Journal article; Peer reviewed, 2019)Ice management (IM) is defined as all activities carried out with the objective of mitigating hazardous situations by reducing or avoiding actions from any kind of ice features to a protected unit (e.g. a drilling vessel). ... -
Multi Modal Mapping of Sea Ice Fields From Remote Shipborne Instrumentation
(Chapter, 2024)This work investigates the perception bias caused by ice floes occluding open water regions behind them when analyzing sea ice from shipborne cameras. We propose a method to model this effect by predicting an occlusion ... -
Numerical assessment of a double-acting offshore vessel's performance in level ice with experimental comparison
(Journal article; Peer reviewed, 2014)In this paper a numerical model is used to investigate the level ice performance of a double-acting intervention vessel, and the results are compared with a limited set of experimental data. The icebreaking capability and ... -
Time-frequency analysis of acceleration data from ship-ice interaction events
(Journal article; Peer reviewed, 2018)During operations with ships in ice-infested waters, vibrations of the hull occur due to ship-ice interaction. The acting ice load and the induced vibrations depend on the ice regime and ice breaking mechanism. Especially ...