• A Multibeam-Based SLAM Algorithm for Iceberg Mapping Using AUVs 

      Norgren, Petter; Skjetne, Roger (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 

      Kjerstad, Øivind Kåre; Løset, Sveinung; Skjetne, Roger; Skarbø, Runa A. (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 

      Kim, Ekaterina; Skjetne, Roger (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 

      Zhang, Qin; Skjetne, Roger; Su, Biao (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 ...
    • Ice condition assessment using onboard accelerometers and statistical change detection 

      Heyn, Hans-Martin; Blanke, Mogens; Skjetne, Roger (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 

      Ruud, Stian Knud; Skjetne, Roger (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 

      Ruud, Stian Knudsen (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). ...
    • Time-frequency analysis of acceleration data from ship-ice interaction events 

      Heyn, Hans-Martin; Skjetne, Roger (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 ...