Print Email Facebook Twitter Collision risk assessment in coastal waters Title Collision risk assessment in coastal waters Author Grossmann, Martin (TU Delft Mechanical, Maritime and Materials Engineering) Contributor Kana, Austin (graduation committee) Hopman, Hans (mentor) Hassel, Martin (mentor) Degree granting institution Delft University of Technology Date 2019-10-23 Abstract The amount of international shipped cargo grows steadily, and seas are exploited for seabed mining and energy production more than ever. As a result, there is an increase in traffic density and decrease in free navigational space, potentially causing a higher incidence of dangerous navigation situations that may lead to ship collisions. This thesis establishes a hypothesis that there are coastal areas where the risk of collision is unexplored and abnormally high and has not been analysed yet. Therefore, the thesis aims to develop a method suitable to assess the risk of collision in coastal waters. A thesis literature review primarily focuses on the current collision risk assessment methods, circumstances of collisions, and sources of navigational information for coastal waters. The literature review concludes that a promising and novel approach is to detect near-collision situations based on the data from the Automatic Identification System (AIS). The near-collision exists when a ship's safety domain is violated and, simultaneously, the ship performed a last-moment evasive manoeuvre, which is identified by an abnormal ship's rate of turn. Building on a previous basic version of the near-collision detection method and AIS data provided by Safetec Nordic AS, this thesis develops a collision risk assessing tool that significantly outperforms the original method. The performance of the designed method was evaluated using AIS data from the Vestfjorden area in Norwegian coast during 2013-2015. The case study shows that this approach effectively detects near-collision situations but identifies a considerable number of new false near-collisions. The details and spatial distribution of detected near-collisions provide valuable insight into navigational areas vulnerable to collisions, collision circumstances, and frequency of collisions. Subject risk assessmentCollision detectionAutomatic Identification Systemcoastal areasnear-collision To reference this document use: http://resolver.tudelft.nl/uuid:30c436c1-7727-4068-9315-383c040ba6a0 Part of collection Student theses Document type master thesis Rights © 2019 Martin Grossmann Files PDF Grossmann_thesis.pdf 6.74 MB Close viewer /islandora/object/uuid:30c436c1-7727-4068-9315-383c040ba6a0/datastream/OBJ/view