Department of Marine Traffic Engineering Renata Boć
Title: Vessel multi-parametric collision avoidance decision model: fuzzy approach
Author/Authors: Tanja Brcko, Andrej Androjna, Jure Srše, Renata Boć
Place of publication: Journal of Marine Science and Engineering
Year: 2021
Keywords: fuzzy logic, decision model, collision avoidance
Abstract: The application of fuzzy logic is an effective approach to a variety of circumstances, including solutions to maritime anti-collision problems.The article presents an upgrade of the radar navigation system, in particular, its collision avoidance planning tool, using a decision model that combines dynamic parameters into one decision—the collision
avoidance course. In this paper, a multi-parametric decision model based on fuzzy logic is proposed. The model calculates course alteration in a collision avoidance situation. First, the model collects input data of the target vessel and assesses the collision risk. Using time delay, four parameters are calculated for further processing as input variables
for a fuzzy inference system. Then, the fuzzy logic method is used to calculate the course alteration, which considers the vessel’s safety domain and International Regulations for Preventing Collisions at Sea (COLREGs). The special feature of the decision model is its tuning with the results of the database of correct solutions obtained with the
manual radar plotting method. The validation was carried out with six selected cases simulating encounters with the target vessel in the open sea from different angles and at any visibility. The results of the case studies have shown that the decision model computes well in situations where the own vessel is in a give-way position. In addition, the model
provides good results in situations when the target vessel violates COLREG rules. The collision avoidance planning tool can be automated and serve as a basis for further implementation of a model that considers the manoeuvrability of the vessels, weather conditions, and multi-vessel encounter situations.
Title: Applying simulation studies to define further development of the approach channel to Ystad
Author/Authors: Lucjan Gucma, Rafał Gralak, Jarosław Artyszuk, Renata Boć
Place of publication: Scientific Journals of the Maritime University of Szczecin
Year: 2018
Keywords: model of manoeuvring a ship, navigation safety, designing seaports, applying simulation, approach channel, PIANC method
Abstract: The increasing sizes of ships determine the interest in modifying the already existing solutions. Simulation models allow us to analyse the possible modernisation options. The article presents analysis results for the width of the fairway to Ystad, marked with buoys with respect to navigation safety. After a thorough analysis, taking into account the safety of navigation, further possibilities of development have been determined. Study results are aimed at designing new solutions in case of modernization of the approach channel to Ystad.
DOI: 10.17402/291
Title: The modernization of the Mrzezyno Seaport. Applaying simulation studies to define the variants of the
expansion of the entrance breakwater
Author/Authors: Renata Boć, Lucjan Gucma, Andrzej Bąk
Place of publication: Annual of Navigation
Year: 2017
Keywords: model of manoeuvring a ship, navigation safety, designing seaports, breakwater optimization
Abstract: Objective reasons, such as climatic changes, larger vessels, sometimes the impracticality of the current solutions,determine the interest of decision-makers in rebuilding the existingports and breakwaters. Tested simulation models allow for a thorough analysis of the possiblemodernization variants taking into account the variability of basic parameters. The article pre-sents research results related to the optimization of the Mrzezyno seaport with respect to navi-gation safety and the possibility of larger vessels calling at the port after its modernization.In the paper, real time simulation methods based on manoeuvre simulators were applied. Two different variants that can be implemented from the technical point of view were studied. Following a multidimensional analysis that took into consideration increased comfort of ship manoeuvres in the port and navigation safety, one variant was indicated as the optimum. The aim of the research results is to help design new solutions in the caseof the modernization of the Mrzezyno seaport.
Title: Applying simulation studies to define futher development of the Przemysłowy Canal in Szczecin
Author/Authors: Lucjan Gucma, Renata Boć, Andrzej Bąk
Place of publication: TransNav - The International Journal on Marine Navigation and Safety of Sea Transportation
Year: 2017
Keywords: Port Manoeuvering, Port of Szczecin, Przemyslowy Canal in Szczecin, Applying Simulation Study, Navigation
Safety, Safety of Navigation, Parameters of Waterways, Harbour Approach Channels Design
Abstract: The increasing sizes of ships and lack of functionality of the existing solutions determine the interest in rebuilding the already existing solutions. Simulation models allow to analyse the possible modernisation variants taking into account the variability of elementary parameters. The article presents analysis results for the Przemyslowy Canal in Szczecin with respect to navigation safety and regulating traffic regulations in the Przemyslowy Canal taking into consideration the interests of all subjects involved. The paper applies real-time simulation methods based on manoeuvring simulators. After a thorough analysis that took into account the safety of navigation, further possibilities of development have been determined. Study results are aimed at designing new solutions in case of modernization of the Przemyslowy Canal in Szczecin.
Title: Vessel route optimization to avoid risk of collision between carriers of dangerous goods and passenger vessels
Author/Authors: Renata Boć, Krzysztof Marcjan, Marcin Przywarty, Lucjan Gucma
Place of publication: Scientific Journals of the Maritime University of Szczecin
Year: 2016
Keywords: carriage of dangerous goods risk of collision passenger ships chemical tankers optimization of ship routes algorithm
Abstract: This article presents the underlying concepts of a mathematical model optimizing the routes of vessels carrying dangerous goods proceeding in the vicinity of passenger ferries. The method is based on the estimated risk of collision between a chemical tanker and a passenger vessel. Risk assessment was performed using three models. The first model determines the distance of the passing ships on the selected area on the basis of the AIS data. The second one is a stochastic model of navigational safety assessment, which provides statistical data on the probability of collision between the two chosen types of vessels. The third model determines the consequences of collisions between passenger ships and chemical tankers. The study defines the scope of the parameters affecting the objective function of vessel route optimization and their importance in the optimization problem.
Title: Analysis of the traffic of chemical tankers in the Szczecin and Świnoujście seaports
Author/Authors: Renata Boć, Lucjan Gucma
Place of publication: Scientific Journals of the Maritime University of Szczecin
Year: 2016
Keywords: hazardous and noxious substances, chemicals, PHICS, VTS, AIS, pollution
Abstract: The ecological protection of the Baltic Sea against extremely noxious pollution by chemical substances is one of the major issues faced by the states that are located on its shore. In this article, the transport of chemicals in bulk has been analysed. An attempt has been made at grouping dangerous chemical substances based on their negative impact on the environment. Databases that were available have been studied with respect to various chemicals transported in the seaports of Szczecin and Świnoujście. Based on the data available, an attempt at analysing the traffic of tankers carrying noxious chemical substances has been taken up.