Department of Marine Traffic Engineering Marcin Przywarty
Title: Dimensioning of Fairway Bends—Kinematic Method of Numerical Simulation
Author/Authors: Stanisław Gucma, Marcin Przywarty, Jan Dzwonkowski, Mateusz Bilewski
Place of publication: Journal of Marine Science and Engineering
Year: 2020
Keywords: manoeuvring safety; safe manoeuvring area; dimensioning of fairway bends
Abstract: The article presents a new kinematic method of numerical simulation intended for establishingdimensions of safe manoeuvring areas of bends in various types of fairways for vessels of specificparameters. The method consists of multiple numerical simulations of a ship’s passage (ship’s centre ofgravity) through a bend, representing the entire physically possible movement of the ship, and an analysisof simulation results. The developed method was verified
on the bends of the ́Swinouj ́scie–Szczecinfairway, by comparing the results to the exact simulation method of a ship’s movements. The relativelyhigh accuracy and low costs of the method allow it to be used in a concept design of built or modernwaterway systems.
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DOI: 10.3390/jmse8020138
Title: Kinematic Method of Determining Safe Fairway Bend Widths
Author/Authors: Stanisław Gucma, Marcin Przywarty, Jan Dzwonkowski
Place of publication: TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation
Year: 2020
Keywords: maritime traffic engineering, safe fairway, fairway, Full Mission Bridge Simulator (FMBS), PIANC, kinematic model of ship movement, rate of turn (ROT)
Abstract: This article presents a dedicated kinematic method of determining a safe fairway bend width with a specific turn angle and arc radius as the function of ship parameters and prevailing navigational conditions on the fairway. The assumed approach takes into consideration monoeuvring and navigational components of the safe fairway bend width. The method is based on an analysis of the results of numerical tests conducted on a model representing all physically possible movements of ship’s centre of gravity in the bend. The developed method was initially verified on the Ińskie bend, part of the Świnoujście-Szczecin fairway.
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DOI: 10.12716/1001.14.02.22
Title: Conditions for the location of a universal LNG tanker berth designed for the port of Świnoujście
Author/Authors: Stanisław Gucma, Maciej Gucma, Rafał Gralak, Marcin Przywarty, Bartosz Muczyński
Place of publication: Scientific Journals of the Maritime University of Szczecin
Year: 2019
Keywords: universal LNG discharge berth, waterway optimization simulation method
Abstract: This article describes the methodology to design a universal berth for LNG discharge from tankers with a wide cargo capacity range of 500 m3 to 220,000 m3. Based on a waterway optimization simulation, the methodology has been used to determine parameters of the designed universal cargo handling berth located in the port of Świnoujście.
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DOI: 10.17402/326
Title: Risk of grounding by a ship passing a fairway - Simulation method of navigational risk estimation in emergency situations
Author/Authors: Stanisław Gucma, Marcin Przywarty, Wojciech Ślączka, Rafał Gralak
Place of publication: European Navigation Conference, ENC 2019/ IEEE
Year: 2019
Keywords: risk estimation, safety of navigation, marine simulation, marine traffic engineering
Abstract: The article presents a simulation method for estimating the risk of grounding of a ship passing along the fairway in emergency situations This method consists in the determination of accident probability and utilizes a specially designed simulation experiment involving rudder jamming or engine blackout during ship passage along a dredged fairway. The method was used for risk assessment referring to grounding by an LNG tanker in the approach channel to the port of Swinoujście.
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DOI: 10.1109/EURONAV.2019.8714146
Monography: Slow steaming of container carriers. A study.
Author/Authors: Tadeusz Borkowski, Przemysław Kowalak, Bogusz Wiśnicki, Marcin Przywarty
Place of publication: Maritime University of Szczecin Press
Year: 2019
Keywords: slow steaming, Energy Efficiency Design Index, operation of container carriers
Abstract: The book introduces the reader to the issue of maritime transport and its impact on the environment. While waterways are now an efficient and cost-effective supply system driving economic development, they also have negative effects on nature, causing climate change and the destruction of natural habitats at a global level. The authors focus on the concept of slow steaming, which assumes that the ship moves at a speed lower than the maximum speed, which is dictated by economic considerations, as the ship uses less fuel when operating the engine under a lower load. Ship speed reduction is considerated as the easiest way to reduce operating costs. The paper discusses not only the regulations and procedures for the prevention of ecosystem pollution, but also presents experimental data measured on ships during sea operations - exhaust emissions or energy indicators, and analyzes and comparisons of measurement results.
ISBN: 9788364434242
Title: Simulation methods for determining the conditions of safe ship operations on port waterways
Author/Authors: Stanisław Gucma, Maciej Gucma, Marcin Przywarty
Place of publication: Inżynieria Morska i Geotechnika
Year: 2019
Keywords: port technology, ship operation, sea waterways, port waterways, safe ship operation, safe maneuvering areas
Abstract: Simulation methods for determining the conditions of safe ships operations on existing port waterways. Examples of application of these methods concerning detailed solutions such as: increasing the maximum parameters of ships on a given waterway, changing permissible hydrometeorological conditions (eg increasing the permissible wind speed or current), determining the minimum towing assistance for ships operated on an existing waterway
details
ISSN: 0867-4299
Title: A kinematic method for the assessment of the safe parameters of a waterway bend
Author/Authors: Jan Dzwonkowski, Marcin Przywarty, Mateusz Bilewski
Place of publication: Scientific Journals of the Maritime University of Szczecin
Year: 2018
Keywords: kinematic method, safe parameters, waterway, simulation model, physically paths, simulation
Abstract: This paper presents an original kinematic method for the assessment of the safe parameters of waterway bends. The proposed method has been based on the analysis of the results obtained through the use of the developed simulation model which allowed for the examination of all the physically available paths of a ship’s centre of gravity. The results of the simulation were divided into defined subsets that enabled the assessment of the safe parameters of waterway bends. This paper also presents the calculations that were carried out for the theoretical reference bend.
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DOI: 10.17402/272
Title: A method for the approximation of oil binder fall trajectory
Author/Authors: Marcin Przywarty, Bartosz Muczyński, Mateusz Bilewski
Place of publication: Scientific Journals of the Maritime University of Szczecin
Year: 2018
Keywords: oil binders, oil spill handling, BioBind, natural experiment, sea operation, approximation
Abstract: The following paper presents a novel method for approximating the fall trajectories of small, lightweight oil binders, used during oil spill clean-up operation at sea. Due to the weight, size and shape of the binders, the fall trajectory is highly dependent on the direction and strength of the wind, as well as the rotations and positions of individual binders when dropped. Since a large quantity of tightly packed binders are dropped at once, it is highly inconvenient to calculate the precise trajectory of each binder when its exact initial rotation and position inside the container are not known. The aim of this study is to predict the exact moment and position of the drop, as well as the oil binders’ spread, considering wind conditions, airplane velocity and height.
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DOI: 10.17402/264
Title: Optimization of the parameters of the Swinoujscie outer container port
Author/Authors: Stanisław Gucma, Rafał Gralak, Marcin Przywarty, Bartosz Muczyński
Place of publication: Scientific Journals of the Maritime University of Szczecin
Year: 2018
Keywords: optimization, ships traffic, Simulation method, seaport parameters, container port, safety of manoeuvring
Abstract: The article presents an original two-stage simulation method for the optimization of seaport parameters.
Presentation of the method is based on example of parameter optimization of the outer container port in Świnoujście. Presented method uses two limitations of the objective function related to safety of manoeuvring and mooring of ships. It consist of two stages, first one is carried out for the parameters defined in the preliminary stage of design. On the basis of results from this stage, layout and other parameters of port waterways can be adjusted to satisfy assumed safety criteria. The second stage uses the parameters established in the first stage. It allows for small adjustments which will not change the safety of manoeuvring. The result of second stage is optimal parameters of the examined port waterways.
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DOI: 10.17402/274
Title: Universal Simulation Method for Determination the Maneuverability of Ferry on the Example of Ystad Port
Author/Authors: Lucjan Gucma, Rafał Gralak, Bartosz Muczyński, Marcin Przywarty
Place of publication: Annual of Navigation
Year: 2018
Keywords: maneuverability, maneuvering safety,traffic engineering, ferry, simulation.
Abstract: The paper describes a universal simulation method used by the authors to determine the con-ditions of safe operation of sea ferries, in terms of marine traffic engineering. The assumptions, simulation experiment and results are described on the example of the m/f Mazovia manoeuvring in the Port of Ystad. Carried out and described in the article simulation study using the present method was aimed to determine the possibility of adapting the propulsion and steering systems of the ferry including: -determination of the wind limits in the Port of Ystad in terms of Mazovia ferry operation; -assessment of the maneuvering safety in a port area and determination of conditions of safe operation with present propulsion and steering systems; -determination of the possibility of adapting the propulsion and steering systems to meet the requirements of the shipowner for the economically efficient and safe operation of the ferry.
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Title: Analysis of vessel traffic flows on a waterway bend
Author/Authors: Marcin Przywarty, Jan Dzwonkowski
Place of publication: Scientific Journals of the Maritime University of Szczecin
Year: 2017
Keywords: vessel traffic flows, traffic intensity, fairway width, fairway bend
Abstract: This paper presents preliminary results of research to develop a method of analysis of chosen parameters of vessel traffic flows on a bend in a waterway. Assumptions within the model are based on the geometrical dependences and, for a significant part, on expert experience and real life manoeuvring tactics. The work is focused on the analysis of coordinates of a ship, reduced to its centre of gravity, for different input and assumed output parameters. The proposed method allows also for the analysis of other parameters that influence navigational safety such as rate of turn. The results confirm the possibility of assessment of traffic flow parameters with use of the developed method. In the next stages of the work, algorithms which are capable of accounting for human factors and external conditions can be implemented.
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DOI: 10.17402/218
Title: Factors influencing grounding probability in the Baltic Sea area - quantitative assessment
Author/Authors: Marcin Przywarty
Place of publication: Scientific Journals of the Maritime University of Szczecin
Year: 2016
Keywords: vessels grounding causes, grounding probability coefficient, navigational safety, quantitative assessment,
research area, internal factors
Abstract: This paper presents the process of quantitative assessment of selected factors influencing the probability of grounding. All grounding accidents that occurred during one year (2013) in the Baltic Sea area were analysed. The research area was chosen because of very high traffic intensity and a large number of narrow passages that make it difficult for navigation. The research period was limited by the latest data reported by HELCOM up to the year 2013. The Method of Grounding Probability Coefficient (GPC) calculation is proposed to reach the assumed goal. Either internal factors such as the ships size and ship type or external factors such as time of day, wind force and season were taken into account. As a result the values of coefficients describing the impact of various factors on the probability are evaluated. This coefficients, taking into consideration coupling effect, can be used in future in the navigational safety simulation models based on the assumed value of accident probability.
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DOI: 10.17402/106
Title: Using maritime simulation systems to present complex information in maritime museums
Author/Authors: Lucjan Gucma, Marcin Przywarty, Tomasz Budzan, Lech Karwowski, Peter Vidmar, Uros Hribar
Place of publication: Scientific Journals of the Maritime University of Szczecin
Year: 2016
Keywords: maritime simulation, solar compass, Viking navigation, Decca system, sciences centre, navigational systems
Abstract: The paper presents the stages of creation of an autonomous historical navigational system simulator working both in real and accelerated time. The simulator allows performance of navigation tasks from the time of the ancient Vikings, as well as to fix a position by using the Decca system on a real Mk21 receiver recreated to cooperate with the artificial Decca system model. The Viking solar compass discovered on Wolin Island in 2013 was the trigger for creating
such a simulator as part of a broader exhibition of navigational systems and tools. The main intention of the exhibition is to demonstrate the hyperbolic navigation application that links both systems.
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DOI: 10.17402/088
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 isbased 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.
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DOI: 10.17402/177