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    Wyświetlanie 1-39 z 39
    Tytuł:
    A Clustering Analysis for Identifying Areas of Collision Risk in Restricted Waters
    Autorzy:
    Xiang, Z.
    Hu, Q.
    Shi, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/116062.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    anticollision
    restricted waters
    ship domain
    Opis:
    The identification of areas of collision risk in restricted waters could play an important role in VTS services. Based on the concept of ship domain, this paper introduces a model for identifying collision risk between vessels in restricted waters, then puts forward an improved DBSCAN clustering algorithm for identifying areas of high collision risk, finally, the visualization algorithm is presented. The experimental results in this paper show the algorithm is capable of identifying and rendering areas of collision risk in restricted waters.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 1; 101-105
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multi criteria route selection with custom domain shape
    Autorzy:
    Szłapczyńska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/320871.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Forum Nawigacyjne
    Tematy:
    domena statku
    unikanie kolizji
    ship's domain
    anticollision
    Opis:
    The paper describes a multi criteria vessel route selection system designed to support VTS systems. The system is comprised of three cooperating modules: simulation, collision risk estimation and multi criteria decision making. Given the set of alternative routes, the initial and goal positions and velocities of own and target ships the output of the system is a ranking of all considered routes. This ranking enables the VTS operator to produce a proper route recommendation which is then sent to the navigators. The additional advantage of the system described here is its ability to support custom shape of ship domain.
    Źródło:
    Annual of Navigation; 2006, 11; 123-136
    1640-8632
    Pojawia się w:
    Annual of Navigation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A framework of a ship domain-based near-miss detection method using Mamdani neuro-fuzzy classification
    Autorzy:
    Niksa-Rynkiewicz, T.
    Szłapczyński, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/260244.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    near-miss
    collision risk
    ship domain
    fuzzy classification
    Opis:
    Safety analysis of navigation over a given area may cover application of various risk measures for ship collisions. One of them is percentage of the so called near- miss situations (potential collision situations). In this article a method of automatic detection of such situations based on the data from Automatic Identification System (AIS), is proposed. The method utilizes input parameters such as: collision risk measure based on ship’s domain concept, relative speed between ships as well as their course difference. For classification of ships encounters, there is used a neuro-fuzzy network which estimates a degree of collision hazard on the basis of a set of rules. The worked out method makes it possibile to apply an arbitrary ship’s domain as well as to learn the classifier on the basis of opinions of experts interpreting the data from the AIS.
    Źródło:
    Polish Maritime Research; 2018, S 1; 14-21
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ship Domain in Various Visibility Conditions in Restricted Waters
    Autorzy:
    Pietrzykowski, Z.
    Siemianowicz, M.
    Wielgosz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/320927.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Forum Nawigacyjne
    Tematy:
    navigational safety
    restricted area
    ship domain
    visibility conditions
    Opis:
    Ship domain is one of navigational safety assessment criteria. Its shape and size depend on many factors, including visibility. This article examines the influence of visibility on the shape and dimensions of ship domain in restricted waters. The research was conducted using a simulator of the ECDIS system with the participation of experts’ navigators. The domains of ships in good and restricted visibility have been compared.
    Domena statku jest jednym z nawigacyjnych kryteriów oceny bezpieczeństwa. Jej kształt i rozmiar zależą od wielu czynników, włączając widzialność. W artykule zreferowano badania nad wpływem widzialności na kształt i rozmiary domeny statku na wodach ograniczonych. Badania były prowadzone z użyciem symulatora systemu ECDIS z udziałem nawigatorów ekspertów. Przedstawiono porównanie domen statków w warunkach dobrej i ograniczonej widzialności.
    Źródło:
    Annual of Navigation; 2018, 25; 41-50
    1640-8632
    Pojawia się w:
    Annual of Navigation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The safe ships trajectory in a restricted area
    Autorzy:
    Pietrzykowski, Z.
    Magaj, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/360322.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    safety of navigation
    ship trajectory
    restricted area
    ship domain
    optimization
    Opis:
    This paper presents the problem of determining a safe ship trajectory in a restricted area. The route choice task is defined as a dynamic optimization problem. The route choice algorithm and criteria are presented and discussed. The ship fuzzy domains are used as a safety criterion. The criterion of the number of manoeuvres to be performed by the own ship is added to the algorithm. The ship encounters simulated situations. Calculated safe ship trajectories were presented and discussed. Discusses the implementation of the present process, in real terms.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2014, 39 (111); 122-127
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Unmanned ship simulation with real-time dynamic risk index
    Autorzy:
    Brake, M. C. ter
    Iperen, E. (W. H.) van
    Looije, D.
    Koldenhof, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/135142.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    autonomous ship
    ship domain
    simulation
    dynamic risk
    real-time
    risk
    Opis:
    Currently there is growing interest in unmanned shipping. In the case of unmanned ‘autonomous’ shipping, navigation is automated by on-board decision-making systems. Important motives for unmanned ships include the shortage of skilled mariners, the facilitation of slow steaming strategies, efficiency improvements in confined shipping areas, and increased safety. The aim of the present research is to simulate an unmanned ship through an Automatic Identification System (AIS) based traffic situation. In order to do this, the Maritime Research Institute Netherlands (MARIN) will use the existing simulation technology Dolphin, implement a new tool to read AIS data, simulate a large amount of ships, and develop an auto-captain. The real-time dynamic risk index developed by MARIN will be integrated in Dolphin, to monitor nautical safety of all ships with focus on the unmanned ship. The simulated unmanned ship will navigate according to the International Regulations for Preventing Collisions at Sea (COLREGS). In more complex situations, the auto-captain may use a dedicated decision support tool to find a more efficient solution to pass safely. This approach will be analysed using the real-time dynamic risk index, which will be updated based on latest insights. This paper will discuss the latest development and plans in the unmanned ship simulation project.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 43 (115); 48-54
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The problem of route determination in ship movement in a restricted area
    Autorzy:
    Pietrzykowski, Z.
    Magaj, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/320731.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Forum Nawigacyjne
    Tematy:
    safety of navigation
    ship trajectory
    restricted area
    ship domain
    multi-stage control
    Opis:
    This article focuses on the problem of determining a safe trajectory of a ship proceeding in a restricted area. An algorithm of trajectory choice has been developed, taking into account the parameters of the area, own ship, target ship and other vessels sailing in vicinity. The ship domain has been adopted as a safety criterion. The research results for selected test trials are presented and analyzed. The applicability of the proposed method of trajectory choice in real conditions is considered.
    Źródło:
    Annual of Navigation; 2012, No. 19, part 2; 53-69
    1640-8632
    Pojawia się w:
    Annual of Navigation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of ship domains in traffic separation schemes
    Autorzy:
    Pietrzykowski, Z.
    Magaj, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/135675.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    navigation
    safety
    ship domain
    Traffic Separations Schemes
    natural limitations
    criterion
    Opis:
    The ship domain is a criterion of safety assessment in ship encounter situations. This criterion allows us to identify dangerous situations in open sea and restricted areas, the latter characterized by natural limitations such as the shore line, or artificial ones e.g., boundaries of Traffic Separation Schemes (TSSs). This article analyzes ship domains in TSSs. These schemes, being established in areas where vessel traffic is intensive, as a rule have virtual traffic lanes that indicate the direction of vessel traffic flow. The influence of the ship size and type on domain shape and size in a TSS has been examined. The domains have been defined on the basis of AIS data and statistical methods. The analyzed ship domains have been approximated by ellipses. The authors have determined intervals of changes in domain parameters.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 48 (120); 88-95
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ship domain model for multi-ship collision avoidance decision-making with COLREGs based on artificial potential field
    Autorzy:
    Wang, T.F.
    Yan, X.P.
    Wang, Y.
    Wu, Q.
    Powiązania:
    https://bibliotekanauki.pl/articles/116475.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    ship domain
    ship domain model
    collision avoidance
    colregs
    Artificial Potential Field (AFP)
    decision-making
    Predicted Area of Danger (PAD)
    Closest Point of Approach (CPA)
    Opis:
    A multi-ship collision avoidance decision-making and path planning formulation is studied in a distributed way. This paper proposes a complete set of solutions for multi-ship collision avoidance in intelligent navigation, by using a top-to-bottom organization to structure the system. The system is designed with two layers: the collision avoidance decision-making and the path planning. Under the general requirements of the International Regulations for Preventing Collisions at Sea (COLREGs), the performance of distributed path planning decision-making for anti-collision is analyzed for both give-way and stand-on ships situations, including the emergency actions taken by the stand-on ship in case of the give-way ship’s fault of collision avoidance measures. The Artificial Potential Field method(APF) is used for the path planning in details. The developed APF method combined with the model of ship domain takes the target ships’ speed and course in-to account, so that it can judge the moving characteristics of obstacles more accurately. Simulation results indicate that the system proposed can work effectiveness.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 1; 85-92
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Declarative ship domains in restricted areas
    Autorzy:
    Wielgosz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/135372.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    ship domain
    restricted area
    questionnaire research
    safety
    declarative research
    safety zone
    Opis:
    This paper presents the research results on declarative ship domains in restricted areas. The research was conducted for vessels of different sizes and speed relations. In order to determine the declarative ship domain, data were collected in the form of questionnaires. The influence of ship length and speed on the size and shape of its domain were analyzed. The detailed processes of data development and further approximation are shown. Declarative domains for ships of different sizes and speed relations are compared. As a result of the research, a mathematical model of a declarative ship domain showing the elliptical shape of the domain is presented. The intermediate and summary research results are presented and conclusions drawn.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 46 (118); 217-222
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The ship safety zones in vessel traffic monitoring and management systems
    Autorzy:
    Wielgosz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/135001.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    navigational danger
    safety
    safety frame
    safety zone
    ship domain
    traffic monitoring
    Opis:
    This paper presents the problem of the “know-how” needed by the operators of vessel traffic supervision, monitoring, advisory and safety zone management systems required and maintained by marine navigators on their ships. The problem of the proper and correct interpretation of these systems is raised. Different types of ship safety zones, concerning both anti-collision and navigational purposes are presented, introducing the concept of hydrographic ship domain. Anti-collision and hydrographic domains were compared in order to establish mutual dependence. The factors influencing the two types of ship domains were analysed. The author proposed their merging and replacement with one universal domain, discussing its advantages and disadvantages. The analysis of the factors influencing the shape and size of such ship safety zones in conducted. The results in the different phases of research were presented and conclusions were drawn.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 48 (120); 153-158
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Research on Concept of Ship Safety Domain
    Autorzy:
    Baran, A.
    Fişkin, R.
    Kişi, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/117480.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    safety at sea
    ship safety domain
    ship domain
    Dalian Maritime University (DMU)
    Maritime University of Szczecin
    bibliometric statistics
    safety zone
    safe navigation
    Opis:
    This study presents the results of the content analysis of articles related to "Ship Safety Do-main". The content and statistical analysis of 44 articles that published in 21 different journals between 1970 and 2016 were conducted. This study includes various data types such as publishing years of articles, obtaining the type of data, the contribution of authors, the contribution of countries, the contribution of the institution, the rank of the journal, keywords of articles and etc. The content analysis aims to provide necessary indicators for readers, followers, and contributors of relevant discipline and a glimpse of lots of articles. The published articles about ship safety domain are discovered by this study so as to contribute lecturers and researchers interested in navigation especially ship domain concept. The results of the research were revealed that Poland and China are the most contributing countries, Dalian Maritime University and The Maritime University of Szczecin are the most contributing institutions and Ning Wang and Rafal Szlapczynski are the most contributing researchers.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 1; 43-47
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Navigation decision support for sea-going ships in port approach areas
    Autorzy:
    Pietrzykowski, Z.
    Magaj, J.
    Wielgosz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/135370.pdf
    Data publikacji:
    2018
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    navigation
    decision support
    safety
    approach area
    ship domain
    traffic monitoring
    collision avoidance
    Opis:
    Port approaches are high-traffic areas with limited manoeuvring space. Navigation in such areas requires the analysis of large amounts of information, which can impede decision processes. One solution may be the development of decision support systems dedicated to these areas. This paper presents an attempt to build a navigation decision support system operable in the approach area leading to the port of Świnoujście (Poland), with ship domain implemented as a safety criterion. Assumptions for a decision support system to be used by sea-going vessels in port approach areas are formulated and discussed. Specific features of these areas, such as traffic density, bathymetry, available manoeuvring space and legal limitations are taken into account. The source and scope of information available to the ship have been analysed. The scope of decision support has been defined. A ship domain has been proposed as a safety criterion. Approach areas leading to the port of Świnoujście have been investigated on the basis of real Automatic Identification System (AIS) data. Vessel movement processes in the chosen area were analysed. Ship domains in various parts of the area were determined. The first results concerning criteria for navigational safety assessment are presented. The conducted studies showed significant differences in the size of domains. A case study was performed on a decision support system operable in the approach area leading to Świnoujście.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2018, 54 (126); 75-83
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ship domains in Traffic Separation Schemes
    Autorzy:
    Pietrzykowski, Z.
    Magaj, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/135545.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    navigation
    safety
    ship domain
    Traffic Separations Scheme
    density of traffic
    navigational equipment
    Opis:
    Ship movement processes in selected Traffic Separations Schemes (TSS) of Southern Baltic Sea were analyzed. Ship domains in the analyzed water areas were calculated from Automatic Identification System (AIS) registered data. The purpose of investigation was identification of ship domain parameters taking into account different domain determination criteria. The results were compared and discussed. The conclusions were drawn.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 45 (117); 143-149
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Simulative Comparison of Ship Domains and Their Polygonal Approximations
    Autorzy:
    Szłapczyński, R.
    Szłapczyńska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/116310.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    safety at sea
    Ship Domain
    Collision Avoidance
    COLREGs
    ECDIS
    Simulative Comparison
    Fuzzy Domain
    Simulation Experiment
    Opis:
    The paper investigates the impact of a precise ship domain shape on the size of collision avoidance manoeuvres. The considered collision avoidance manoeuvres include both course and speed alterations. Various ship domains are compared with their polygonal approximations, which vary in the number of points of a domain contour and placement of these points. The best of all considered approximations is determined in the course of simulation experiments performed for head-on, crossing and overtaking situations. The chosen number and placement of contour points combine precision of domain approximation with reasonable computational time.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 1; 135-141
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bezpieczeństwo nawigacji na akwenie ograniczonym - domena rozmyta statków różnej wielkości
    Safety of Navigation in a Restricted Area - the Fuzzy Domain of Various Size Ships
    Autorzy:
    Pietrzykowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/360660.pdf
    Data publikacji:
    2006
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    bezpieczeństwo nawigacji
    domena statku
    akwen ograniczony
    EXPLO-SHIP 2006
    navigational safety
    ship domain
    restricted area
    Opis:
    Parametry statku są istotnym czynnikiem uwzględnianym w ocenie sytuacji nawigacyjnej na akwenie ograniczonym w aspekcie bezpieczeństwa nawigacji. Jednym z kryteriów oceny jest rozmyta domena statku. Podstawą do jej wyznaczenia jest pozyskanie i reprezentacja wiedzy nawigatorów z wykorzystaniem metod i narzędzi sztucznej inteligencji. W artykule przedstawiono wyniki badań i wstępną analizę wpływu wielkości statku na kształt i rozmiar domeny rozmytej.
    Ship's parameters are an essential factor taken into consideration when ship's safety is assessed in a navigational situation in a restricted area. The ship's fuzzy domain is one of the assessment criteria. Its determination is based on the representation of previously acquired navigators' knowledge combined with methods and tools of artificial intelligence. This article presents research results and a preliminary analysis of how a ship's size affects the shape and size of its fuzzy domain.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2006, 11 (83); 223-232
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ship domain in the restricted area – analysis of the influence of ship speed on the shape and size of the domain
    Domena statku na akwenie ograniczonym – analiza wpływu szybkości statku na kształt i rozmiar domeny
    Autorzy:
    Wielgosz, M.
    Pietrzykowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/359684.pdf
    Data publikacji:
    2012
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    domena statku
    akwen ograniczony
    badania symulacyjne
    prędkość statku
    ship domain
    restricted area
    simulation research
    ship's speed
    Opis:
    The ship domain is one of the criteria proposed for the safety of ships in restricted areas. Its shape is influenced by many factors. The paper presents the results of ship domain determination in a restricted area. The influence of ship speed on the shape and size of the domain was examined. The method of determining ship domain based on ship traces and partial domains was characterized. The results have been presented and conclusions formulated.
    Domena statku jest jednym z proponowanych kryteriów bezpieczeństwa statku na akwenie ograniczonym. Na jej kształt ma wpływ wiele czynników. W artykule przedstawiono wyniki badań nad wyznaczaniem domeny statku na obszarze ograniczonym. Rozpatrzono wpływ szybkości statku na kształt i wielkość domeny. Scharakteryzowano metody wyznaczania domeny na podstawie śladów statku i na podstawie domen częściowych. Przedstawiono wyniki i sformułowano wnioski.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 30 (102); 138-142
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The automatic collision avoiding plan research of given way vessel in crossing situation
    Autorzy:
    Hu, W.
    He, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/259329.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ship domain
    hydrodynamic model
    crossing situation
    quantitative element in meeting situation
    automatic collision- avoiding
    Opis:
    This paper aims to the computing model of quantitative elements in crossing situation based on the separating of different states about vessel’s meeting to study the automatic collision-avoiding plan of given way vessel in crossing situation. Following results are proved by simulations: The accuracy of hydrodynamic model is enough for studying and application for automatic collision-avoiding; computing model of quantitative elements by method of bisection is rapidly and reliably convergent during computing. The whole meeting process can be separated to several stages according to the quantitative elements in crossing situation. Different initial collision avoiding measures of given-way vessel in different stages produced as per rules and ordinary practice of seaman.
    Źródło:
    Polish Maritime Research; 2018, S 2; 12-16
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Domena statku w nawigacji morskiej
    Ship domain in marine navigation
    Autorzy:
    Jurdziński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/344162.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydawnictwo Uniwersytetu Morskiego w Gdyni
    Tematy:
    nawigacja morska
    domena statku
    marine navigation
    ship’s domain
    Opis:
    W artykule opisano różnego rodzaju domeny statku. Omówiono domeny o zróżnicowanych kształtach i wymiarach (2D–3D), stosowanych w różnych fazach żeglugi morskiej. Przedstawiono domeny jako narzędzia w nawigacji morskiej do oceny ryzyka w nawigacji. Omówiono również wykorzystanie domen w celu zwiększenia poziomu bezpieczeństwa nawigacyjnego w rejonach nawigacyjnie trudnych do żeglugi w pobliżu niebezpieczeństw nawigacyjnych.
    In this paper different kind of ship domain has been defined and described. Different dimensions and shapes of ship domain (2D–3D) used in all phases of navigation has been discussed. The ship domain as a tool in navigation for assessing the risk in navigation has been given. How to use the ship domain to increase safety of navigation in restricted waters has been discussed.
    Źródło:
    Prace Wydziału Nawigacyjnego Akademii Morskiej w Gdyni; 2017, 32; 9-20
    1730-1114
    Pojawia się w:
    Prace Wydziału Nawigacyjnego Akademii Morskiej w Gdyni
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of near-collisions in the Tagus River Estuary using a marine traffic simulation model
    Autorzy:
    Rong, H.
    Teixeira, A.
    Soares, C. G.
    Powiązania:
    https://bibliotekanauki.pl/articles/135293.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    near-collisions
    ship domain
    marine traffic simulation
    artificial potential field
    AIS data
    maritime safety
    Opis:
    This paper evaluates near ship-ship collision situations in the Tagus River Estuary using a simulation model of ship navigation in restricted waters. The simulation model consists of a ship collision avoidance model based on the Artificial Potential Field (APF) method, which has been improved to account for the lateral distribution of traffic along the route, the ship type and length and speed development of the ships along the trajectory. AIS data of ships entering and leaving the port of Lisbon are analysed to obtain the main characteristics of traffic parameters used as input for the traffic simulation model, such as: the routes of the vessels, speed distribution along the routes, traffic density and characteristics of the ships in each route, among others. First, the improved model of ship navigation and the Monte Carlo simulation technique are used to simulate the marine traffic in the Tagus River Estuary. Then, the concept of “ship domain” is used as collision criterion to determine the number of near collisions and the locations where they are most likely to occur. Finally, the simulation results are compared to the ones obtained from raw AIS data to assess the capability of the simulation model for marine traffic risk analysis.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 43 (115); 68-78
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The area-dynamic approach to the assessment of the risks of ship collision in the restricted water
    Autorzy:
    Guze, S.
    Smolarek, L.
    Weintrit, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/135057.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    risk assessment
    ship’s domain
    risk index
    scale of risk
    ship collisions
    restricted water
    Opis:
    In this paper, two indexes for own ship risk collision assessment in the restricted water are proposed. The first one concerns the collision threats for ships. The second one describes threats that are generated by human error. It is carried out dynamically with accordance to changes in time. To realize the main aim of the paper, the definition of the extended domain of the ship is introduced. Furthermore, the rules to determine the indexes and range of their values are developed. Finally, a comprehensive model and its potential application are presented. There are some important things to take into account during the model development: the interface, the levels and type of the output information, the type and accuracy of the information about the position and movement dynamics of the particular ships. It gives the opportunity to consider the different operation levels. In addition, it also allows us to take into account the different levels of measurement and the collision risk warnings. This approach can be helpful for both the VTS operator and OOW, the ship’s navigator, as the tool to support the safe navigation in restricted water.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 45 (117); 88-93
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Integration of elliptical ship domains and velocity obstacles for ship collision candidate detection
    Autorzy:
    Chen, P. F.
    Van Gelder, P.
    Mou, J. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/116538.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    collision avoidance
    elliptical ship domain
    ship collision candidate detection
    time-discrete velocity obstacle algorithm (TD-NLVO)
    AIS Data
    ship trajectory
    collision candidate detection
    collision candidate
    Opis:
    The maritime shipping industry has been making significant contributions to the development of the regional and global economy. However, maritime accidents and their severe consequences have been posing an incrementing risk to the individuals and societies. It is therefore important to conduct risk analysis on such accidents to support maritime safety management. In this paper, a modified ship collision candidate detection method is proposed as a tool for collision risk analysis in ports and waterways. Time-Discrete Velocity Obstacle algorithm (TD-NLVO) is utilized to detect collision candidates based on the encounter process extracted from AIS data. Ship domain model was further integrated into the algorithm as the criteria for determination. A case study is conducted to illustrate the efficacy of the improved model, and a comparison between the existing method and actual ship trajectories are also performed. The results indicate that with the integration of ship domain, the new method can effectively detect the encounters with significant collision avoidance behaviours. The choice of criteria can have a significant influence on the results of collision candidate detection.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 4; 751-758
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of a critical area for a give-way ship in a collision encounter
    Autorzy:
    Krata, P.
    Montewka, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/223997.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    maritime traffic safety
    collision risk
    anticollision
    ship's motion model
    ship domain
    bezpieczeństwo ruchu morskiego
    ryzyko kolizji
    zapobieganie kolizji
    ruch statku
    model ruchu statku
    Opis:
    Evasive action in ship-ship encounter has to be carried out on time and in line with the international convention on collision regulation – COLREG. The convention not only includes a set of rules defining types of relations between encountering ships but also indicates appropriate action to be taken in a given encounter. One of such encounters is crossing, where, in case of a collision situation, a give-way ship has to take an appropriate action in due time. However, a stand-on vessel is also given an opportunity to manoeuver, if it is made clear to her that the other ship is not fulfilling her obligations. However, it is difficult to specify, at which point in time in the course of an encounter, the stand-on ship has to take an action in order to avoid collision. It is understandable, as this parameter depends on numerous factors, both endogenous (e.g. ship characteristics, her maneuverability), and exogenous (e.g. type of encounter, weather conditions). Therefore in this paper we make an attempt towards the definition of the critical area for a maneuver of a stand-on ship, in the situation where the give-way vessel does not take an action. This is determined with the use of a hydrodynamic model of ship motion, and series of simulations conducted for several types of encountering ships under various conditions. Once determined, the critical area demarcates the no-go area around the own ship, where any other ships on collision courses must not enter. Otherwise a collision cannot be avoided by an action of one ship alone.
    Źródło:
    Archives of Transport; 2015, 34, 2; 51-60
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kształt i rozmiary stref bezpieczeństwa statku
    Shape and Dimension of Ships Safety Zones
    Autorzy:
    Uriasz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/360593.pdf
    Data publikacji:
    2006
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    bezpieczeństwo nawigacji
    strefa bezpieczeństwa statku
    domena statku
    pas ruchu
    strefa zabroniona
    EXPLO-SHIP 2006
    safety of navigation
    ship's safety zone
    ship domain
    traffic lane
    forbidden zone
    Opis:
    Bezpieczne prowadzenie statku wymaga ciągłej identyfikacji i oceny sytuacji nawigacyjnej. Ocena bezpieczeństwa statku własnego sprowadzana jest często do ustalenia i obserwacji stref wokół statku. Pojawienie się obiektów obcych w tych strefach powoduje powstanie zagrożenia bezpieczeństwa nawigacji i wymaga jego oszacowania oraz podjęcia odpowiednich przeciwdziałań. Innym podejściem jest sytuacja, w której zachowanie odpowiedniego poziomu bezpieczeństwa nawigacji wymaga nawigowanie w ramach ustalonej strefy (np. strefa rozgraniczenia ruchu). W artykule przedstawiono różne rodzaje stref bezpieczeństwa statku oraz ich przeznaczenie.
    Ship's safety requires continuous identification and assessment of the navigational situation. The assessment of own ship's safety is often reduced to watching the established zones around the ship. The safety level is decreased when another object disturbs the established zones, which requires evaluating the risk and making adequate countermeasures. The situation when we have to maintain an adequate level of safety leads to another approach, i.e. it requires navigating the ship within an established zone (traffic separation scheme). In the paper different kinds of ship's zones and their purpose are presented.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2006, 11 (83); 343-354
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Domena rozmyta statku w wąskich torach wodnych
    Ship Fuzzy Domain in Narrow Fairways
    Autorzy:
    Pietrzykowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/359924.pdf
    Data publikacji:
    2004
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    bezpieczeństwo nawigacji
    domena rozmyta statku
    akwen ograniczony
    EXPLO-SHIP 2004
    navigational safety
    ship fuzzy domain
    restricted area
    Opis:
    Parametry akwenu w istotny sposób wpływają na bezpieczeństwo nawigacji. Stąd jest niezbędne uwzględnienie ich w ocenie sytuacji nawigacyjnej. Jednym z kryteriów oceny sytuacji nawigacyjnej jest domena statku. W artykule przedstawiono wyniki badań i wstępną analizę wpływu szerokości akwenu ograniczonego na kształt i wielkość domeny rozmytej statku.
    The parameters of a water area significantly affect navigational safety. Consequently, they have to be taken into account while assessing a navigational situation. Ship domain is one of the criteria for the assessment of a navigational situation. This article presents the research results and an initial analysis of the relationship between the width of a restricted area and the shape and size of a ship fuzzy domain.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2004, 2 (74); 293-304
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Game Strategies of Ship in the Collision Situations
    Autorzy:
    Lisowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/117558.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    game theory
    Game Ship Control (GSC)
    Collision Situation
    MATLAB
    Safe Ship Trajectory
    Simulation Research
    Neural Ship’s Domain
    Algorithm
    Opis:
    The paper introduced the basic model of process of safe ship control in a collision situation using a game model with j objects, which includes non-linear state equations and non-linear, time varying constraints of the state variables as well as the quality game control index in the forms of the game integral payment and the final payment. Approximated model of the process control as the model of multi-step matrix game in the form of dual linear programming problem has been adopted here. The Game Ship Control GSC computer program has been designed in the Matlab/Simulink software in order to determine the own ship’s safe trajectory. These considerations have been illustrated with examples of a computer simulation using an GSC program for determining the safe ship's trajectory in real navigational situation. Simulation research were passed for five sets of strategies of the own ship and met ships.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 1; 69-77
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ship domain as a safety criterion in a precautionary area of traffic separation scheme
    Autorzy:
    Pietrzykowski, Z.
    Magaj, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/116705.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    ship domain
    Closest Point of Approach (CPA)
    Traffic Separation Schemes (TSS)
    navigational safety assessment
    precautionary area
    safety criterion
    safety at sea
    colregs
    Opis:
    The ship domain is one of the criteria for navigational safety assessment. It is particularly important in restricted areas with high intensity traffic, where the criteria of closest point of approach (CPA) and time to CPA are difficult to apply. This research continues to examine ship domains in Traffic Separation Schemes (TSS). We have analyzed precautionary areas established within TSSs in connection with changed arrangements of vessel traffic. Besides, we have defined ship domains in a precautionary area of a specific TSS, and compared them to domains of vessels proceeding along traffic lanes.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 1; 93-98
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ship domain in open sea areas and restricted waters: an analysis of influence of the available maneuvering area
    Autorzy:
    Wielgosz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/117213.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    ship domain
    open sea areas
    restricted waters
    available maneuvering area
    Electronic Chart Display and Information System (ECDIS)
    navigational safety assessment
    safety at sea
    simulation method
    Opis:
    A ship domain is nowadays an important navigational safety assessment criterion. Its shape and size depend on many factors. The available maneuvering area seems to be one of the most important of them. This article examines the influence of the available manoeuvring area on the shape and size of ship domain in the open sea and restricted waters. The research was conducted using a simulation method. Expert navigators participated in simulations using the ECDIS system. The domains of ship passages in open sea area and restricted area have been compared.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 1; 99-104
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determining the best possible speed of the ship in shallow waters estimated based on the adopted model for calculation of the ship’s domain depth
    Autorzy:
    Rutkowski, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/1573899.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    safe speed
    best possible speed
    optimal speed
    ship’s domain
    safety depth
    under keel clearance (UKC)
    navigational risk factor
    ship squat
    Opis:
    The purpose and scope of this article is to present the best marine practices used to determine the ship’s domain depth (compared to the safety depth parameter in ECDIS) and the safest and best possible speed (also known as optimal speed) of the ship in restricted sea areas limited by the depth of navigation waters. The author also presents a method that can be used to estimate the safe speed of a ship in shallow waters and the so-called navigational risk factor (specified in the range from 0 to 1), using the safety depth parameter specified in ECDIS based on the analysis of a three-dimensional model of the ship’s domain. The essence of the method proposed in this paper is a systematic approach to the operation of a seagoing ship in the aspect of assessing its navigation safety (navigational risk factor) when manoeuvring in restricted sea areas, in particular in shallow waters including navigable canals and fairways.
    Źródło:
    Polish Maritime Research; 2020, 3; 140-148
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Interdependencies between evaluation of collision risks and performance of shipborne PNT data provision
    Zależności pomiędzy oceną ryzyka zderzeń statków a jakością danych dostarczanych przez pokładowe systemy PNT
    Autorzy:
    Banyś, P.
    Engler, E.
    Heymann, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/374043.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    PNT data
    requirements on shipborne
    accuracy
    integrity
    simulation
    AIS
    risk on incidents and accidents
    ship domain
    ship arena
    dane PNT
    wymagania na okręcie
    dokładność
    integracja
    symulacja
    ryzyko w zdarzeniach i wypadkach
    domena statku
    obszar statku
    Opis:
    The highest priority for safe ship navigation is the avoidance of collisions and groundings. For this purpose, the concept of ship domain has been introduced to describe the surrounding effective, waters which should be kept clear of other ships and obstacles. In the last decades, a large variety of ship domains have been developed differing in the applied method of their determination as well as in the modelled shape, size, and safety areas. However, a ship domain should be adjusted in real time to enable a reliable evaluation of collision risks by the officers of the watch. Until today in discussions about modelling and utilization of ship domains, it has been mostly unnoticed that the performance of vessel’s position (P), navigation (N), and timing data (T) ultimately determines the accuracy and integrity of indicated ship domain. This paper addresses this question, and starts with a comprehensive analysis of AIS data to prove the violation of ship domains in the maritime practice. A simulation system has been developed to enable, for the first time, investigation into the extent inaccuracies in PNT data result to a faulty evaluation of collision risks. The simulation results have shown that there is a non-negligible risk of not detecting a collision, if inaccuracies of sensor data remain unnoticed.
    Zapobieganiu wypadkom na morzu przyznaje się najwyższy priorytet w ramach bezpiecznego prowadzenia statku. Dla poprawy bezpieczeństwa żeglugi stworzono koncepcję domeny statku. Definiuje ona taki obszar wokół jednostki pływającej, w którym nie powinno być ani żadnych innych uczestników ruchu morskiego, ani przeszkód. Na przestrzeni minionych dziesięcioleci powstały rozmaite domeny statku różniące się między sobą sposobem ich definiowania, modelowaniem kształtu, rozmiarem czy strefami bezpieczeństwa. Istotnym warunkiem do należytej oceny ryzyka kolizji jest umożliwienie oficerowi wachtowemu dopasowania w czasie rzeczywistym domeny statku do panujących warunków. W dotychczasowych dyskusjach na temat modelowania i stosowania domeny statku przeważnie pomijano istotną zależność pomiędzy dokładnością pozycji statku (P), wektora ruchu (N) oraz znacznika czasu (T) a dokładnością i spójnością domeny statku. W niniejszym artykule poruszono kwestię powyższego związku. Na wstępie przeprowadzono dogłębną analizę danych AIS i dowiedziono się, że naruszanie domeny statku ma miejsce w praktyce żeglugowej. Ponadto opracowano system symulacyjny, który po raz pierwszy umożliwia badanie wpływu niedokładności danych PNT na błędność oceny ryzyka kolizji. Wyniki symulacji potwierdziły, że istnieje poważna możliwość niewykrycia groźnej sytuacji zbliżeniowej, jeżeli pozostanie niedostateczna dokładność czujników pokładowych niezauważona.
    Źródło:
    Transport Problems; 2016, 11, 4; 151-165
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of ship neural domain shape on safe and optimal trajectory
    Autorzy:
    Lisowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201475.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    artificial neural network model
    method for optimization
    dynamic programming method
    ship safety domain
    safe ship control
    path planning
    multi-object decision model
    computer simulation
    Opis:
    This article presents the task of safely guiding a ship, taking into account the movement of many other marine units. An optimally neural modified algorithm for determining a safe trajectory is presented. The possible shapes of the domains assigned to other ships as traffic restrictions for the particular ship were subjected to a detailed analysis. The codes for the computer program Neuro-Constraints for generating these domains are presented. The results of the simulation tests of the algorithm for a navigational situation are presented. The safe trajectories of the ship were compared at different distances, changing the sailing conditions and ship sizes.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 185--191
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Safety of Shipping when Navigating on the PS Class Container Vessel “Emma Maersk” While Approaching DCT Terminal in Gdańsk Port Północny
    Autorzy:
    Rutkowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/116571.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    port operations
    port of Gdansk
    container vessel
    Deepwater Container Terminal (DCT) in Gdansk
    navigational risk
    safety at sea
    safety of shipping
    ship’s domain
    Opis:
    In this paper author presents the methods that can be used for estimating the safety of shipping (navigational risk) in the restricted sea areas of the Gulf of Gdansk by means of a three-dimensional model of ship’s domain specified for the PS Class container vessels “Emma Maersk”. The essence of the method suggested in the thesis is the systematic approach to a sea vessel operation in the aspect of estimating its safety while approaching DCT terminal in Gdańsk Port Północny in the divergent exterior conditions.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 481-488
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The CFD method-based research on damaged ship’s flooding process in time-domain
    Autorzy:
    Hu, Li-Fen
    Qi, Huibo
    Li, Yuemeng
    Li, Wubin
    Chen, Shude
    Powiązania:
    https://bibliotekanauki.pl/articles/259812.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    flooding process
    Bernoulli equation
    time domain calculation
    damaged ship
    Opis:
    The flooding process is one of the main concerns of damaged ship stability. This paper combines the volume of fluid (VOF) method incorporated in the Navier-Stokes (NS) solver with dynamic mesh techniques to simulate the flooding of a damaged ship. The VOF method is used to capture the fluid interface, while the dynamic mesh techniques are applied to update the mesh as a result of transient ship motions. The time-domain flooding processes of a damaged barge and a rectangular cabin model are carried out based on the abovementioned method, and the computational results appear compatible with the experimental data. During the flooding process, the motion of the flooding flow at different stages is observed and compared with that observed in real conditions. The time-domain research of the flooding process is the starting point for subsequent establishment of damaged ship’s roll movement and capsizing the mechanism of dead ship condition in wave.
    Źródło:
    Polish Maritime Research; 2019, 1; 72-81
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Efektywna domena statku na akwenie ograniczonym i jej zastosowanie w systemach statkowych
    Effective ship domain in restricted area and its use in ship systems
    Autorzy:
    Wielgosz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/253937.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Naukowo-Wydawniczy TTS
    Tematy:
    domena efektywna
    statek
    akwen ograniczony
    ECDIS
    effective domain
    ship
    restricted area
    Opis:
    W artykule przedstawiono wyniki badań nad domeną efektywną statku na akwenie ograniczonym. Badania prowadzono dla statków określonych wielkości. Dane zbierano z rejestrowanych zapisów symulacji prowadzonych w laboratorium systemów ECDIS. Analizowano kształt i wielkość domeny statków określonej wielkości i prędkości. Dokonano porównania domen bezwzględnych i względnych w celu ustalenia wzajemnych zależności oraz wpływu wielkości i prędkości jednostek na kształt i wielkość domeny. Przedstawiono wyniki w poszczególnych fazach badań, wybrane wyniki końcowe oraz sformułowano wnioski.
    This paper presents the research results on effective ship domain in restricted area. The research was conducted for the vessels of different sizes and speed relations. The data has been collected from the records of predefined scenarios performed in ECDIS simulator. The influence of ship length and speed on size and shape of its domain were analyzed. Absolute and relative domains were compared. The intermediate and summary results were presented and conclusions were drawn.
    Źródło:
    TTS Technika Transportu Szynowego; 2015, 12; 1635-1642, CD
    1232-3829
    2543-5728
    Pojawia się w:
    TTS Technika Transportu Szynowego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prognozowany zasięg pola sztormowego cyklonu tropikalnego jako domena rozmyta cyklonu
    Forecasted Storm Field Range of Tropical Cyclone as a Cyclone Fuzzy Domain
    Autorzy:
    Wiśniewski, B.
    Medyna, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/359767.pdf
    Data publikacji:
    2004
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    cyklon tropikalny
    prognoza
    domena rozmyta
    EXPLO-SHIP 2004
    tropical cyclone
    forecast
    fuzzy domain
    Opis:
    Podjęto próbę opisania zasięgu strefy sztormowej cyklonu z wiatrami przekraczają-cymi 34 w jako domenę rozmytą cyklonu na przykładzie prognoz +36 h dla Północnego Atlantyku.
    The paper describes a tropical cyclone storm field range (winds exceeding 34 knots) as a tropical cyclone fuzzy domain, giving an example of 36H prognosis for the North Atlantic.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2004, 2 (74); 419-430
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intelligent autonomous ship navigation using multi-sensor modalities
    Autorzy:
    Wright, R.G.
    Powiązania:
    https://bibliotekanauki.pl/articles/117337.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    maritime autonomous surface ships (MASS)
    artificial intelligence (AI)
    intelligent autonomous ship navigation
    autonomous ship
    autonomous ships navigation
    multiSensor modalities
    unmanned ship
    maritime domain awareness (MDA)
    Opis:
    This paper explores the use of machine learning and deep learning artificial intelligence (AI) techniques as a means to integrate multiple sensor modalities into a cohesive approach to navigation for autonomous ships. Considered is the case of a fully autonomous ship capable of making decisions and determining actions by itself without active supervision on the part of onboard crew or remote human operators. These techniques, when combined with advanced sensor capabilities, have been touted as a means to overcome existing technical and human limitations as unmanned and autonomous ships become operational presently and in upcoming years. Promises of the extraordinary capabilities of these technologies that may even exceed those of crewmembers for decision making under comparable conditions must be tempered with realistic expectations as to their ultimate technical potential, their use in the maritime domain, vulnerabilities that may preclude their safe operation; and methods for development, integration and test. The results of research performed by the author in specific applications of machine learning and AI to shipping are presented citing key factors that must be achieved for certification of these technologies as being suitable for their intended purpose. Recommendations are made for strategies to surmount present limitations in the development, evaluation and deployment of intelligent maritime systems that may accommodate future technological advances. Lessons learned that may be applied to improve safety of navigation for conventional shipping are also provided.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 503-510
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wykorzystanie przestrzennego modelu domeny do oceny bezpieczeństwa nawigacyjnego kontenerowców oceanicznych klasy PS, takich jak „Emma Maersk”, podczas manewrów podchodzenia do terminalu DTC Gdańsk Port Północny
    Estimating safety of shipping in the restricted sea areas by means of the three-dimensional model of ships domain specified for PS class container vessels type "Emma Maersk" while approaching dct terminal in Gdańsk Port Północny
    Autorzy:
    Rutkowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/222047.pdf
    Data publikacji:
    2012
    Wydawca:
    Akademia Marynarki Wojennej. Wydział Dowodzenia i Operacji Morskich
    Tematy:
    bezpieczeństwo żeglugi
    bezpieczeństwo nawigacyjne
    manewrowanie statkiem
    rezerwa nawigacyjna głębokości
    zapas wody pod stępką
    domena statku
    ryzyko nawigacyjne
    ryzyko kolizji
    przeszkoda nawigacyjna
    kontenerowiec
    terminal
    DCT Gdańsk
    safety of shipping
    safety of navigation
    ship handling
    under keel clearance (UKC) ship’s domain
    risk of navigation
    risk of collisions
    navigational obstacle
    container vessel
    Opis:
    W artykule zaproponowano sposób oceny bezpieczeństwa żeglugi (ryzyka nawigacyjnego) kontenerowców klasy PS, takich jak „Emma Maersk”, w akwenie ograniczonym Zatoki Gdańskiej z wykorzystaniem przestrzennego modelu domeny statku. Istotą proponowanych w pracy metod jest systemowe ujęcie eksploatacji statku morskiego w aspekcie oceny jego bezpieczeństwa podczas manewrów podchodzenia do terminalu kontenerowego DTC Gdańsk Port przy działaniu różnych zakłóceń zewnętrznych.
    In this paper author presents the methods that can be used for estimating the safety of shipping (navigational risk) in the restricted sea areas of the Gulf of Gdańsk by means of a three- -dimensional model of ship’s domain specified for the PS Class container vessels ‘Emma Maersk’. The essence of the method suggested in the thesis is the systematic approach to a sea vessel operation in the aspect of estimating its safety while approaching DCT terminal in Gdańsk Port Północny in divergent exterior conditions.
    Źródło:
    Zeszyty Naukowe Akademii Marynarki Wojennej; 2012, R. 53 nr 2 (189), 2 (189); 123-140
    0860-889X
    Pojawia się w:
    Zeszyty Naukowe Akademii Marynarki Wojennej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modeling of Ship Collision Risk Index Based on Complex Plane and Its Realization
    Autorzy:
    Xu, X.
    Geng, X.
    Wen, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/116223.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    risk
    risk calculation
    ship collision risk index
    risk index
    ships domain
    Decision Support System (DSS)
    modeling of ship collision risk index
    ARPA
    Opis:
    Ship collision risk index is the basic and important concept in the domain of ship collision avoidance. In this paper, the advantages and deficiencies of the various calculation methods of ship collision risk index are pointed out. Then the ship collision risk model based on complex plane, which can well make up for the deficiencies of the widely-used evaluation model proposed by Kearon.J and Liu ruru is proposed. On this basis, the calculation method of collision risk index under the encountering situation of multi-ships is constructed, then the three-dimensional image and spatial curve of the risk index are figured out. Finally, single chip microcomputer is used to realize the model. And attaching this single chip microcomputer to ARPA is helpful to the decision-making of the marine navigators.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 2; 251-256
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Monitoring system of extreme loadings of propulsion system’s foundation : design assumptions
    Autorzy:
    Kyzioł, L.
    Murawski, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/242588.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    marine structural health monitoring
    propulsion system diagnostic
    marine engines’ foundations
    underwater explosion
    ship grounding
    optical time-domain reflectometer
    Fibre Bragg Grating
    Opis:
    Project of on-line diagnostic (monitoring) system of marine propulsion system working parameters is the authors' general target. Proper propulsion system’s foundation is one of the most important parameters for its reliable operation. Different types of quasi-static loadings and dynamic excitations can be observed during ships exploitation. Presented research has been limited to extreme loadings. Underwater explosions or ship groundings are considered examples of extreme foundation loadings. Analysis of the physical parameters of the extreme forces has been presented in the first part of the paper. Water pressure spatial and non-spatial (time) distribution during underwater explosion has been analysed as an example. Short overview of the dynamic mathematical models of underwater explosions is presented. Time function of vibrations acceleration of ship construction is important design assumption of planned Structural Health Monitoring (SHM) system. Propulsion system's foundation loading measurements should take into account general ship hull deformation (in the aft part of the ship) as well as reactions changes of main engine and shaft line bearings. Ship hull deformation should be monitored as quasi-continuous measurements, along whole propulsion system. Optical Time-Domain Reflectometer method (OTDR) is planned for hull deformation monitoring. Propulsion system bearings' reactions are a source of local foundation pads' strain changes. Fibre Bragg Grating (FBG) sensors are the best for that kind of measurements, in authors opinion. Both techniques (OTDR and FBG) have been shortly described in the paper. Scheme of monitoring system of marine propulsion systems foundation's loadings are proposed in the end of the article.
    Źródło:
    Journal of KONES; 2013, 20, 1; 155-162
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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