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Wyszukujesz frazę "Safety at Sea" wg kryterium: Temat


Wyświetlanie 1-7 z 7
Tytuł:
Optimal and game control algorithms of a ship in collision situations at sea
Autorzy:
Lisowski, J
Powiązania:
https://bibliotekanauki.pl/articles/205923.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
marine navigation
safety at sea
safe ship control
optimal control
game theory
Opis:
This paper presents an application of selected methods of optimal and game control theory to determine own ship safe trajectory when passing other ships encountered in good and in restricted visibility at sea. Five algorithms for determining safe trajectory of the own ship in a collision risk situation: non-cooperative positional game, non-cooperative matrix game, cooperative positional game, dynamic optimization, and kinematic optimization are compared. The analysis is illustrated with examples of computer simulations of the algorithms to determine safe and optimal own ship trajectories in the real navigational situations at sea.
Źródło:
Control and Cybernetics; 2013, 42, 4; 773-792
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability of navigational charts and confidence in the bathymetric data presented
Autorzy:
Weintrit, A.
Powiązania:
https://bibliotekanauki.pl/articles/135050.pdf
Data publikacji:
2018
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
marine navigation
safety at sea
navigational charts
accuracy
reliability
zone of confidence
source diagrams
International Hydrographic Organization (IHO)
Opis:
Navigational charts are a basic source of information for seafarers. But how accurate and reliable are they? How much trust and confidence can be put in them? Unfortunately, the answer is not so simple; it is far more complicated than merely saying that one chart is accurate and reliable while another is not. However, any seafarer navigating in unfamiliar waters should have the necessary skills. It is a great challenge – some may say an impossibility – to keep the thousands of navigational charts up to date. But exactly how out of date, how inaccurate, are the chart data? Chart users will have a better idea now that the Hydrographic Office is gradually implementing a new chart feature called the Zone of Confidence (ZOC) box which replaces the Source Diagram that is currently in use on large-scale charts. Source Diagrams, and now the improved ZOCs, assist seafarers in assessing hydrographic survey data and the associated levels of risk of navigating in a particular area. According to the new edition of the International Hydrographic Organization (IHO) specifications, S-4 navigational charts will provide more information on ZOCs. The current paper discusses these new regulations.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2018, 54 (126); 84-92
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Game control methods in avoidance of ships collisions
Autorzy:
Lisowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/259146.pdf
Data publikacji:
2012
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
marine navigation
safety at sea
safe ship control
optimal control
differential games
positional games
matrix games
computer simulation
Opis:
The paper introduces application of selected methods of a game theory for automation of the processes of moving marine objects, the game control processes in marine navigation and the base mathematical model of game ship control. State equations, control and state constraints have been defined first and then control goal function in the form of payments – the integral payment and the final one. Multi-stage positional and multi-step matrix, non-cooperative and cooperative, game and optimal control algorithms in a collision situation has been presented. The considerations have been illustrated as an examples of a computer simulations mspg.12 and msmg.12 algorithms to determine a safe own ship’s trajectory in the process of passing ships encountered in Kattegat Strait.
Źródło:
Polish Maritime Research; 2012, S 1; 3-10
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accuracy of bathymetric data in electronic navigational charts
Autorzy:
Weintrit, A.
Powiązania:
https://bibliotekanauki.pl/articles/134971.pdf
Data publikacji:
2018
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
marine navigation
safety at sea
international hydrographic organization
ECDIS
electronic navigational charts
accuracy
category of zone of confidence (CATZOC)
Opis:
Navigational charts are essential tools for marine navigation. But how accurate are the navigational charts that we use when going sailing? Do we really know how much faith can be placed in them? All charts, whether paper or electronic, contain data, which varies in quality due to the age and accuracy of individual surveys. In general, remote areas away from shipping routes tend to be less well surveyed, and less frequently, while areas of high commercial traffic are re-surveyed frequently to very high levels of accuracy, particularly where under-keel clearances are small. It is quite accurate to consider a chart as a jigsaw of individual surveys pieced together to form a single image. Having the necessary skills to determine how much confidence should be placed in the surveys, which combine to form a chart, should be a requirement for any sailor venturing into unfamiliar waters. When the International Hydrographic Organization (IHO) developed the S-57 standard for Electronic Navigational Charts (ENCs), this problem was recognized and it was decided that the quality of survey data used to compile ENCs had to be encoded within a composite data quality indicator ‘Category of Zone of Confidence’ (CATZOC) to assist seafarers in assessing hydrographic survey data and the associated level of risk of navigating in a particular area. According to IHO S-67, the accuracy of Electronic Navigational Charts is not impressive and leaves much to be desired. The author discusses these apparent shortcomings of ENCs and present erroneous approaches to this problem, so common in the seafaring community.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2018, 55 (127); 60-69
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Automatic Identification System on Safety of Navigation at Sea
Autorzy:
Stupak, T.
Powiązania:
https://bibliotekanauki.pl/articles/117256.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
marine navigation
Automatic Identification System (AIS)
safety at sea
Safety of Navigation
Gulf of Gdansk
vessel traffic service (VTS)
Radar Target
Radar Tracking
Opis:
Detection of small crafts/targets, in particular, sailing yachts with the ship's radar is not always possible. Radar reflectors are used to improve their detection. The AIS (Automatic Identification System) transmits position, motion vector and identification signals of a vessel to other ships and VTS (Vessel Traffic Services) centers . This system significantly increases the possibility to detect small crafts. The paper presents results of comparative study of using information from the Automatic Identification System and from radar to determine the accuracy of tracking the position and motion vector of ships in the Gulf of Gdansk. Possibilities and limitations of the AIS are also presented.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 3; 337-341
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changing the Model of Maritime Navigation
Autorzy:
Jurdziński, M.
Powiązania:
https://bibliotekanauki.pl/articles/116430.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
integrated navigation
model of integrated navigation
history of navigation
navigation process
integrated navigation model
navigation model
marine navigation
safety at sea
Opis:
The paper describes a short history related to the development of maritime transport at the turn of the 20th century. A classic navigation model used since the mid-twentieth century as well as the development directions of current integrated navigation model have been described here.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 1; 35-41
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potentials of e-Navigation – Enhanced Support for Collision Avoidance
Autorzy:
Baldauf, M.
Benedict, K.
Krüger, C.
Powiązania:
https://bibliotekanauki.pl/articles/116902.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
safety at sea
Collision Avoidance
e-Navigation, Maritime Cloud
marine navigation
Fleet Operation Centre (FOC)
Fast Time Simulation (FTS)
Risk Control Option (RCO)
Opis:
The e-Navigation initiative of IMO and IALA has stimulated and inspired a number of ambitious research projects and technological developments in the maritime field. The global transportation of goods is not only facing rapidly growing ship dimensions but also increasing industrial off shore activities, changing the relation between the need of areas for safe and reliable vessel traffic and its availability. Off shore activities is increasingly limiting the available navigable spaces and concentrating traffic flows, especially in coastal waters and port approaches. Enhanced technical systems and equipment with numerous added functionalities are in use and under further development providing new opportunities for traffic surveillance and interaction. Integrated Bridge and Navigation Systems on board modern ships not only support the bridge teams and pilots on board, but also allow for more comprehensive shore-based traffic monitoring and even allow for re-thinking of existing regimes and procedures on traffic management. A sophisticated manoeuvring support tool using fast real-time simulation technology and its application for on board support as well as for its potential integration into enhanced shore-based monitoring processes when linked with the ‘Maritime Cloud’ will be introduced. The potential for contribution to generate harmonized collision warnings will be discussed and explained. This paper is a reviewed and extended version of (Baldauf, Benedict & Gluch, 2014).
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8 no. 4; 613-617
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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