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Wyświetlanie 1-5 z 5
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:
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:
ECDIS issues related to the implementation of the carriage requirements in SOLAS Convention
Autorzy:
Weintrit, A.
Powiązania:
https://bibliotekanauki.pl/articles/393231.pdf
Data publikacji:
2015
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
ECDIS
electronic navigational charts
IMO
marine navigation
ITS
transport telematics
safety of sea transportation
SOLAS Convention
elektroniczne mapy nawigacyjne
nawigacja morska
telematyka transportowa
bezpieczeństwo transportu morskiego
konwencja SOLAS
Opis:
In the paper the author tries to present the results of monitoring the implementation of the Electronic Chart Display Information System (ECDIS) to ensure that issues identified in regard to the anomalous operation of some ECDIS are collated, analyzed, communicated and resolved as speedily as possible to maintain the safety of navigation and to assist the smooth transition from paper to digital navigation.
Źródło:
Archives of Transport System Telematics; 2015, 8, 1; 35-40
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Guidelines on the display of navigation-related information received by communication equipment at sea
Autorzy:
Weintrit, A.
Powiązania:
https://bibliotekanauki.pl/articles/393505.pdf
Data publikacji:
2018
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
marine navigation
IMO
navigating-related information
display
e-navigation
nawigacja morska
wyświetlacz
e-nawigacja
Opis:
This paper presents draft guidelines on the display of navigation-related information received by communications equipment elaborated by the International Maritime Organization (IMO) [3]. It aims mainly to ensure that information is displayed in an efficient, reliable and consistent format, in a manner that is easily and accurately interpreted to support decision-making process. These guidelines supplement resolution MSC.191(79) Performance standards for the presentation of navigation-related information on shipborne navigational displays [7] in regard to the presentation of navigation information received via communication equipment. The use of these guidelines will ensure that navigation information received via communications equipment is displayed in a harmonized manner on the ships’ navigational bridge. The availability of electronic data that enhances the safe and efficient navigation of ships necessitates that shipborne systems capable of presenting this information to the user should do so in a harmonized and readily assimilated way.
Źródło:
Archives of Transport System Telematics; 2018, 11, 3; 57-62
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The concept of time in navigation
Autorzy:
Weintrit, A.
Powiązania:
https://bibliotekanauki.pl/articles/116645.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
time
marine navigation
positioning
Navigation and Timing (PNT)
Greenwich Mean Time (GMT)
Universal Time Coordinated (UTC)
International Atomic Time TAI
Global Navigation Satellite System
history of navigation
Opis:
The article discusses the concept of time in navigation, especially in marine navigation, as well as selected time measures, among others: Greenwich Mean Time (GMT), Universal Time Coordinated (UTC), International Atomic Time TAI (Temps Atomique International), GPST (Global Positioning System Time) eLoran Time and interrelation between these measures. Understanding how time is involved in navigation, and using it, is one of the navigator's most important duties. Nowadays we have satellite navigation to help us know where we are. These satellites contain several very precise and accurate clocks, because time and location are completely and totally inter-related in satellite navigation. There is growing interest internationally concerning the vulnerability Global Navigation Satellite Systems (GNSS) to natural and man-made interference, plus the jamming and spoofing of their transmissions. These vulnerabilities have led to a demand for sources of resilient PNT (Positioning, Navigation and Timing) [16], including a robust means of distributing precise time nationally and internationally.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 2; 209-219
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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