"Yacht on the map" - a system for finding and tracking the positions of yachts or any courts, based on data from AIS. The position of the courts and the departure-arrival at the port otobrazhabtsya in real time.
Note: The courts may be outdated by an hour or more.
"Yacht on the map" can be used only for informational purposes and can not be used to ensure the safety or navigation.
How to find a Yacht (boat) on the map?
To find a ship on the map, click on the icon with the magnifying glass icon that has appeared input form. Then start typing the name of the vessel (in English) in the top field, where it is written «Vessel, Port».
When a ship is within range of stations AIS, its name will appear in the drop-down list and will be allocated a dark color. Clicking on the name in the list, you will see a ship on the map.
If the ship is found, but at the moment is out of range AIS, its name will be gray. Please try again later.
Where are the positions of courts?
The system is based on the AIS.
What is AIS?
AIS (Automatic Identification System - Automatic Identification System) - a navigation system used to identify vessels, their size, rate and other data via radio VHF.
Recently there was a tendency to treat as AIS Automatic Information System (Eng. AIS Automatic Information System).
Currently vsremya AIS is mandatory for vessels of over 300 register and all passenger vessels. Ships and yachts with a smaller displacement can be equipped with AIS. Data transfer is carried out in international communication channels AIS 1 and AIS 2 (frequency 161.975 MHz and 162.025 MHz).
AIS is designed to improve maritime safety, efficiency of navigation.
AIS system includes the following components: VHF transmitter; VHF receiver; global satellite navigation receiver; antenna; equipment input-output information on the controls.
AIS transmitter which transmits the name of the vessel, the coordinates, speed, course, and varying the static information, such as dimensions of the vessel and details of the flight. Other vessels or base station can access this information, and with the help of special software displays the location of vessels on the chartplotter or a computer.
What is the coverage area of AIS?
Usually ships with AIS receiver connected to an external antenna, posted on 15 m above sea level, will receive information in a range of 15-20 miles. The base station is located at a higher elevation, can extend the range of reception of up to 40-60 nautical miles, even just around the corner, depending on the terrain, antenna type, antenna around obstacles and weather conditions. The most important factor is the placement of the antenna height. The higher the better. For example, the antenna is located on a mountain at an altitude of 700 m can receive signals from ships at a distance of 200 nautical miles !.
MarineTraffic system covers only certain coastal areas where terrestrial AIS foster installed base stations.
Possible reasons for which the position of the courts do not appear on the map as follows:
- The vessel is not equipped with AIS transmitter (transponder), the transponder is not working or not working properly;
- The vessel is in the area near where there is no basic AIS receiving station;
- Power Transponder is not sufficient for normal signal reception ground station;
- These are hidden from security reasons.
How often do you update the data?
In general, the map data is updated in real time! However, the position of some ships can be updated with a delay.
