(Ed. note: Thanks to former student, Capt. Jay Hartland for turning me onto this great link)
You can search it here.
Info from MarineTraffic.com:
Frequently Asked Qusetions
What is AIS?
AIS is initially intended to help ships avoid collisions, as well as assisting port authorities to better control sea traffic. AIS transponders on board vessels include a GPS (Global Positioning System) receiver, which collects position and movement details. It includes also a VHF transmitter, which transmits periodically this information on two VHF channels (frequencies 161.975 MHz and 162.025 MHz – old VHF channels 87 & 88). Other vessels or base stations are able to receive this information, process it using special software and display vessels locations on a chart plotter or on a computer.Contents:
About the Marine Traffic projectHow the vessels positions are recorded?
What is AIS?
What is the range AIS covers?
How is the data collected?
How is this information displayed on this site?
How often is the data updated?
Why the map refreshes or resizes slowly sometimes?
Why some partial or strange data appears from time to time?
How the vessel's crew can help?
What notation is used for vessels?
Can I put an advertisement or a banner on MarineTraffic.com?
Can we expand the coverage to include more areas?
How can I see the position of my boat on the map?
Can the web-published information be used to enhance safety at sea?
About the Marine Traffic project
This web site is created as an academic, open project. It is dedicated in providing free real-time information to the public, about ship movements and ports and our main objective is to expand it to other research applications. The project is currently hosted by the Department of Product and Systems Design Enginnering, University of the Aegean, Greece. The initial data collection is based on the Automatic Identification System (AIS). We are constantly looking for partners wishing to install an AIS receiver and share the data of their area with us, in order to cover more areas and ports around the world.How the vessels positions are recorded?
The system is based on AIS (Automatic Identification System). As from December 2004, the International Maritime Organization (IMO) requires all vessels over 299GT to carry an AIS transponder on board, which transmits their position, speed and course, among some other static information, such as vessel’s name, dimensions and voyage details.References:
IMO: http://www.imo.org/Safety/mainframe.asp?topic_id=754
Wikipedia: http://en.wikipedia.org/wiki/Automatic_Identification_System
US Coast Guard: http://www.navcen.uscg.gov/enav/ais/default.htm
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2 comments:
I am thrilled that you guys are out there. but I noticed that you are probably pushing buttons. This was copied from the IMO sight. This is the sort of information that a paranoid security organisation would not want floating around out there. I also noticed that the BC Ferries are not coming up and there are rather a lot of them and crossing a very busy shipping lane in the Salish sea.
John Hill
Maritime security - AIS ship data
At its79th session in December 2004, the Maritime Safety Committee (MSC) agreed that, in relation to the issue of freely available automatic information system (AIS)-generated ship data on the world-wide web, the publication on the world-wide web or elsewhere of AIS data transmitted by ships could be detrimental to the safety and security of ships and port facilities and was undermining the efforts of the Organization and its Member States to enhance the safety of navigation and security in the international maritime transport sector.
The Committee condemned the regrettable publication on the world-wide web, or elsewhere, of AIS data transmitted by ships and urged Member Governments, subject to the provisions of their national laws, to discourage those who make available AIS data to others for publication on the world-wide web, or elsewhere from doing so.
In addition, the Committee condemned those who irresponsibly publish AIS data transmitted by ships on the world-wide web, or elsewhere, particularly if they offer services to the shipping and port industries.
^^ nice blog!! ^@^
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