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What is AIS?
AIS (Automatic Identification System) is a technology that was
originally designed for collision avoidance. The technology was invented by
Alfons Hakans. The IMO requirement for all vessels over 299GT to carry an AIS
transponder on board came into force in December 2004.
What do the colour coded triangles mean?
Green
- Vessel sailing at 0.5 knots or faster
Yellow
- Vessel stopped or sailing at less than 0.5 Knots
Red
- Ship sailed beyond our coverage area or (rarely) have switched off their AIS
temporarily. The signal was lost between 15 and 30 minutes ago and will be
removed from the chart after 30 minutes.
Grey
- Ship sailed within our coverage area in the past, but is not currently in our
coverage area. The ship's last known position is shown by the following image 
What format is the date in?
Date is in European format so 12/11/07 means 12th November
2007.
How do I search for a ship?
Type in the name of the ship you're looking for in the box on
the left of the screen.
What is UTC?
Coordinated Universal Time (UTC) is a high-precision atomic
time standard. UTC has uniform seconds defined by International Atomic Time
(TAI), with leap seconds announced at irregular intervals to compensate for the
earth's slowing rotation and other discrepancies. Leap seconds allow UTC to
closely track Universal Time (UT), a time standard based not on the uniform
passage of seconds, but on Earth's angular rotation.
From
wikipedia
What does Visible Tracks mean on the bottom left hand side
of every chart?
This is the number of vessels that you can see on the chart at
that moment.
How often are the charts (maps) updated?
All charts (maps) are updated every 5 minutes on the subscriber
site and are a minimum of 1 hour delayed on the public site.
My port is not covered, how do I get it on the system?
You just need an AIS receiver, VHF antenna and a TCP/IP
converter. We can package this up as a ready to install kit.
Click here for more information.
What do I get as a subscriber?
You can search for vessels with our powerful search tool. There
is also a great deal more detail on each chart. In addition we have developed
state of the art notice of arrival functionality. This enables you to monitor
the progress of one or more vessels and be alerted by email the second they
arrive at a pre-determined 'trigger zone'.
Click on Services tab to see the triggers functionality.
I can't see a trigger zone in an area I am interested in.
Simply send us
an email and we will create a new trigger zone for you.
How do I advertise on AISLive.com?
There are three available adverts on each page on the website.
Click here for details on cost and how you can reach over 105,000
maritime professionals
Why can I no longer see the free site?
We have decided to focus 100% of our attention on the
subscriber site after 4 years of keeping the site free. The site attracted well
over 125,000 registered users which was a fantastic response. We hope you
enjoyed the service and we'd like to offer you a trial to the subscriber site
if you are a registered company. We are sure you will agree that it is worth
the investment we have put in to building the new service.
User Documentation
Click
here to view user documentation
If these FAQ's don't answer your question, please
email or call our Customer Services helpdesk +44 1737 379 000.
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