Author: Russ
AIS – which VHF band ?
A commercial vessels AIS unit has two dedicated VHF receivers and one transmitter to which the International Telecommunications Union (ITU) has allocated two dedicated frequencies,…
ARPA v AIS
Most commercial vessels will use radar and very soon every one over 300 gross GRT will have AIS too (July 2007). Why would AIS be…
Who should have AIS?
AIS introduction schedule: Mandatory carriage requirements are set for all ships of 300 GRT and over engaged on international voyages, and those of 500 GRT…
AIS broadcast data message – what is in it?
The information that is broadcasted by the AIS unit is sorted into three independent data reports and transmitted at set schedules according to the agreed…
Laptop on board
I wanted to use the Raymarine C120 as the primary means of electronic chartplotting while on board – it is interfaced to all the instruments…
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