Automatic Identification System (AIS) is an essential part of any marine vessel. It ensures the safety of the vessel, its crew, as well as other crafts roaming the seas. Before you get an AIS and install one, there are requirements that you need to consider first.

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To get and make use of the signal, initially, you will need an AIS engine. An AIS engine is the heart of the whole system. This comes in two classes: Class A and Class B. Class A AIS engine are used in commercial shipping. It transmits through 2 channels and is almost always totally incorporated into the vessel’s navigation systems. A Class B AIS engines on the other hand are used in smaller vessels. With this contraption, you can either choose to just send or receive signal.

Other requirements you would need to comply to get a fully functional AIS, is a VHF antenna, a GPS signal, power and a display. You can choose to make use of your existing VHF antenna but you will definitely lose significant signal strength so it is advisable to get another antenna for the sole utilization of your AIS.

The AIS engine will then translate the signal before it appears on the display. There are many AIS engines available on the market. Equipment that can show the AIS signal includes, any PC and Mac based navigation system. Standalone AIS displays are also available in the market.

You could also choose to add a digital compass if you want to send your rate of turn, which will enable other vessels to project your location after your maneuver.

You will also need to register your MMSI number into the unit so it can be included in your signal. Entities receiving your signal, may it be another vessel or a Coast Guard shore station VTS can read your signal and be able to contact you by vessel name and/or call sign.