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AIS - Automatic Identification System


International vessels over 300GT and Costal vessels over 500GT all carry Class A AIS Transceivers. These devices broadcast vessel information such as location, speed and course, along with other less critical data, all in real time. The transmitted data can be received by any other vessel, and this data can be used to display that vessel on your own chartplotting or Radar display.

It is now recommended that smaller commercial and leisure vessels carrying Class B Transceivers.

Receive only.

These units only receive data and are really only recommended for shore based, static systems such as Coastwatch Stations or those wishing to feed data into systems such as www.vesselfinder.com. We no longer recommend fitting these to boats as you can not be seen by other vessels.

Transceivers.

These units both receive other vessels and transmit your location, speed and course data to other vessels. With a Transceiver, you appear on everyone elses screens! Class B Transceivers are aimed at vessels under the 300T threshold. They are not a statutory requirement, but are highly recommended. For sensitive situations such as yacht racing and possibly fishing, where you may not wan to share your location or speed, these do have the ability to be silenced for short periods. This is a useful when passing through areas where Pirates frequent!

Class B has two variations, please read this article which explains the differences The two types of Class B, SOTDMA and CSTDMA

Class A Transceivers

are primarily for larger commercial vessels, but certain commercial environments for example windfarm construction, the clients demand the higher specification Class A systems on all vessels.

Antenna Splitters

allow AIS units to share an existing VHF antenna with your VHF transceiver, saving the need to install a second antenna.

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em-trak A200 Class A AIS Transceiver - 425-0012

em-trak A200 Class A AIS Transceiver - 425-0012The A200 is the world’s most advanced commercial..

RRP Inc VAT: £2,391.60
Our Price: £1,899.00
Ex VAT: £1,582.50

em-trak B200 High Power Class B AIS Transceiver - 429-0007

em-trak B200 High Power Class B AIS Transceiver - 429-0007Em-trak B200 is a high transmit power ..

RRP Inc VAT: £1,548.00
Our Price: £1,229.00
Ex VAT: £1,024.17

em-trak B400 Class B AIS Transceiver - 427-0003

em-trak B400 Class B SOTDMA AIS Transceiver with Display - 427-0003The B400 is a fully cert..

RRP Inc VAT: £1,759.20
Our Price: £1,399.00
Ex VAT: £1,165.83

em-trak B921 Class B AIS Transceiver - 430-0001

em-trak B921 Class B AIS Transceiver - - 430-0001The B921 is a standard power (2W CSTDMA) A..

RRP Inc VAT: £702.00
Our Price: £559.00
Ex VAT: £465.83

em-trak B922 Class B AIS Transceiver with WiFi and Bluetooth - 430-0003

em-trak B922 Class B AIS Transceiver with WiFi and Bluetooth - 430-0003The B922 is a standard po..

RRP Inc VAT: £1,039.20
Our Price: £799.00
Ex VAT: £665.83

em-trak B923 Class B AIS Transceiver with Integrated Antenna Splitter - 430-0005

em-trak B923 Class B AIS Transceiver with Integrated Antenna Splitter - 430-0005The B923 is a st..

RRP Inc VAT: £914.40
Our Price: £709.00
Ex VAT: £590.83

em-trak B924 Class B AIS Transceiver with Integrated Antenna Splitter, WiFi and Bluetooth - 430-0007

em-trak B924 Class B AIS Transceiver with Integrated Antenna Splitter, WiFi and Bluetooth - 430-0007..

RRP Inc VAT: £1,320.00
Our Price: £1,029.00
Ex VAT: £857.50

em-trak B951 Class B SOTDMA 5W AIS Transceiver - 430-0009

em-trak B951 Class B AIS Transceiver - 430-0009The B951 is a high transmit power (5W SOTDMA)&nbs..

RRP Inc VAT: £843.60
Our Price: £659.00
Ex VAT: £549.17

em-trak B952 Class B SOTDMA 5W AIS Transceiver with WiFi and Bluetooth - 430-0011

em-trak B952 Class B SOTDMA 5W AIS Transceiver with WiFi and Bluetooth - 430-0011The B952 is a h..

RRP Inc VAT: £1,178.40
Our Price: £919.00
Ex VAT: £765.83

em-trak B953 Class B SOTDMA 5W AIS Transceiver with Integrated Antenna Splitter - 430-0013

em-trak B953 Class B SOTDMA 5W AIS Transceiver with Integrated Antenna Splitter - 430-0013The em..

RRP Inc VAT: £1,054.80
Our Price: £825.00
Ex VAT: £687.50

em-trak B954 Class B SODTMA 5W AIS Transceiver with Integrated Antenna Splitter, WiFi and Bluetooth - 430-0015

em-trak B954 Class B SODTMA 5W AIS Transceiver with Integrated Antenna Splitter, WiFi and Bluetooth ..

RRP Inc VAT: £1,460.40
Our Price: £1,139.00
Ex VAT: £949.17

em-trak AIS SART100 - 409-0018

em-trak AIS SART100 - 409-0018The em-trak SART100 is a IMO-SOLAS certified AIS search and r..

RRP Inc VAT: £702.00
Our Price: £559.00
Ex VAT: £465.83

em-trak GPS100 External GPS Antenna for AIS Transceivers - 304-0055

em-trak GPS100 External GPS Antenna for AIS Transceivers - 304-0055An optional external GPS antenna ..

RRP Inc VAT: £91.00
Our Price: £79.00
Ex VAT: £65.83