AIS Transponders


AIS transponders allow you to receive data from vessels close to you, but also to transmit your vessel’s identity, position, speed and heading as well as other relevant information to all other vessels equipped with an AIS system within your range. There are 3 types of AIS transponders: Class A, Class B and Class B+.  They all interoperate.

Class A AIS transponders are mandated for vessels over 300 tons, fishing vessels over 15m, passenger carrying vessels and for SOLAS Convention

AIS Class B transponders are for recreational craft installation and have a transmission power of 2W (range of about 10 miles).  AIS Class B+ (also called Class B SOTDMA) use the same SOTDMA technology as a AIS Class A transponders and therefore have the same priority when it comes to reserving a slot, thus ensuring that they will always be able to transmit, even in high traffic areas. They have a transmission power of 5W.


  • AIT1500 Class B Transponder

    $599.95

    “Entry level AIS Transponder with industry standard NMEA0183 interface and internal GPS antenna that makes installation aboard smaller fibreglass (GRP) boats much quicker and easier.”

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  • AIT1500N2K

    $599.95

    “An easy to install Class B AIS transponder with plug 'n play NMEA 2000 interface. Built in GPS antenna and ideal for use on smaller yachts and boats like RIBs and center consoles.”

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  • AIS Transponder with a VHF Antenna

    AIT2000 + VHF Antenna

    $659.95

    Ultra-compact AIS Transponder Class B that uses the latest AIS transponder technology. The VHF antenna is supplied for free.

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  • AIT2000

    $659.95

    “The AIT2000 uses the latest AIS Transponder technology to squeeze more performance and interfacing options in to a housing that is half the size of our previous generation transponder.”

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  • Nomad

    $749.95

    “Nomad is the first portable AIS navigation solution from Digital Yacht. It is a class B AIS transponder with a wireless and USB interface built in for tablets and PCs”

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  • AIT2000 + GV30 BUNDLE (COMBO VHF+GPS ANTENNA)

    $759.95

    “This AIT2000 plus GV30 bundle is ideal for smaller boats and tenders, providing a single combination VHF+GPS antenna solution that makes installation easy and simple.”

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  • AIT2500 is a Class B AIS SOTDMA Transponder

    AIT2500

    $799.95

    “The AIT2500 is a full function Class B+ SOTDMA AIS transponder with NMEA 0183, NMEA 2000 and USB data outputs. It is supplied with a GPS antenna.”

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  • AIT3000

    $999.95

    “AIT3000 is a class B AIS transponder with a built-in VHF splitter. It’s also been designed with the latest interfacing capability including NMEA 0183, NMEA 2000, USB and a WiFi server to allow tablets, smartphones and PCs to connect.”

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