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

AIS Class B 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.

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AIB1000 – Self-contained AIS Transponder

$999.95

“AIB1000 is a ruggedized, fully self-contained Class B AIS vessel tracking transponder – ideal for small vessel tracking and monitoring.”

iAISTX Plus – AIS Transponder with Wi-Fi & NMEA 2000

$849.95

“iAISTX Plus is an AIS transponder with a wireless interface for tablet & PC navigation and also has a NMEA 2000 interface (with integral drop cable) to integrate with modern plotters, instruments and multi-function displays to provide AIS functionality.”

iAISTX – AIS Transponder with Wi-Fi

$749.95

“iAISTX is an AIS transponder with a wireless interface designed specifically for the growing number of boaters who use a tablet for their navigation tasks.”

CLA2000 – Class A AIS Transponder

$2,599.95

“CLA2000 is the ultimate SOLAS and inland waterway globally approved Class A AIS transceiver. “

AIT5000 – Class B+ AIS Transponder with Wi-Fi, NMEA & VHF Splitter

$1,299.95

“The AIT5000 is a Class B+ AIS Transponder with a 5W power output, a Wi-Fi interface, a built-in VHF splitter and utilises SOTDMA format transmissions.”

AIT2500 – Class B+ 5W AIS Transponder

$999.95

“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.”

Nomad 2 – Portable AIS Transponder

$949.95

“Nomad 2 is a 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. It ships with a compact combination VHF and GPS antenna.“

Here is a table to help you choose between our current models:

Features iAISTX & iAISTX Plus AIT2500 AIT5000 Nomad2 AIB1000 CLA2000
Type of AIS & Transmit Power 5W Class B+ 5W Class B+ 5W Class B+ 2W Class B 2W Class B 12.5W Class A
Transmit Rate Up to every 5 secs Up to every 5 secs Up to every 5 secs Every 30secs Every 30secs Up to every 2secs
Guaranteed Time Slot Allocation Yes Yes Yes No No Yes
Voyage Data No No No No No Yes
Power Supply 12/24V 12/24V 12/24V USB Internal Battery or 12/24V 12/24V
External or Built-in GPS External GPS External GPS External GPS External GPS Built-in GPS External GPS
Built-in VHF Splitter No No Yes No No No
NMEA 2000 Yes for Plus Version Yes Yes No No Yes
NMEA 0183 No Yes Yes No No Yes
Wi-Fi Yes No Yes Yes No Yes