Raymarine AIS4000 Class A AIS

The Raymarine AIS4000 Class A AIS transponder is the standard-issue solution for commercial vessels, fishing boats, and serious cruisers operating in international waters. This Class A unit broadcasts your vessel's position, course, speed, and identification to every AIS-equipped boat and coastal authority within range—typically 20+ nautical miles depending on antenna height and sea state. For anyone spending extended time on the water, AIS integration transforms situational awareness and collision avoidance from guesswork into real-time intelligence that meets both SOLAS maritime regulations and your own survival priorities.

Built on proven Raymarine engineering, the AIS4000 combines dual VHF receive channels with Class A transmit capability, allowing simultaneous reception and broadcast without gaps in coverage. The unit weighs 8 lbs and integrates seamlessly with Raymarine chartplotters and multifunction displays via NMEA 0183 or 2000 protocols, feeding live target tracking directly to your navigation screen. The Class A designation ensures compliance with international shipping conventions while delivering superior transmit power—critical when operating in heavy maritime traffic or during emergency situations where your signal must cut through congested VHF channels.

Commercial fishing vessels, cargo operators, and charter captains rely on Class A AIS to meet regulatory requirements and reduce risk in congested shipping lanes and busy coastal zones. The Raymarine AIS4000 pairs with external antennas (typically mounted high on the mast for optimal range) and requires standard 12/24V DC power. Installation works with existing Raymarine systems or standalone marine electronics, though professional marinization ensures proper grounding and antenna placement—factors that directly impact your transmission range and reception reliability when lives depend on accurate position reporting.