AIS systems broadcast and receive vessel identification, position, speed, and course data over VHF radio, giving skippers a real-time picture of marine traffic in busy Pacific Northwest waters. Whether you're crossing the Strait of Juan de Fuca, running Puget Sound, or navigating the Inside Passage in low visibility, an AIS transponder or receiver adds a critical layer of collision-avoidance awareness. Elliott's stocks Class B transponders and AIS receivers from brands like Garmin to fit a range of vessel types and budgets.