Separate onboard symptoms from external displays
Say whether the discrepancy appears on the vessel’s equipment, another vessel’s report, or an internet service. Preserve the observation time and exact wording. Do not infer a transmitter failure solely from an online map.
Use the authorized identity route
Identify the unit and request a controlled review of the vessel identity and configuration records. Never publish passwords or program new identity information based on a guess. The desk should confirm who is authorized to perform the requested task.
State the desired document
Distinguish troubleshooting from installation, identity correction, an annual test, or a survey-related report. Provide the vessel’s flag and class when a regulated output is involved and confirm the required approvals and certificate issuer before attendance.
The U.S. Coast Guard explains that AIS identity and configuration rules vary by device class; U.S.-sold Class B devices are not user configurable. Contact the installer, manufacturer, or authorized service route rather than attempting identity reprogramming.
U.S. Coast Guard · AIS frequently asked questions ↗Information to prepare
- AIS model and class if documented
- Observed discrepancy, source, and time
- Existing service or installation record
- Requested output and vessel authority details