How often should each EPIRB be tested using the integrated test circuit and output indicator?

An Emergency Position-Indicating Radio Beacon (EPIRB) should be tested using the integrated test circuit and output indicator at least once a month. This monthly testing ensures that the EPIRB is functioning correctly and remains ready for use in emergencies. Regular testing helps to identify any potential issues that could prevent the EPIRB from transmitting distress signals effectively when needed. Monitoring the condition of safety equipment like the EPIRB is crucial for maintaining safety standards aboard vessels, as it plays a vital role in search and rescue operations.

The other frequency options do not provide adequate assurance of the EPIRB's operational readiness. Testing annually or biannually could allow for undetected issues to arise, while testing every three months still does not meet the recommended monthly check that ensures optimal functionality.