What should a vessel do if it receives a false DSC alarm?

When a vessel receives a false Digital Selective Calling (DSC) alarm, it is essential to report the false alarm to maritime authorities. This action is important for several reasons. First, reporting helps ensure that the frequency is not unnecessarily congested with alarm signals, allowing for effective use of communication channels. Additionally, it allows authorities to monitor alarm trends and investigate any potential issues that might be causing false alarms, such as equipment malfunctions or interference.

Maintaining clear communications and operational integrity is crucial in maritime safety. By notifying the appropriate authorities, the vessel contributes to the overall safety of navigation and aids in the efficient response to genuine distress calls. Accurate reporting also ensures that all vessels in the vicinity are aware and can take appropriate actions if they also receive the alarm.

The other options—continuing operations as usual, investigating the source immediately, or resetting the system and disregarding the alarm—do not address the need for communication and coordination with maritime authorities, which are vital for safety in maritime operations.