A vessel certified for service in Sea Area A-2 is required to maintain watch on:

A vessel certified for service in Sea Area A-2 is required to maintain a continuous watch on 2187.5 kHz, which is designated as the VHF Data Link (VDL) frequency. This frequency is used for automated distress and safety message transmission, allowing vessels to receive and send critical information while in the designated area of sea.

The 2187.5 kHz frequency also serves as a beacon for vessels to monitor distress communications. It is important to keep a listening watch on this frequency as it will enable the vessel to respond to emergencies and receive important safety information that is relevant to operations, such as navigational warnings or other vital messages.

This requirement is part of the Global Maritime Distress and Safety System (GMDSS), which enhances maritime safety and ensures that vessels are prepared to communicate in emergency situations effectively.