🔍 Key Concepts

• GMDSS (Global Maritime Distress and Safety System) basic voice calling/distress procedures • The internationally recognized VHF distress and calling channel used by all SOLAS and non‑SOLAS vessels • Difference between a general calling/distress channel and working/bridge‑to‑bridge channels

💭 Think About

• Ask yourself: On what single VHF channel are you always required to keep a watch for distress, safety, and calling, especially near the coast? • Which of these channels is designated worldwide for MAYDAY, PAN‑PAN, and SECURITÉ calls, before shifting to a working channel? • Think about which channels in the options are usually used for port operations/traffic or bridge‑to‑bridge rather than distress/calling.

✅ Before You Answer

• Identify which frequency/channel is known as the international distress, safety, and calling channel under GMDSS and the Navigation Rules. • Eliminate any channels commonly associated with port operations, vessel traffic service (VTS), or bridge‑to‑bridge rather than distress/calling. • Make sure the choice you pick is the one on which vessels are normally required to maintain a continuous watch, unless exempt.