Maritime Questions › Src Vhf

You witness a vessel in distress but they are not transmitting. How do you send a Mayday Relay?

A. "MAYDAY RELAY, MAYDAY RELAY, MAYDAY RELAY — ALL STATIONS — This is [your vessel name x3] — The following Mayday message was received from [vessel name] at [time] — MAYDAY [their vessel name] — [their position, nature of distress, persons on board] — Over"
B. Use DSC Ch 70 to relay — voice relays are not permitted under ITU regulations
C. Only the Coastguard can relay a Mayday — do not transmit on behalf of another vessel
D. Transmit a Pan Pan on behalf of the distressed vessel
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What is the primary purpose of DSC (Digital Selective Calling) on a VHF radio?
A. To operate the radar system remotely
B. To broadcast weather forecasts to other vessels
C. To make telephone calls from the vessel to shore
D. To send a digitally coded distress alert containing the vessel's MMSI and position automatically to all DSC-equipped stations and the Coastguard
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What is an MMSI number and why must it be programmed into a DSC radio before it is used?
A. Maritime Mobile Service Identity — a unique 9-digit number identifying the vessel; without it a DSC distress alert cannot identify the vessel to rescuers
B. A GPS waypoint identifier used in coastal navigation
C. A VHF channel number allocated by Ofcom for distress use only
D. A vessel survey certificate number required by the MCA
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