Maritime QuestionsSrc Vhf

Is a UK vessel required to hold a Ship Radio Licence to operate a VHF radio?

A. No licence is required for vessels under 24m operating inshore
B. A licence is required only for commercial vessels over 24m
C. A CB radio licence covers marine VHF use in UK coastal waters
D. Yes — any vessel fitted with a marine VHF (or other radio) that will be used in UK territorial waters or internationally must hold a Ship Radio Licence issued by Ofcom; the operator must also hold an SRC or higher qualification
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What is the primary purpose of DSC (Digital Selective Calling) on a VHF radio?
A. To send a digitally coded distress alert containing the vessel's MMSI and position automatically to all DSC-equipped stations and the Coastguard
B. To broadcast weather forecasts to other vessels
C. To make telephone calls from the vessel to shore
D. To operate the radar system remotely
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What is an MMSI number and why must it be programmed into a DSC radio before it is used?
A. A GPS waypoint identifier used in coastal navigation
B. Maritime Mobile Service Identity — a unique 9-digit number identifying the vessel; without it a DSC distress alert cannot identify the vessel to rescuers
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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