RYA SRC VHF Channel Usage 4

Question 1

What is Channel 77 designated for?

Accepted Answer

Inter-ship communications

Answer

Channel 77 is designated as an inter-ship working channel, available for vessel-to-vessel communications. It is one of several channels dedicated to ship-to-ship use away from distress and port traffic.

Question 2

Which channel is designated for search and rescue operations coordination?

Accepted Answer

Channel 16 is used initially, then coordinating channels as directed by coastguard

Answer

SAR operations are coordinated initially on Channel 16 and then on channels designated by the coordinating authority (HM Coastguard). There is no single fixed SAR channel — the coastguard will direct communications.

Question 3

What is meant by 'traffic list' in VHF radio operations?

Accepted Answer

A list of vessels for which shore stations have messages waiting

Answer

A traffic list is broadcast by coast radio stations listing the names of vessels for which they have messages waiting. Vessels hearing their name should contact the coast station to receive their message.

Question 4

What is the VHF frequency range used for marine communications?

Accepted Answer

156 to 174 MHz

Answer

Marine VHF communications use the frequency range 156-174 MHz. This band provides reliable short-range communications and is internationally standardised for maritime use.

Question 5

Why are VHF channels numbered rather than referred to by their frequency?

Accepted Answer

Channel numbers are easier to communicate and remember than MHz frequencies

Answer

Channel numbers are used because they are easier to communicate clearly over the radio and simpler to remember than exact MHz frequencies. The international channel numbering system ensures all mariners use the same reference.

RYA SRC Practice Test

RYA SRC Practice Test

RYA SRC VHF Channel Usage 4