RYA VHF/SRC Marine radio: pre-course learning

VHF Channels

Channel Number	Use	Channel Number	Use
6	Ship to Ship	67	HM Coastguard Small Craft Safety
8	Ship to Ship	70	DSC Reserved Channel. No Voice Communications
10	MSI / Pollution Control (back up)	72	Ship to Ship
12	Port Operations	77	Ship to Ship
13	Bridge to Bridge	80	Port Operations (UK Marinas/Harbours)
16	International Distress, Safety & Calling
62, 63, 64	HM Coastguard Maritime Safety Information

Over	An invitation to reply	Mayday	Distress = Grave & Imminent Danger
Out	This is said by each station at the end of working communications	PanPan	Urgency
This is	From a station whose name or call sign immediately follows	Securite	Safety
I say again	I am repeating what i have just said	Mayday Relay
Station calling	Used when a station receives a call which is intended for it but is uncertain the ID of the calling station	Seelonce Mayday	Imposing radio silence
Read Back	Please read back the message i have sent you	Seelonce Feenee	End of radio silence
Wrong	Reply to a message that has just been 'read back' but is in error
Correct	Reply to a message that has been read back for check
Correction	Spoken when a mistake has been made. The correct words follows
Received	Your message is received and understood
Wait	If a station is unable to accept traffic immediately.
I spell	I shall spell the next word
All after	Used after the pro-words 'say again' to request repetition of a section of the message
All before	Used after the pro-words 'say again' to request repetition of a section of the message
Repeat	Used if any part of a message is considered important to need emphasising

Acronym: MIRPDANIO

M - MAYDAY X 3

I - IDENTIFICATION

R - REPEAT

P - POSITION

D - NATURE OF DISTRESS

A - ASSISTANCE REQUIRED

N - NUMBER OF PERSONS ONBOARD

I - INFORMATION

O - OVER

EXAMPLE MAYDAY CALL:

Mayday, Mayday, Mayday

This is: Powerboat Erebus, Erebus, Erebus, Callsign ZZBA, MMSI 234001234

Mayday Powerboat Erebus, Callsign ZZBA, MMSI 234001234

My Position is 50 degrees, 46 minutes N, 001 degrees 17 minutes W

Swamped in a rough sea and sinking

I require immediate assistance

Four people onboard

Abandoning to liferaft

Over

EPIRB - Emergency Postion Indicating Radio Beacon

SART - Search And Rescue Transponder

VHF - Very High Frequency

DSC - Digital Selective Calling