Hi Arch here is a link to a recent post on this and info from Marine Rescue Ken
http://www.fishraider.com.au/Invision/index.php?showtopic=51218
Below is how the comms should go
Using your Marine Radio
Keep your marine radio on the 'Distress, Safety and Calling' channel. On 27MHz this is Ch 88, on VHF it is Ch 16. Because of prevailing conditions you may be the only ship station that picks up an emergency call from another boat. On many radios, you can set up a dual watch or scan mode to also monitor other channels, such as a local repeater, or a ship to ship channel. Radio courses will explain how these modes are used effectively.
Use the appropriate 'Distress, Safety and Calling' channel to call your local Marine Rescue station. You will then be asked to go to a "Working" channel. The Duty Operator will advise which channel to change to.
Be sure to listen for any other radio traffic before making your call otherwise you may not be heard, or you may interrupt another user's transmission. Speak slowly and clearly . When making the initial call, state the call sign of the station you are calling three times and your own call sign three times. This is to help ensure the coast station knows you are calling them and who you are. For example you make a call on VHF Ch16;
You: "Marine Rescue Sydney, Marine Rescue Sydney, Marine Rescue Sydney. This is (name of your boat, eg) Firecracker, Firecracker, Firecracker".
The Marine Rescue shore station will respond and ask you to go to a 'Working'' channel.
MR Sydney: "Firecracker, Firecracker, Firecracker. This is Marine Rescue Sydney, Marine Rescue Sydney, Marine Rescue Sydney. Please go to seven three."
You : "Marine Rescue Sydney , this is Firecracker. Going to seven three."
Now change your radio channel to 73 and wait for the shore station to call you.
MR Sydney: "Firecracker. This is Marine Rescue Sydney , how can we help today?"
Seek the information you want or advise the Marine Rescue shore station of your plans. When your communications are complete advise the shore station that you're returning to the calling channel, eg
You: "Thanks Marine Rescue. Much appreciated. This is Firecracker returning to 16."
The shore station will respond:
MR Sydney: "This is Marine Rescue Sydney . Out".
Now switch your marine radio back to 16VHF radio, or channel 88 on a 27mHz radio, leave the radio on and get back to enjoy your day out.
Remember, calls on marine radios are not private conversations. This is a big advantage if you're in trouble. Many more people are likely to hear you. It's another very good reason to use your marine radio as your first means of communication in an emergency.
Use your mobile phone by all means but don't bet your life on it as your only means of communication. Only you and the person you're calling can hear you and in an urgent situation this could cost precious time reaching someone who is ready to help.
The open nature of a marine radio call also means that courtesy, good manners and appropriate language are also essential.
mrsswordfisherman