There is no area where only commercial vessels are on 9. Before we get too far off course, let me list the channels that are of concern to the recreational boater:
DISTRESS SAFETY AND CALLING - Use this channel to get the attention of another station (calling) or in emergencies (distress and safety). 16
NONCOMMERCIAL - Working channels for voluntary boats. Messages must be about the needs of the ship. Typical uses include fishing reports, rendezvous,scheduling repairs and berthing information. Use Channels 67 and 72 only for ship-to-ship messages. 9, 68, 69, 71, 72, 78,
79, 80, 67.
COAST GUARD LIAISON - Use this channel to talk to the Coast Guard (but first make contact on Channel 16). 22
NAVIGATIONAL - (Also known as the bridge-to-bridge channel.) This channel is available to all ships. Messages must be about ship navigation, for example, passing or meeting other ships. You must keep your messages short. Your power output must not be more than one watt. This is also the main working channel at most locks and drawbridges. 13, 6
http://wireless.fcc.gov/marine/vhfchanl.html
Vessels of more than 20 meters are required by law to maintain a watch on 13 when in US waters.
Some of you may remember the stink we raised when district 1 decided to limit rec boaters to 9 after the FCC declared 9 as a recreational hailing channel and the letter we got from Admiral Honchowitz rescinding that practice. This is a very important safety subject and one that we should all know intimately.