Good question. The reality is, the Coast Guard radio stations (currently Comox, Tofino, Victoria, Prince Rupert) monitor Ch 16, vessel traffic and a couple of their preferred working channels in their area, they don't have manpower or time to monitor the rest of the channels most of us use for regular chatting with other vessels. The Coast Guard do not set or enforce any boating regulations (eg. they don't check for lifejackets, or radio cards, or flares, or booze), they are a different outfit than their U.S. counterparts in that regard. The CCG Auxiliary (aka RCM-SAR volunteers) may do a pleasure craft courtesy check on the boat ramp of your safety gear and certifications, but no obligation or enforcement attached to that).
If the CCG radio operators think someone is unnecessarily tying up Ch 16 or using profanity on, they'll tell them to move to a working channel and be more responsible with their radio use. If someone is jamming channel 16 and it's a problem, they'll send out the nearest CCG vessel and get them to ping/directionally find that vessel (which they can also do if you are in distress and lost, basically hone in on you by you keying your mic on a designated frequency) to tell them their mic is jammed.
If they suspect someone of issuing a false Mayday, which is a criminal code offense, they can send a report to the RCMP and Industry Canada, as IC are the one's who set radio regulations. It's up to the RCMP and/or IC to follow up. When I take my classes on tours of the CCG radio station, the operators say most of the time a "Mayday" call starts out with the words, spoke quietly, "is there anybody out there or can anyone hear me". From there they get the info that a vessel is sinking or taking on water, etc. At the end of the day, all bets are off in an emergency and nobody is going to charge someone for using the radio to call for help if they are doing it in good faith and don't happen to use the official Mayday language or have the ROC-M card. However, knowing how to properly issue a Mayday or Mayday relay and how to efficiently and accurately give a position is one of the most important reasons to take a ROC-M course, regardless of whether you'll ever be checked for your ROC-M card on the water.
Good discussion, IMHO we can only control our own actions on the radio-- there are many people out there who are simply ignorant to the intended use of Ch. 16. Also, I just don't just rely on my radio when I'm out on my own p/c as the only way to call for help. My SPOT unit is always within arms reach or on me, portable VHF/flares in my ditch kit. A fixed VHF only works if the battery is above the water... if my boat swamps for whatever reason, likely my fixed radio won't work at that point.
Often wondered about the question posed earlier.....
I have a radio-operator's license....
My wife does not.....
We fish together often...
If for any reason I went overboard and she was left alone on the boat....and....she gets on the radio for assistance to save my life etc. (which in her case would be complete lack of verbal protocol formality)....
How hard are they going to come down on her for being an unlicensed operator?
(btw.....I too was told in the course that simply turning the radio on constitutes "operating" it)