Flying a Canadian flag does not require registration. A pleasure craft is not required by law to fly a flag. But again if you are in foreign waters the bureaucrats may get testy if you do not follow ettiquette.
thanks, boatpoker, I read on the transport Canada web site that flying a flag does require registration. If course, it doesn't say for what kinds of vessels. Can you provide some kind of reference that pleasure crafts are exempt from registration for flying a canadian flag?
As for bureaucrats, they must follow some kind of law, if there is no law that requires a pleasure sailboat to fly a flag, then it shouldn't be a problem, right?