Originally Posted by hiljoball
There is a long standing arrangement of reciprocity for a member 'in good standing' of a class and national association in their own country to be able to participate in the open events of another country. There are many examples of Canada/US cross border events and participation in each other's events.
So if you are a member of your national authority and have a properly registered/measured/certificated boat, you may cross borders and enter events in other countries. You still must comply with event measurement controls as specified in the NOR. The arrangement also allows such a member to charter a local boat in order to compete.
Usually it is not a problem as most regattas can always handle a few more boats. The IOM class sometimes uses country ranking systems to manage entries for 'over-subscribed' events.
Need a deep enough, open enough, big enough hosting pond for the international guests to put their boats in.