The Canadian Government regulations state as of 2002, any person operating any powered recreational vessel less than 4 metres (including personal watercraft) must provide proof of competency.
As of 2009 any person operating any powered recreational vessel must have proof of competency.
Children 8 - 12 years of age have a separate test.
There is an exemption for non-residents of Canada under certain circumstances.
Further details on the PCOC click here