What exactly was a Canadian "O" boat ?

Question

What did the "O" stand for ?

Answer 1

At one point Canada was preparing a great attack against Norway. They were sure Norway was posing a great threat to the world with a huge number of ski instructors, thus causing a huge drop in Canadian ski patrol leaders. The countermeasure was to be swift and decisive. Canada was to stop production of fishing lures that were the staple of Norwegian existance. War is h**l.