Canadian project

[David Ellery]

Hi there, this carrier which belongs to a friend has come out into the daylight after 20 odd years in a shed, Its currently residing at my place until its time for restoration. Whats unusual with this carrier are the grind marks found all over the armour plate, even the hull sides, the marks are in places that only could have gotten there before assembly. What was the purpose for them? and was it common on Canadian carriers at some stage ? As I've never noticed this before on any other carriers. Thanks David...