I certainly agree that the category of “ocean war grave” should be separate. The activities of all our military and the merchant navy are part of Canada's heritage, but I believe there should be a distinction for ocean war graves, because the concept is distinct from cemeteries.
It's important to keep in mind that the Canada Shipping Act does not apply to state vessels, which means warships, of course. In fact, warships are exempt from practically all conventions under the United Nations. Because they are exempt, there have to be provisions made by the state concerning them, concerning their conduct, and also concerning their disposition.