Bob, you may be confusing the VHF station license which is not required to the Cetificate which IS required.
From the
Cdn Power Squadron, which offers the VHF course...
The ROC(M) is a Canadian Federal government issued certificate that allows you to operate a marine VHF radio.
The ROC(M) is required by anyone using a marine VHF radio or other marine radios (each person on the boat who will use the radio needs their own card). There are significant fines if you are found using a VHF or marine radio without your card.