The British Isles are proclaimed to be in a state of blockade both by land and by sea. Every vessel of whatever nation or whatever may be its cargo that sails from the ports of England or from those of the English colonies or of countries occupied by English troops or is bound for England or for any of the English colonies or any country occupied by English troops becomes, by violating the present decree, a lawful prize and may be captured by our ships of war and adjudged to the captor.