... soon as he captures them : from that moment the current of their imports is cut off and, as seaports, they cease to exist. Dunkirk has a good trade, but the other three Channel ports, Boulogne, Calais and Ostend, are unimportant as cargo ports. It is their ...

... when Napoleon threatened us with invasion and defeat. Assuming that all the ports facing our shores, including Calais and Dunkirk, are in enemy hands, and not unusable through the sinking of block-ships in the fairways, to what nature and scale of attack ...