About the time of Edward I. two-masted ships became more general. One of the first acts of his reign was to revive the wool trade between England and Flanders: this necessarily made for the extension and progression of shipping. Fig. 40 represents the seal of the town of Dam in West Flanders. The actual date of the seal in the British Museum, from which this has been drawn, is 1309, or two years after the death of Edward I. This represents one of the larger or barge class of ships. The most striking feature is her apparent modernity, for if we were to remove the fore- and stern-castles and rig her as a ketch by adding a mizzen-mast and triangular headsails we should have before us one of those black traders which even the most casual observer must have looked at many times during his summer holidays by the sea. She marks a very decided departure now from the Viking type, but we must remember that she represents only one species of ship. The prevailing type elsewhere in Northern Europe continued to be a modification of the Norwegian. The ship before us would be rigged with the usual single squaresail. Perhaps also she used a smaller square headsail occasionally, as the bowsprit is present, but the most important feature of all is the change that has come in the steering arrangement. Hitherto we have always seen the rudder at the side; but now we get to that stage where the rudder is placed at the extreme stern of the ship, where it has remained ever since. Such a ship as this in the North Sea would be no doubt the counterpart of the Mediterranean _buzzo_ of the same century. I believe this ship of Dam (spelt also Damme) to be the earliest illustration of any North European vessel showing the rudder thus placed, although the seal of Poole dated 1325 has her rudder also in this position. The Viking ships of Norway did not adopt this steering method until the beginning of the fourteenth century also. In England there is an additional example in a man-of-war built for Edward III. at Lynn, Norfolk, in 1336. She was named _La Félipe_. It is worth remembering that it was off Damme that the English fleet in the reign of John inflicted a severe defeat upon the French.