(see the seal of the city of Paris of the year 1415) and elsewhere, the crescent-shaped ship with castles was in vogue, this town kept strenuously to the original Viking type. The bonnet with three rows of reefs is clearly indicated, and similarly the sheets and stays. We referred just now to the introduction of cannon as affecting the design of ships. At first they were placed on the upper deck and fired over the bulwarks, a modified pavisado of cloths or wood being hung round to conceal both guns and gunners. Next it was but an easy transition to make a hole through the bulwarks and insert the cannon. Hence we have the origin of the word “gunwale” for the top “wale” or plank. Subsequently this introduction of cannon necessitated a much higher freeboard, and in course of time tier above tier of guns, as in former times there had been tier above tier of rowers, came into being. Owing to the weight of the guns so far aloft an increase of beam became essential, but afterwards the exact opposite occurred. Lest the beams should be strained, considerable tumble-home or fall-inboard was made, so that the width of the upper deck became only about half of the greatest beam.[59] We shall see, too, how in later years this “tumble-home” was greatly exaggerated. As to the effect of the new armament on a ship’s rig, we shall be able to discuss this when we come to the bomb-ketch in Fig. 62. We have seen how the ships of England have developed into the crescent-shape by now. That, indeed, continued for some time, until the fashion came for bigger and more powerful ships under the Tudor _régime_. Practically with the end of the fifteenth century we bid farewell to the Viking influence as clearly expressed, although it were perhaps more correct to say that that design was not so much discarded in later years as absorbed: enlarged upon and modified rather than altogether supplanted. The first important addition to the Viking design was that of the fighting castles. From thence it was not a great step to add decks, guns instead of bows and arrows, two masts instead of one, and an increase of beam and subsequently of depth. CHAPTER VI. THE DEVELOPMENT OF THE SAILING SHIP FROM THE TIME OF HENRY VII. TO THE DEATH OF QUEEN ELIZABETH (1485-1603). We enter now upon a period that will always be memorable for the impetus given to maritime matters, and the consequent improvement that took place in sailing ships of all kinds. In the history of the latter there are two centuries that have witnessed the greatest developments in the production of that most beautiful of all things that man ever set himself to fashion out of wood or iron. The first of these eras was the sixteenth century, and the other was the nineteenth. But before we begin to consider the sixteenth, let us briefly sum up all that had been effected by the end of the fifteenth.