Because it developed in the comparatively warm and tranquil waters of the eastern Mediterranean, the Red Sea, the Persian Gulf, and the western horn of the Indian Ocean, the shipping of the ancient world retained throughout certain characteristics that make it differ very widely from the ocean-going sailing shipping, with its vast spread of canvas, of the last four hundred years. “The Mediterranean,” says Mr. Torr,[123] “is a sea where a vessel with sails may lie becalmed for days together, while a vessel with oars would easily be traversing the smooth waters, with coasts and islands everywhere at hand to give her shelter in case of storm. In that sea, therefore, oars became the characteristic instruments of navigation, and the arrangement of oars the chief problem in shipbuilding. And so long as the Mediterranean nations dominated Western Europe, vessels of the southern type were built upon the northern coasts, though there generally was wind enough here for sails and too much wave for oars.... The art of rowing can first be discerned upon the Nile. Boats with oars are represented in the earliest pictorial monuments of Egypt, dating from about 2500 B.C.; and although some crews are paddling with their faces towards the bow, others are rowing with their faces towards the stern. The paddling is certainly the older practice, for the hieroglyph chen depicts two arms grasping an oar in the attitude of paddling, and the hieroglyphs were invented in the earliest ages. And that practice may really have ceased before 2500 B.C., despite the testimony of monuments of that date; for in monuments dating from about 1250 B.C. crews are represented unmistakably rowing with their faces towards the stern and yet grasping their oars in the attitude of paddling, so that even then Egyptian artists mechanically followed the turn of the hieroglyph to which their hands were accustomed. In these reliefs there are twenty rowers on the boats on the Nile, and thirty on the ships on the Red Sea; but in the earliest reliefs the number varies considerably, and seems dependent on the amount of space at the sculptor’s disposal.” [Illustration: Egyptian ship on the Red Sea, about 1250 B.C. (From Torr’s “Ancient Ships.”) Mr. Langton Cole calls attention to the rope truss in this illustration, stiffening the beam of the ship. No other such use of the truss is known until the days of modern engineering.]