The quadremes and quinqueremes carried from three to four hundred rowers, and a ship belonging to Ptolemaeus Philopater is described as carrying four thousand rowers. From the surface of the water to the top of the prow was forty-eight cubits, or seventy-two feet, and from the water to the top of the stern fifty-three cubits, or nearly eighty feet; she had thus sufficient room for forty ranks of rowers, and the oars of the uppermost rank were thirty-eight cubits or fifty-seven feet long, the handles of which were weighted with lead, so as to balance the outer part, and thus render the long oars manageable. The lower parts of the holes through which the oars passed were covered with leather. Till the invention of the rudder, vessels were steered by two large oars, one on either side of the stern, with very broad blades. Ships were also furnished with long poles, by which they could be shoved off the ground. The triremes were fitted with two masts, and so were even smaller vessels; the larger had three masts, the largest of which was nearest the stern. They were usually of fir; and the head of the lower mast, which is at present called the top, was in the shape of a drinking cup. Some of these tops were of bronze; the largest held three men, two in the next, and one in the smallest; and breast-works ran round them to defend the occupants from the darts of the enemy. They were also furnished with tackles for hoisting up stones and weapons to hurl at the foe. Above the main-mast was a top-mast or topgallant-mast, called the distaff; the yards were hoisted up much as in the present day, and were secured by parrels or hoops to the mast. They were fitted with topping-lifts and braces. Each mast carried two square sails, and in after days the Romans introduced triangular sails. Though they generally ran before the wind, they were also able to sail on a wind, though probably not very close-hauled. Ships were supplied with weather-boards, or broad belts of canvas, to keep out the sea, and were surrounded, also, by lines of ropes one above another, to prevent the seamen from being washed overboard. Sometimes these breast-works were made of skins or wicker-work, and in bad weather were raised to a considerable height above the bulwarks. It is said that Anacharsis, upwards of 500 B.C., if he did not invent, greatly improved the form of anchors, which were already made of iron. The anchor had generally two flukes or teeth, and was then called bidens; but sometimes it had only one. We use the same terms as the ancients, to cast anchor or weigh anchor, whence the latter term is equivalent to set sail. Each ship had several anchors; that in which the Apostle Paul sailed, we know, had four, and others had eight. The largest and most important anchor was denominated "the last hope," hence, when that failed, arose the expression "the last hope gone." A buoy was used fixed to the anchor by a rope, to show the spot where it lay.