They are passed away as the swift ships; literally, like the ships of reed. The allusion is probably to the frail reed vessels of the Egyptians, of which many ancient writers speak (see Theophrastus, 'Hist.
Plant.,' 4.9; Pithy, 'Hist. Nat.,' 6.56; 13.11; Luean, ' Pharsalis,' 4.36, etc.). They were long, light canoes, formed generally of the papyrus plant, and propelled either by a single paddle or by a punting-pole.
They were fiat-bottomed and broad, like punts, with a stem and stern rising considerably above the level of the water. Isaiah speaks of them as "vessels of bulrushes," in which "swift messengers" were sent by the nations peopling the banks of the Nile (Isaiah 18:1, Isaiah 18:2).
The Euphrates boats described by Herodotus (1.194) were of an entirely different construction, and cannot be here intended. They consisted of a framework of wood, which was covered with skins, and then coated with bitumen, and resembled the Welsh "coracles."
As the eagle that hasteth to the prey; or, as the eagle that swoopeth on the prey (Revised Version). Job's observation presents to him three types of swiftness—the trained runner upon the earth, the swift ships upon the waters, and the hungry eagle in the air.
It seems to him that his life passes away as swiftly as any of these.