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In the year of Our Lord 1000 the Norsemen first visited the shores of Vinland. They came from Greenland, a hundred years and more after their countrymen had discovered and colonized Iceland. Their ship was an open boat from fifty to seventy-five feet long, similar to the one dug from the sands at Sandefjord, Norway, in 1880, which is preserved in the museum of the university at Christiania. It was propelled by oars and had a short mast amidships on which was spread a small square sail. Both mast and sail were used only when the wind was fair. They came creeping along from headland to headland, seldom venturing out of sight of land in the unfamiliar seas. The mariner’s compass was then unknown, except perhaps to the Chinese, and the art of propelling a boat against the wind by “tacking” had not been developed, unless possibly by those same Chinese. It would have been impossible to tack in one of the Viking ships. In the first place the sail area was too small and in the second place the steering was all done from one side. A long steering oar was fastened upon a fulcrum about two feet long on the right side of the boat, the steer-board, starboard side. On one tack the oar would have been useless because submerged, on the other equally useless because it could not go deep enough to “grip” the water. To men accustomed to the icy Arctic seas, voyages southward held out no terrors; they were only pleasant summer excursions.