The viking ship had but one large and heavy square sail.
the time of Tacitus, long before the dawn of the Viking Age.
At the same time, the significance which the word " viking " has had in our language is due in part to a false etymology, connecting the word with " king "; the effect of which still remains in the customary pronunciation vi-king instead of vik-ing, now so much embedded in the language that it is a pedantry to try and change it.
There is certainly a historical connexion between the ships which the tribes on the Baltic possessed in the days of Tacitus and the viking ships (Keary, The Vikings in Western Europe, pp. 108-9): a fact which would lead us to believe that the art of shipbuilding had been better preserved there than elsewhere in northern Europe.
9 But the devoted Anskar (801-865) went forth and sought out the Scandinavian Viking, and handed on the torch of self-denying zeal to others, who saw, after the lapse of many years, the close of the monotonous tale of burning churches and pillaged monasteries, and taught the fierce Northman to learn respect for civilized institutions.