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A Beitass, or stretching pole, is a wooden spar used on Viking ships that was fitted into a pocket at the lower corner of the sail. This innovation was used to stiffen and hold the edge of the sail when sailing close to the wind. [1] [2] [3] [4] [5]


  1. "Ship construction Topics". 
  2. "Glossary of Viking Words". 
  3. Grambs, David (1993). Did I Say Something Wrong?. Penguin Group. pp. 75. ISBN 0-452-26831-1. 
  4. Gedney, Elias. Ships and Navigation of the SCA Period. East Kingdom Guild of St Erasmus. pp. 11. 
  5. Culver, Henry B (1992). The Book of Old Ships: from Egyptian Galleys to Clipper Ships. Dover Publications.