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This article is about a flagpole on a ship. For the superhero, see Jack Staff.
First Navy Jack being raised on a jackstaff

A jack staff is a small vertical spar (pole) in the bow of a ship, on which a particular type of flag, known as a jack, is flown.[1] The jack staff was introduced in the 1700s.[2]


  1. ^ "The U.S. Navy's First Jack". Frequently Asked Questions. Department of the Navy — Naval History and Heritage Command. Retrieved 2012-08-24. 
  2. ^ Nicolls, Cdr Bruce, OBE RN (Retd). "The Union Jack or The Union Flag?". Flag Institute. Retrieved 2012-08-24.