Jack (flag)
A Jack is a national flag flown by warships, and certain other vessels (like the ships of the U.S. Coast Guard and the National Oceanic and Atmospheric Administration in the case of the jack of the United States), at the jackstaff, at the bow of the ship, while the ensign is flown on the stern.
The word jack is said to result from the signature Jacques of King James I in whose reign (1603-1625) the Union Jack was designed.[1]
These are usually flown while alongside, moored or at anchor, as by Royal Canadian Navy regulations,[2] and when the ship is dressed overall on special occasions. Jacks in the Royal Navy must be run up when the first line is ashore when coming alongside.
In the United States, the First Navy Jack is also used by the United States Naval Special Warfare Command as uniform patches.[3]
A recent controversy at The Citadel, The Military College of South Carolina over a Confederate Jack, model 1863–1865, ended when the school's Board of Visitors voted in favor of moving the flag from the Chapel to what was called "an appropriate location on campus."[4]
Gallery of jacks
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Canada
(Auxiliar)