The Collaborative International Dictionary of English v.0.48:

bluejacket \blue"jack*et\ n.
   a serviceman in the navy.

   Syn: navy man, sailor, sailor boy.
        [WordNet 1.5]

U.S. Gazetteer (1990):

Bluejacket, OK (town, FIPS 6950)
  Location: 36.80051 N, 95.07333 W
  Population (1990): 175 (77 housing units)
  Area: 1.0 sq km (land), 0.0 sq km (water)
  Zip code(s): 74333

Moby Thesaurus II by Grady Ward, 1.0:

56 Moby Thesaurus words for "bluejacket":
   AB, Ancient Mariner, Argonaut, Dylan, Flying Dutchman,
   Naval Reservist, Neptune, OD, Poseidon, Royal Marine, Seabee,
   Varuna, able seaman, able-bodied seaman, boot, buccaneer, cadet,
   deep-sea man, fair-weather sailor, fisherman, frogman, gob, hearty,
   horse marine, jack, jack afloat, jack-tar, jacky, jolly, limey,
   lobsterman, marine, mariner, matelot, midshipman, midshipmite,
   naval cadet, navigator, navy man, pirate, privateer, sailor, salt,
   sea dog, sea rover, seafarer, seafaring man, seaman, shipman,
   swabbie, tar, viking, water dog, whaler, windjammer, windsailor