SHIELD
Per bend Azure and Vert, on a bend Argent three fleur-de-lis of the first between an anchor fouled and Marine Corps insignia Or; on a chief embattled of the like eighteen mullets in three rows, five, eight and five of the first.
CREST
Issuing from a wreath Argent and Azure, a terrestrial demi-globe supporting an alligator of the first superimposed in base by Navy and Marine Corps swords saltirewise points down Proper.
MOTTO
On a scroll with the ends behind the cannon barrels Argent fimbriated Azure and doubled Or the words "VICTORY FROM THE SEA" of the second.
SUPPORTERS
Two traditional cannon barrels saltirewise Proper.
SHIELD
Dark blue and gold are the colors traditionally used by the U.S. Navy. Green and blue, representing land and sea areas of operation, highlight the amphibious mission of the USS New Orleans. The battlements symbolize defense and highlight the City of New Orleans being the site of Andrew Jackson's victory in the War of 1812. The eagle with the globe and anchor refers to the U.S. Marine Corps insignia and reflects the Marine Corps' role in executing LPD 18's expeditionary missions. The fouled anchor is taken from the Chief Petty Officer collar insignia and represents the sailor's role in the Navy and LPD 18. The eighteen stars represent Louisiana being the 18th state to join the Union.
CREST
The crossed Navy sword and Marine Corps Mameluke symbolize combat readiness and the teamwork between the Navy and Marine Corps. The white alligator is unique to the City of New Orleans and emphasizes the amphibious nature of USS New Orleans's mission to embark, transport and land elements of a landing force. The globe underscores the world wide mission of the ship.
SUPPORTERS
The cannons recall New Orleans's heritage and Jackson's defense of the city.