The CV indicates an Aircraft Carrier. The A at the end indicates it is designed for Attack use. The US Navy does not currently have any CVAs.
CV is for Aircraft Carriers.
CVN is a Nuclear Powered Aircraft Carrier
Attack Aircraft Carrier
That is the ship's designation. The CV stands for Aircraft Carrier. The A typically refers to Axillary, or something that is not full sized. CVA-60 was the USS Saratoga, the last steam powered carrier in the US Navy.
United States.
The term "NAR" doesn't refer to a Navy ship - it's the standard Navy acronym for Naval Air Reserve.
Landing Helicopter Assault
Could mean, United States Ship (USS). Example of use; USS Saratoga (a US Navy Ship).
A large US Navy ship.
The USS Constitution is the oldest comissioned ship in the US Navy. The USS Constitution is "Old Ironsides" and is the oldest ship still commissioned by the U.S. Navy.
In the US Navy, USS stands for United States Ship. It is a prefix used to designate a ship as belonging to the United States Navy. For example, USS Arizona or USS Enterprise.
USS Cole
An SH is a Ship's Serviceman (Barbers, Shopkeepers, etc.). An SHCS is a Senior Chief (E-8) Ship's Serviceman (read Ship's Serviceman Chief Senior).
PCU stands for Pre-Commissioning Unit in the context of a US Navy ship. It is used to designate a ship that is currently under construction and has not been formally commissioned into active service yet. The PCU prefix is typically dropped once the ship is commissioned and officially enters service.
Landing ship tank-type of vessel