Radar Picket Destroyer
DDR stands for Destroyer Escort (Radar Picket). It refers to a type of ship that was designed and used by the US Navy during World War II and the Cold War era. These ships were smaller than traditional destroyers and were primarily used for anti-submarine warfare and providing radar coverage for larger fleet units.
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.
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).
USS Cole
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
The logo for the US Navy is a bald eagle with spread wings, stood in front of the US flag. The logo for the US Navy Seals, however is a bald eagle on an ancor, in front of a ship.