(Kelly of the Clue Crew stands next to a huge land vehicle at the Marine Corps Base at Quantico, VA.)  To protect Marines from insurgent IEDs, the MRAP vehicle has a V-shaped this, a term more associated with ships, to disperse blast force
When applied to a member of the navy or marine corps, such a 
person is ... More generally of vessels in service ("the company has 10 ships 
afloat").