 The blue uniform features the thirteen button trousers, and has three rows of white piping on the collar and cuffs.Women wear a uniform similar to female officers and Chiefs, but with silver buttons, and a cover device with a spread eagle and "USN".Before 1972, U.S. Coast Guard personnel generally wore the same uniforms as the U.S. Navy but with distinctive Coast Guard insignia, primarily distinctive cap devices for officers and chief petty officers, incorporation of the Coast Guard shield in lieu of line or staff corps insignia for officers, and differentiated uniform buttons on dress uniforms.