Portrait Caucasian Naval Officer In Winter Whites Uniform Outside Stock Photo Download Image Now iStock Us Navy Winter Uniform Uniforms Training Ship Reina Mercedes File:US Navy 080730 N 7090S 004 Personnel Specialist 1st Class Howard Williams models the new E 6 and below Service Uniform (SU). The SU is for year round wear and replaces summer white and winter blue uniforms.jpg U.S. Naval Academy Uniforms: What Each Means