<P> The Service Khaki uniform today is reserved for commissioned officers (grades O - 1 through O - 10), chief warrant officers (current grades W - 2 through W - 5; W - 1 is not in use) and chief petty officers (grades E-7 through E-9). It is a khaki button - up shirt and trousers, worn with a gold belt buckle . The shirt features two front flap pockets and a pointed collar . Ribbons are worn above the left pocket of the shirt, with the warfare insignia above them . A nametag may be worn above the right pocket, and rank insignia is worn on the collar . The regulations for ribbons state the highest three awards, or all ribbons can be worn at once . There are two kinds of headgear authorized: a khaki combination cap is standard, but a khaki garrison cover is also authorized . Currently black and brown oxford shoes are authorized for all officers and CPOs . However, tradition and social pressure tend to restrict the wearing of brown shoes to members of the aviation community . Females are authorized to wear the same over-blouse as junior enlisted sailors . </P> <P> The Summer White Service uniform (formerly known as Tropical White Long; nicknamed the "milkman" and "Good Humor") consists of a short - sleeved white button - up shirt worn open - collared, white trousers and belt, and white dress shoes . Authorized headwear is the combination cap . Officers wear shoulder boards with this uniform, while chiefs wear metal collar insignia . The women's shirt for all ranks has shoulder straps, but carry nothing except for shoulder boards worn by officers . Like Service Khakis, Summer Whites are available in several materials (poly / cotton and Certified Navy Twill). When assigned as the Uniform of the Day, a Plan of the Day / Plan of the week will state "Summer White ." Either the All - Weather Coat, Blue jacket, or Peacoat may be worn with this uniform . While once authorized for junior enlisted, it is now restricted to officers and chiefs . Members E-6 and below previously wore a short - sleeved Summer White uniform with rate insignia on the left sleeve, but the uniform was discontinued by the Navy in December 2010 . </P> <P> The U.S. Navy underwent a comprehensive review of every uniform from 2004 through 2007, intending to replace the different working uniform for all hands and the seasonal service uniforms with a single year - round service uniform for personnel E-1 through E-6 . Accordingly, the Navy Service Uniform has replaced the Winter Blue Uniform and Summer White Uniform (both discussed below), which were phased out on 31 December 2010 when the rollout of the New Service Uniform was completed . Enlisted personnel now have a single Service Uniform . Navy Junior ROTC units also received this new uniform, where, unlike in the U.S. Navy proper, it is worn by both cadet officers and enlisted cadets . </P> <P> The Navy Service Uniform is a year - round service uniform to withstand day - to - day classroom and office - like environments where the service uniform is typically worn . It consists of a short - sleeve khaki shirt for males and a khaki weskit - style blouse for females, made from a wash and wear 75% polyester, 25% wool blend, with permanent military creases, black trousers for males with beltless slacks for females and optional beltless skirt, and a black unisex garrison cap . Silver anodized - metal rank insignia is worn on shirt / blouse collars and cap . The service uniform also includes a black relaxed - fit Eisenhower - style jacket with a knit stand - up collar and epaulets, on which petty officers wear large, silver anodized - metal rate insignia . Those entitled to wear gold chevrons continue to wear gold chevrons on the large metal rate insignia on the jacket . </P>

When does the navy change to summer uniforms
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