U.S. NAVY MALE CHIEF PETTY OFFICER SERVICE DRESS BLUE UNIFORM
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The United States Navy Male Chief Petty Officer Service Dress Blue uniform, or CPO SDB for short, may be prescribed for wear year-round at official functions when Dinner Dress, Full Dress, or Formal Dress uniforms are not required. The Navy equivalent of a civilian's suite and tie, it is worn by all Noncommissioned Officers at the grade of E-7 and above, including the Master …