United States Navy ratings are general occupations that consist of specific skills and abilities. Each naval rating has its own specialty badge, which is worn on the left sleeve of the uniform by each enlisted person in that particular field. Working uniforms, such as camouflage Battle Dress Uniforms, utilities, coveralls, and Naval Work Uniform, bear generic rate designators that exclude the rating symbol. Just as an officer has rank, not a rate, an officer's occupation (if drawn more narrowly than an officer of the line) is classified according to designators and professional staff corps. Ratings should not be confused with rates, which describe the Navy's enlisted pay-grades.