High Quality Content by WIKIPEDIA articles! For Chief Petty Officer both the shoulder tab insignia and the sleeve insignia from the No.1/No.2 uniforms are shown. Contents Ratings in the Royal Navy also carry trade badges on the right sleeve to indicate their specific job (the information carried on the left arm is the individual's title - e.g. a leading rate (commonly called a leading hand. As a nick-name they are known as 'Killick' as their rate badge (worn on the left arm) is a Killick Anchor) who is also in the Marine Engineering department is known as a "Leading Marine Engineering Mechanic" (LMEM), whereas someone of the same rate who specialises in gunnery (which would also make them responsible for certain seamanship aspects on the upper deck) will be known as "Leading Seaman" (LS).