657205b7_il_service_grades___defenceWeb__1
[0] SAN [2] Petty Officer [3] Leading Seaman [4] Able Seaman [5] Seaman [1] 
Chief Petty Officer
S t a f f S e r g e a n t
F l i g h t S e r g e a n t
C h i e f P e t t y O f f i c e r
S e r g e a n t
C o r r e c t i o n a l O f f i c e r I I
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Fact file: Comparative military and civil service grades | defenceWeb
1