On each sleeve of the blue coat, OCs wear gold color metal bars identical to the shirt collar rank insignia to indicate rank. OC Petty Officers do not wear rank sleeve marks. Shoulder Boards . Shoulder boards are the same design for males and females, except that female OCs and MIDN do not wear shoulder boards on the Dress White Coat. MIDN shoulder boards are worn with the bitter end of the fouled anchor facing aft.
Class marks are as shown below.
Rank Shoulder Boards will be worn by MIDN, ECPs, and NECPs. The insignia worn on the shoulder boards consist of a star, combination with bars to indicate the wearer's rank. Coat Collar Insignia . MIDN and OCs wear the coat collar anchor insignia on the collars of blue coats. Marine Option MIDN wear the gold enlisted USMC emblem.