(2) Chin Strap. The chin strap is 3/8 inch wide, faced with gold lace and fastened at each end by a 22 1/2 line, Navy eagle, gilt button.
c. Garrison Cap Insignia
i. Garrison Cap. Insignia on Garrison Cap consist of one fouled anchor.
(1) Insignia is a gold metal fouled anchor 1-1/16 inches in length with other dimensions proportionate. The unfouled arm of the stock faces front. Pin it to the left side of the cap in an upright position with the center 2 inches from the front seam and 1-1/2 inches above bottom edge.
d. SLEEVE CLASS INSIGNIA
i. Consists of horizontal stripes worn on the left sleeve of blue coat to indicate class. Stripes are made of gold nylon braid 1-1/2 inches long and 1/8 inch wide with 1/4 inch spacing between stripes. They are centered midway between shoulder and elbow.
(1) Seniors. Wear three stripes.
(2) Juniors. Wear two stripes.
(3) Sophomores. Wear one stripe.
(4) Freshmen. No stripes.
e. SLEEVE RANK INSIGNIA (NROTC)
i. Midshipmen Officers. Wear stripes of gold nylon braid and a gold star on both sleeves of the blue coat. Stripes measure 1-1/2 inches long and 1/8 inch wide, centered on the outer side of the sleeve with lower stripe 2 inches above and parallel to the edge of the cuff, the stripes to be 1/4 inch apart. Center a gold embroidered, symmetrical five pointed star, 1 inch across, above the stripes. One ray of the star points down, and the point is 3/4 inch above the upper stripe.
(1) Captain. Six stripes.
(2) Commander. Five stripes.
(3) Lieutenant Commander. Four stripes.
(4) Lieutenant. Three stripes.
(5) Lieutenant (junior grade). Two stripes.
(6) Ensign. One stripe.
ii. Midshipmen Petty Officers. Wear a badge consisting of an eagle and anchor, in combination with stars and chevrons, midway between shoulder and elbow on the right sleeve of blue coat.
(3) Battalion Chief Petty Officer. Same as prescribed for Brigade Chief Petty Officer, except there are two stars arranged horizontally above the eagle.
(4) Company Chief Petty Officer. Same as prescribed for Brigade Chief Petty Officer, except there is one star, the center of which is 7/8 inch above the eagle's head.
(5) Mustering Petty Officer, Platoon. Same as prescribed for Company Chief Petty Officer, without a star above the eagle.
(6) Platoon Petty Officer, First Class. Same as prescribed for Mustering Petty Officer, Platoon omitting the arch above the chevrons.
(7) Platoon Petty Officer, Second Class. Same as prescribed for Platoon Petty Officer, First Class omitting the lower chevron.
f. SHOULDER BOARDS
i. General. There are two types of shoulder boards, one indicating class and one indicating rank. Both measure either 5-1/2 inches (men), or 4-1/2 inches (women) long and 1-3/4 inches wide with outer end squared and inner end terminating in a symmetrical peak made of dark blue cloth. They are rigid and attached on the shoulder at the inner end by a 22 1/2-line Navy eagle, gilt button snap fastener. They are worn on the coat of Full Dress White uniforms, the blue overcoat, reefer, Dinner Dress jacket and on the white tropical shirt. NROTC Marine midshipmen replace the anchor insignia on the shoulder boards with the gold, enlisted Marine Corps emblem.
ii. Class Shoulder Boards. The insignia for shoulder boards consists of a metal fouled anchor alone or in combination with stripes, indicating the wearer's class.
(1) Midshipman, First Class. Center a gold metal fouled anchor, 1-1/16 inches in length, with other dimensions proportionate, on the shoulder board with the crown 2 inches from the squared end and the unfouled arm of the stock to the front. Place one yellow stripe, 1/8 inch wide, with the outer edge 5/8 inch from and parallel to the squared end of the shoulder board (right and left)
(2) Midshipman, Second Class. Same as prescribed for Midshipman, First Class, except that there are two yellow stripes, 1/8 inch wide, placed diagonally across the shoulder board. The front edge of the bottom stripe is 5/8 inch and the rear edge of the bottom stripe is 1-5/8 inches from the squared end of the board. The stripes are parallel and spaced 1/8 inch apart; lower end to the front (right and left).
(3) Midshipman, Third Class. Same as prescribed for Midshipman, Second Class, but the upper stripe is omitted (right and left).
(4) Midshipman, Fourth Class. Same as prescribed for Midshipman, First Class, but the stripe is omitted (right and left). For women the anchor crown is 1-1/4 inches from the squared end.
iii. Rank Shoulder Marks. The insignia worn on shoulder boards consists of a star, in combination with stripe(s), to indicate the wearer's rank.