Master-at-Arms.—An upright shield.
No. 1 Surfman.—A circular life buoy surmounted by two oars crossed.
Signal Quartermaster.—Two flags crossed diagonally.
Wheelman.—A ship’s steering wheel with eight spokes.
Coxswain.—A vertical anchor crossed by a horizontal arrow.
Electrician.—A hemisphere on a vertical axis.
Electricians, First, Second and Third Class.—A device representing forked lightning, four streaks.
Sailmakers.—A closed clew iron with two eyes.
Blacksmith.—Two sledges crossed diagonally.