_The summer service flying uniform_ for officers of the Navy detailed for aviation duty and for officers of the Naval Reserve Flying Corps consists of a khaki coat of the same style as the white service coat, with which the shoulder marks indicating rank are worn, khaki breeches, woolen wrap puttees of drab color, tan shoes, and a khaki cap of the same style as the white cap. _The working uniform_ for officers detailed for aviation duty and for officers of the Naval Reserve Flying Corps is a one-piece overall suit of khaki-colored cotton duck, canvas or moleskin. _Dungarees_ (or overalls), consisting of a blue denim jacket and pair of trousers, are worn by officers when working in engine and firerooms and in turrets and magazines. When the sword is worn with the service dress uniforms the belt is worn under the coat unless the pistol is worn on the belt, in which case the belt is worn outside of the coat. White gloves are worn with all uniforms on dress occasions or when the sword is worn except at battle drills or with landing forces on shore expeditions. The overcoat is a dark blue ulster-coat, reaching about midway from the knee to the foot, double-breasted, buttoning to the neck with seven large flat black buttons on each side, with a wide rolling collar, with a pocket having a vertical opening on each side above the waist, and fitted with waist straps at the back. Shoulder marks of the same design as those for the white service coat are worn with the overcoat and the rank of the wearer is indicated by stripes of black mohair braid on the lower part of the sleeve. The overcoat is lined with black, and a hood is provided to be worn over the head in very cold weather. A boat cloak or cape of dark blue cloth, cut full, with a rolling collar of black velvet is also provided for officers of the Navy. The rain coat is a black mackintosh with a cape reaching to the tips of the fingers when the arms hang naturally; and in rainy and wet weather at sea officers usually wear rubber boots, oilskin coats and “sou-wester” hats. The cocked hat for officers of flag rank (admirals, vice admirals, rear admirals and commodores) is of black silk beaver trimmed with gold lace braid as shown in the illustration, figure 3; and for all other commissioned officers, except chaplains and chief warrant officers, it is trimmed around the outer edge of the top of the crown with black silk lace braid as shown by figure 1. The blue cap for flag officers is shown by figure 4, and for captains and commanders by figure 5, the cap for officers of the Staff Corps of the rank of rear admiral is shown by figure 6, and for the same classes of officers of the ranks of captain and commander by figure 7. The decorations on the visor shown in the illustrations are embroidered in gold, with the exception of caps for chaplains of the ranks of captain and commander, which have black embroidered bands as shown by figure 8.