The UNSC Navy dress uniform differs little from those worn by members of the United States Navy five hundred years previously. It consists of a white jacket, white trousers, and a peaked cover for males and a round cover for females ranked Petty Officer and above. Both covers are adorned with an officer crest; a silver shield over two crossed gold fouled anchors, surmounted by a silver eagle. Those ranked Commander and above wear gold "scrambled egg" oak leaves on their covers, while Flag Officers may wear aiguillettes with the jacket, which are generally worn on the left hand side of the uniform. The uniform is worn with a cover, even while indoors.
While some officers were known to wear the battle dress uniform while on field operations during the end of the Human-Covenant war, the uniform did not become a staple for naval officer garb until mid-2553. Aesthetically the BDU is very similar to the 2552-era service uniform. It includes a bracer and pauldron for the firing arm as well as a large collar guard that protects the upper arm, shoulder and neck of the non-firing arm. The left side of the armored vest bears the wearer's ribbons and depending on the variant, either the seal of the UEG. The collar, right pauldron and cuffs bear the wearer's rank. The BDU has room for a holster and a soft-case and is not generally worn with a cover.
The ONI BDU maintains much of the same colors and vest design of the standard Naval BDU. However, the shoulder pads are white and instead of displaying the UEG symbol, it displays the ONI symbol.
This 2531 service uniform consisted of a double-breasted olive drab tunic, bearing the seal of the United Nations Space Command Defense Force, with the wearer's surname printed above the seal. It was worn with matching trousers, a pistol belt, and a cap also bearing the UNSCDF seal. Should the officer be in command of a ship, the Ship Emblem would be worn on the right shoulder. Medals and ribbons were not worn with this uniform.
Green Dress Uniform
This service uniform consists of a plain green shirt with shoulder pads and a collar. As well, It featured a belt that connects to two thigh guards. The Ship emblem is displayed on the left. Name is displayed on the left.
Dark Gray Dress Uniform
The service dress variant consists of a gray shirt and a matching pair of trousers, secured with a belt. In times of war a pistol is worn on the belt. A name tag displaying the officer's last name is mounted on the right hand side of the uniform while ribbons are worn on the left hand side. Rank insignia is displayed on the shirt cuffs, collar, and shoulder boards. Medals and covers are typically not worn with this uniform.
Very similar to the light gray tunic. However, the right side has a white stripe that rises from waist level. Medals are worn on the left and name tag on right. A large collar also displays the rank of the wearer.
Light Gray Tunic
This uniform variant was coloured a lighter gray than usual. Rank insignia was worn with ribbons and a name tag on the left hand side of the uniform. Shoulder pads were a gold colour.
Dark Gray Uniform
The 2557 variant of the dress uniform is different than other uniforms. The UNSC logo and name plate are both on the left. The Dress is two tone; main fabric sections are a dark gray while accent areas are black. Like previous uniforms though, rank is displayed on the neck and along the shoulders.
These uniforms offer only a little protection and are not meant for combat personnel. Though they do come in a variety of colors such as blue, red, orange, purple, and yellow. Such colors differ for what job they do, though they are not known for sure, personnel wearing orange, blue, and red can be seen operating computers on the bridge, cryo bays, and anywhere else.
Shared with Marines on UNSC carriers, enlisted naval personnel use jerseys while on the flight deck. The color of these jerseys signify their job, not their service branch. These colors and jobs include: