Service Undress Uniforms
Tropical Blue
The Tropical Blue (Trops) uniform is the typical uniform of the day for flotilla meetings, public education classes, boat shows or other public events, and Auxiliary member training courses. It consists of a light-blue, short-sleeve dress shirt, worn open at the collar, with insignia of office worn on shoulder boards. Complementing this are navy blue dress slacks or skirt, black socks, belt, and black dress shoes. Nametags are worn on the right breast, as on virtually all uniforms, with ribbons and other insignia on the left. Finishing off the uniform are a choice of hats, or "cover" including the formal, military "combination" cover, with the distinctive flared brim, chin strap and buttons, and pancake-like white top; or the cloth "garrison cap".
Tropical Blue Uniform Components
| Item | Description |
| Occasion | This uniform may be worn instead of the Service Dress Blue uniform except for occasions where the civilian equivalent is coat and tie. |
| Cover | Combination or garrison. Cold weather cap in inclement weather. |
| Shirt | Light blue short sleeve with epaulets. |
| Undershirt | Plain v-neck. Shirt should not show. |
| Tie | None, open collar. |
| Coat | None. |
| Trousers/Skirt | Service Dress Blue trousers or optional skirt for women. |
| Socks/Stockings | Black socks or flesh tone stockings with skirt. |
| Shoes | Black oxfords (either polished leather or corfams) or pumps with the skirt. |
| Gloves | None. |
| Insignia | Enhanced shoulder boards. |
| Ribbons/Medals | Ribbons. |
| Qualification Badges | Yes. |
| Breast Devices | Yes. |
| Nametag | Yes. |
| Belt | Black web belt with silver buckle and tip. Optional decorative Auxiliary buckle. |
| Outerwear | Windbreaker or trench coat. |
| Accessories | Cardigan or wooly-pully sweater with enhanced shoulder boards (sweaters are not authorized as outerwear). Dark blue wool or white acrylic scarf. Black folding umbrella. |
Winter Blue
The Winter Undress Blue uniform is appropriate for meetings, classroom settings, and public education as well as boating safety booths. It is not a dress uniform and is unsuitable for occasions where a degree of formality is required. It is authorized for wear only from 1 November through 31 March. It is also popular because the Winter Dress Blue shirt is not always readily available. It can be considered the winter equivalent of the Tropical Blue uniform.
Winter Undress Blue Uniform Components
| Item | Description |
| Occasion | This winter uniform is worn for more formal working situations and is appropriate in classrooms, unit meetings, and boating safety booths from 1 Nov – 31 Mar. |
| Cover | Combination or garrison. Cold weather cap in inclement weather. |
| Shirt | Light blue long sleeve with epaulets. |
| Undershirt | Plain white t-shirt or v-neck. |
| Tie | Blue four-in-hand tie. |
| Coat | None. |
| Trousers/Skirt | Service Dress Blue trousers or optional skirt for women. |
| Socks/Stockings | Black socks or flesh tone stockings. |
| Shoes | Black oxfords (either polished leather or corfams) or pumps with the skirt. |
| Gloves | Black leather (optional). |
| Insignia | Metal collar devices. |
| Ribbons/Medals | None. |
| Qualification Badges | Yes. |
| Breast Devices | Yes. |
| Nametag | Yes. |
| Belt | Black web belt with silver buckle and tip. Optional decorative Auxiliary buckle. |
| Outerwear | Windbreaker, trench coat, or Foul Weather Parka II (with or without inner liner). |
| Accessories | Cardigan or wooly-pully sweater with enhanced shoulder boards (sweaters are not authorized as outerwear). Dark blue wool or white acrylic scarf. Black folding umbrella. |