This is easily one of the most difficult Starfleet uniforms to make, and as it has become a hallmark of Fleet 31, this page is intended as a reference for costume makers working with and among fleet members. There are currently no patterns of this design available for purchase, although a basic template is now available to the crew.
*Click images for full-size version.*
Command / Tactical | Engineering / Operations | Science / Medical |
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The table above shows the uniform in both of the accepted modes of wear. The breast of the jacket is worn closed when On-Duty or while in more formal settings. The breast is worn open when Off-Duty or in more casual settings.
Division ColorsYellow: Engineering, Security, Operations
Teal: Sciences, Medical
Materials
All Personnel
- Belt: Can be found by searching “Star Trek belt” on Ebay.
- Body panels (black): Sew Classic Bengaline Suiting, Caviar, 3 yards
- Yoke (gray): (Wool, found in suiting section, exact name unknown), 1/2 yard
- Polar fleece (gray): 1/2 yard
- Snaps: Size 4 sew-on, 4 snaps
- Interfacing: 1 yard
- Shoulder pads: 1/4-inch covered all-purpose
- Yoke quilting thread: Mettler Metrosene Leadville 1145-623
- Twist-lock clasp: Xscapes Props Shoulder Clasp
Command / Tactical Red
- Thread: Mettler Metrosene Fire Engine 1161-601
- Invisible zipper, Barberry (length will vary)
- Sew Classic Knits Interlock Biking Red, 2 yards
Engineering / Security / Operations Yellow
- Thread: Coats & Clark Dual Duty XP General Purpose #7540dd Golden Rod
- Invisible zipper, Spark Gold (length will vary)
- Sew Classic Knits Interlock Golden Rod, 2 yards
Science / Medical Teal
- Thread: Coats & Clark Dual Duty XP General Purpose #5280dd Parrot Blue
- Invisible zipper, Rocket Blue (length will vary)
- Sew Classic Knits Interlock Tile Blue, 2 yards
Usage
Formal
Variants
Shirt
Jacket

To determine the proper length of the jacket, stand with your arms at your side and make a fist; the body of the jacket should end roughly 1/2″ above the lowest contact between the hand and leg. In the same position, the end of the sleeve should sit directly at the wrist joint such that it covers the forearm completely but leaves the hand completely uncovered.
There are 8 body panels on this uniform. These are the black sections on which the gray is later mounted. Seen in the above two photos, there are two panels in front (one approaching from each side, and thus one layered over the other) and two in back (these may be made with one piece of fabric by folding the piece in half showing the inside face and sewing about 1/8″ from the fold line from top to bottom).
In addition, there are two narrower panels connecting the front and back panels on each side under the sleeve. The seam between the panels under the sleeve should be straight. The seam between the side panel and front or back panel should be curved to allow a better fit to the wearer.
The major front and back panels meet above the shoulders, underneath the layer of gray wool.
Each sleeve is one piece, with the seam hidden between the arm and the body.
The outer edge of the entire uniform is covered with a black bias tape. When the twist-lock is engaged, the lower edges of the front gray panels should align as seen here.
The cuff stripe is presented in the same fabric as the division color shirt. It measures between 1″ and 1-1/8″, and begins 2″ above the end of the cuff.
The back belt loop is worn in the center of the back at navel level. It is trapezoidal in shape, with the top edge measuring 3″, the bottom edge measuring 2″, and total height being 2.25″. It should be quilted with fleece to provide depth to the quilting pattern, for which the first line follows the perimeter 1/4″ from the edge, and the second line follows the same shape 3/8″ further inside that. It should be attached such that the loop is flat to the back and does not show top-stitch from the attachment process.
The shoulder strap is made from the same material as the division color shirt and attaches to the back at the same lateral point as the clasp in the front. The strap measures 1.5″ wide and will need to be curved to accommodate shoulder rise. Where attached on the back, it should be stitched (while hanging downward on the back of the jacket) at the lower edge of the gray panel, then folded to sling over the shoulder and top-stitched into place over the 1/4″ line already present on the gray panel. It should be further tacked down at the top of the shoulder.
Quilting lines on the gray panels should be 3/4″ apart, starting in the middle and traveling outward toward the outer edges. The wool should be quilted to the fleece to give the quilting depth.
The 3/4″ quilting lines end 1/4″ away from the edge of all gray panels, where a top-stitch line exists around the perimeter of each panel. The quilting lines do not extend past this perimeter line.
The gray panels on the sleeve follow the same quilting process as the other gray panels. The lower edges of the panel should meet the lower edges of the gray front and back panels. These sleeve panels point at the center of the sleeve at a roughly 90º angle.
This photo shows the proper placement of the twist-lock mechanism and combadge attachment (shown here with a velcro dot).
This photo shows the proper placement of the snaps holding the breast flaps together. The first is placed inside the left shoulder (mirrored to the twist-lock mechanism). The second is placed such that when the twist-lock is not engaged, the folded flap will form a right triangle with lines along the horizontal and vertical. The other two snaps should be placed at belt height, such that any bulge from them is hidden by the belt.
The front/side belt loops are placed just to the outside of the front black panels at navel height. This photo shows the relative height of the lower snaps and the belt loops.
This uniform has a total of three belt loops: the one back belt loop seen above, and one at each side. The side belt loops are 3″ in height, with a top-stitch 1/4″ from the edge. Interfacing is strongly recommended.
Boots and Pants
Badge Placement
Ranks
O-11: Fleet Admiral (FADM) | ||
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O-10: Admiral (ADM) | ||
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O-9: Vice Admiral (VADM) | ||
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O-8: Rear Admiral Upper Half (RADM) | ||
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O-7: Rear Admiral Lower Half (RDML) | ||
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Line Officers
O-6: Captain (CAPT) | ||
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O-5: Commander (CMDR) | ||
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O-4: Lieutenant Commander (LCDR) | ||
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O-3: Lieutenant (LT) | ||
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O-2: Lieutenant Junior Grade (LTJG) | ||
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O-1: Ensign (ENS) | ||
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Cadet
For information on the Cadet version of this uniform, please see the variants page.
C-4: Cadet 1st Class (CAD1) | ||
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C-3: Cadet 2nd Class (CAD2) | ||
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C-2: Cadet 3rd Class (CAD3) | ||
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C-1: Cadet 4th Class (CAD4) | ||
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Enlisted Crew
E-9: Master Chief Petty Officer of Starfleet (MCPOS) | ||
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E-9: Master Chief Petty Officer (MCPO) | ||
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E-8: Senior Chief Petty Officer (SCPO) | ||
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E-7: Chief Petty Officer (CPO) | ||
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E-6: Petty Officer 1st Class (PO1) | ||
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E-5: Petty Officer 2nd Class (PO2) | ||
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E-4: Petty Officer 3rd Class (PO3) | ||
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E-3: Crewman 1st Class (CRM1) | ||
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E-2: Crewman 2nd Class (CRM2) | ||
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E-1: Crewman 3rd Class (CRM3) | ||
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