Uniform Signal Flag (U) – International Nautical Signal Flag
The Uniform signal flag, also known as the U nautical flag, is a distinctive red and white quartered flag that represents the letter U in the International Code of Signals.
Traditionally flown by vessels to communicate a warning, the Uniform flag sends an important maritime message:
“You are running into danger.”
Our premium Uniform nautical signal flag is made from durable, weather-resistant 700D polyester and printed on both sides for a vibrant appearance from any direction. Whether displayed aboard a boat, strung together to spell a family name, or used as a unique piece of coastal wall décor, the Uniform flag brings the enduring tradition of maritime communication into your home.
Nautical signal flags are more than decorations—they are symbols of centuries of seafaring history. The Uniform flag’s bold red and white checkerboard design makes it especially popular in:
- Sailboats and yachts
- Beach houses and coastal cottages
- Nautical-themed rooms
- Maritime museums and collections
- Personalized signal flag displays spelling names and words
Ships next business day from Fall River, Massachusetts.
- Size: 10" × 15" Indoor/Outdoor
- Material: 700D Polyester
- Printing: Both Sides
- Hanging: Traditional marine-style toggle and loop
- Use: Boats, Beach Houses, Flag Poles
Please see our video: The History of Signal Flags