X-Ray Signal Flag (X) – International Nautical Signal Flag
The X-Ray signal flag, also known as the X nautical flag, is a distinctive white flag with a blue cross that represents the letter X in the International Code of Signals.
Traditionally flown by vessels to communicate a command, the X-Ray flag sends an important maritime message:
“Stop carrying out your intentions and watch for my signals.”
Used by mariners around the world, the X-Ray flag is a powerful symbol of caution, communication, and the precise language of the sea.
Our premium X-Ray 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 X-Ray 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 X-Ray flag’s clean blue and white 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