Sierra Signal Flag (S) – International Nautical Signal Flag
The Sierra signal flag, also known as the S nautical flag, is a distinctive white flag with a blue square center that represents the letter S in the International Code of Signals.
Traditionally flown by vessels to indicate a reduction in speed, the Sierra flag communicates an important maritime message:
“I am operating astern propulsion.”
Our premium Sierra 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 Sierra 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 Sierra flag’s clean white and blue 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