Nautical Signal Flag Siera - My engines are going full speed astern

Nautical Signal Flag Sierra

The Nautical Signal Flag Sierra is a part of the International Code of Signals. This flag represents the letter "S" in the nautical alphabet and is used to signal "I am operating astern propulsion" when flown alone.

This flag is essential for maritime communication, indicating the movement and operation of a vessel in reverse. The design of the Sierra flag consists of three vertical stripes: blue, white, and red from hoist to fly.

• Letter: S
• Meaning: I am operating astern propulsion
• Pattern: Blue, white, and red vertical stripes
• Usage: Part of the International Code of Signals for maritime communication