"Man overboard." (often attached to the man overboard pole on boats).
With a sinister hoist, the semaphore flag.
Symmetric, Closed shape, Colorful, Contains straight lines, Has no crossing lines.
More symbols in International Maritime Signal Flags:
The system of international maritime signal flags is one system of flag signals representing individual letters of the alphabet in signals to or from ships. It is a component of the International Cod… read more »
More symbols in Flags:
A flag is usually a piece of fabric with a distinctive design that is usually rectangular and used as a symbol, as a signaling device, or decoration. The term flag is also used to refer to the graphi… read more »