Signaling Distress ..
Some distress signals can only be used in daylight conditions.
Distress Cloth / Code Flags
Orange cloth/flag with a black circle and square shape, or an N over C.
Fly the distress cloth from the mast or place it on top of the boat.
Raising and lowering outstretched arms repeatedly.
Orange dye released into the water is recognised as a distress signal.