STANDARD MARINE DISTRESS SIGNALS (DAYTIME USE)
Lay a distress cloth on the roof of your boat or fly it from the mast;
Use dye markers to release an orange dye into the water marking the area around your boat
Fly a code flag with the letter N over the letter C, or with a square either over or under a ball;
Use your arms to call for help by repeatedly raising and lowering your outstretched arms.
You can also light a handheld orange smoke flare to signal for help.