How many blasts should you use in an emergency?

Choosing the Right Signal

When signaling for help in a survival situation, use a signal whistle to produce a high-pitched sound that can be heard from a distance. A pea-less whistle is the best option, as it produces a more consistent and audible sound, even in wet conditions. Look for a whistle that meets the International Safety Rating (ISR) standard, which ensures it can produce a sound of at least 90 decibels at a distance of 100 yards.

Signaling Technique

To signal for help, use a series of short blasts on the whistle, followed by a minute of silence. This is known as the SOS signal, and it is widely recognized by rescue teams. Use three to four short blasts, lasting about one second each, and then pause for a minute. Repeat this process until you see or hear rescue teams. The short blasts are more effective than long ones, as they can be heard from a greater distance and are less likely to be mistaken for other sounds.

Signaling at Night

If you are lost or stranded at night, use the same signaling technique, but add a visual component to increase visibility. Use a flashlight or a fire to create a signal fire, and shine the light or place the fire in a way that creates an “S” or “O” shape. The flashing light or the smoke from the fire will help to attract attention and guide rescue teams to your location.