Emergency Whistles

A whistle carries far further than your voice and costs you almost no energy, which is why it sits in nearly every rescue kit. The recognised distress signal is three short blasts with a pause between them, repeated until you get an answer. Pealess whistles keep working when they are wet or cold, and that matters outdoors and on the water. They weigh nothing, need no batteries and fit on a keyring, a rucksack strap or in an emergency kit.