Visual Distress Signals

Vessel operators use Visual Distress Signals (VDSs) to signal for help during an emergency. VDSs are classified as day signals (visible in bright sunlight), night signals (visible at night), or both day and night signals. VDSs are either pyrotechnic (smoke and flames) or non-pyrotechnic (non-combustible). All VDSs must be in serviceable condition, readily accessible, and certified as complying with U.S. Coast Guard requirements.