Most sailing vessels are equipped with a VHF radio onboard, including a DSC Distress function.
When a ship’s crew activates the red distress button, a DSC distress is transmitted via digital signals, containing the time, position, and maritime identification of the ship. The signal is automatically repeated multiple times. Ideally, nearby ships and coast stations receive these messages and provide assistance, following international conventions.
However, in remote locations, neither other ships nor coastal stations may be close enough to receive that distress message.
VDES satellites are designed to receive digital signals from ships operating in the VHF band. VHF DSC Distress signals can be decoded on board those satellites. Once received, these transmissions are relayed to the ground to alert relevant authorities and/or other ships in the surrounding area.
By subscribing to the service, a Rescue Coordination Center will receive the VHF DSC Distress Messages as soon as possible to aid their decision-making process.
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