What does DSC stand for in maritime communication?

Digital Selective Calling (DSC) is a vital component of maritime communication that enhances the safety and efficiency of distress and routine communications on the water. DSC operates as part of the Global Maritime Distress and Safety System (GMDSS) and allows vessels to send and receive distress alerts automatically using digital signals. This technology provides a more precise and reliable means of communication compared to traditional voice calls.

The key function of DSC is its ability to initiate a distress call or relay important information while requiring minimal operator intervention. When a vessel issues a DSC distress alert, it automatically transmits its position and other vital information to nearby ships and shore stations, which significantly improves response times during emergencies.

In this context, the phrase "Digital Selective Calling" emphasizes the use of digital signals for selective communication among vessels, ensuring that alerts reach the appropriate parties without unnecessary congestion on the radio frequencies. This system is crucial for maintaining safety at sea, especially in emergency situations where prompt communication can save lives.