What does a securite call alert those at sea about?

A securite call is primarily a safety announcement used in maritime communication to alert those at sea about navigation or weather hazards. This type of call serves to inform mariners about significant risks that could affect their navigation and safety on the water. The purpose of a securite call is to ensure that all vessels in the vicinity are aware of the changing conditions or any potential hazards that could obstruct their safe passage.

For instance, a securite call might inform boaters of floating debris, shallow areas, or severe weather conditions that could pose a danger. This type of broadcasting is essential for maintaining situational awareness and ensuring that all vessels can take appropriate measures to navigate safely.

While other messages, such as those pertaining to medical emergencies or collision warnings, are also crucial, a securite call specifically focuses on hazards that may impact navigation, making it distinct in its function and purpose.