What is the main purpose of a safety transmission?

The main purpose of a safety transmission is to inform about hazardous weather conditions. This type of transmission is crucial in maritime operations as it enhances the safety of vessels at sea. It provides essential information that can affect navigation, ensuring that mariners are aware of dangerous situations that could impact their journey and decision-making.

Safety transmissions convey urgent and critical data that can help avoid accidents and protect lives by alerting crews to impending threats such as storms, high winds, or other environmental hazards. This form of communication is vital for maintaining situational awareness and ensuring that all vessels in the vicinity receive timely alerts about safety-related developments.

In contrast, the other options represent different types of communications that don’t specifically address the critical aspect of safety related to weather conditions. Routine messages and instructions to change course are standard operational communications, while information about vessel defects pertains to maintenance and safety but does not relate directly to external environmental hazards.