What does the term "SEELONCE" mean in radio communication?

The term "SEELONCE" in radio communication indicates that silence is required due to a distress situation. When this phrase is used, it signifies that an emergency is occurring, and all other communications should cease in order to allow the authority or vessel in distress to communicate without interference. This is crucial for maintaining clear and effective communication during urgent situations when prompt responses are necessary. Operators are expected to understand that the use of "SEELONCE" commands attention and adherence to silence in order to prioritize the safety and needs of those in distress.