Visual signals displayed by watercraft during daylight hours to indicate their operational status or condition. These standardized geometric forms, such as balls, cones, and cylinders, convey specific information to other vessels and observers, regardless of language. For example, a vessel engaged in fishing may display a cone apex upwards to indicate its restricted maneuverability.
The use of these visual aids is essential for maritime safety and compliance with international regulations. They provide a clear and unambiguous method of communication, preventing collisions and promoting efficient navigation. Their historical roots lie in the need for a reliable signaling system before the advent of widespread radio communication, ensuring safe passage in busy waterways and challenging weather conditions.
