What is indicated by the Kilo One flag?

The Kilo One flag, also known as the "Kilo" flag, specifically indicates that personnel are working aloft, which refers to activities being conducted at heights, typically above the main deck or in the rigging of a ship. This is a critical warning for other vessels in the vicinity to exercise caution and maintain a safe distance, as there may be individuals working high above and potentially in danger of falling or other related risks.

In a maritime context, it is essential to communicate the presence of personnel in such situations to ensure safety protocols are observed. This flag serves as a visual cue not only to other ships in the area but also to the crew onboard, emphasizing the need for awareness and adherence to safety measures when people are working at height.