This is a signalling system based on the waving of a pair of hand held flags in a particular pattern. Flags are square and yellow and red in colour divided diagonally with the red colour on the top portion. The flags are held with arms extended in various positions, each representing each letter of the alphabet. The pattern resembles a clock face divided into eight positions (Up, Down, Out, High, Low) for each of the left and right hand.
In competition – Teams will have a sender, receiver and a recorder. A message is sent by one person using the semaphore flags. The receiver will say the letters/message he or she sees to the recorder who records the message on a sheet of recording paper. The team is marked on accuracy of the messages sent as well as received, as well as how quickly they can send the messages.