Flag semaphore is a way of communicating at a distance by using hand flags. Information - such as the letters of the alphabet, numerals, etc - are encoded by the position of the flags. At sea, the Oscar flag acts as a signaling flag (on land, it's the Papa flag). To start signaling letters, signal J. To start signaling numerals, signal the hand flag position for numerals. To request permission to start a transmission, signal the "attention" signal(which doubles as the error signal). The one r...
