A Visual Guide to Nautical Flag International Codes and Signals for Maritime Boats with NATO Phonetic Alphabet and Morse Code. This colorful visual guide contains an alphanumeric list of all of the ICS Flags with the internationally recognized single-flag meanings for you to learn, along with some common 2-flag codes that may be useful to you. A list of words to identify letters during the transmission of messages called the phonetic alphabet is shown beside each flag/letter. Each letter is … [Read more...] about Nautical Flag Alphabet by three over eight