1. International Maritime Flag System Presented by Genevieve Scott https://ibdesignsusa.files.wordpress.com/2013/01/j- nauticalflagsgalone.jpg

2. Overview History of code flags and the International Maritime Flag System Flag Use

3. History of the System 1855: code was drafted 1857: published by the British Board of Trade – 18 flags, 17,000 messages, and 70,000 signals 1932: 6 more flags added for other languages 1947: code became responsibility of the Inter-Governmental Maritime Consultative Organization 1969: even more flags added and each alpha- numeric code was assigned meaning Purpose: To establish rules for maritime communication everyone can understand

4. Flag Use 26 square letter flags 10 number pendants Red, white, yellow, and blue Combinations have different meanings 1 flag signal: urgent or common 2 flag signal: distress or maneuvering 3 flag signal: compass points, standard times, verbs, punctuation, or general code and decode signals 4 flag signal: names of ships, geographical signals, or bearings 5 flag signal: time and position 6 flag signal: direction in lat & lon 7 flag signals: lon signals greater than 100 degrees

5. Summary Communication System In place for over 150 years 36 flags Over 70,000 signals and 17,000 messages Combinations have different meanings

6. References http://www.allstarflags.com /facts/history-behind- nautical-flags/ http://www.allstarflags.com /facts/history-behind- nautical-flags/ http://blog.cvsflags.com/flag -history/nautical-flag- history-using-flags-as-ship- signals http://blog.cvsflags.com/flag -history/nautical-flag- history-using-flags-as-ship- signals