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In the early 20th century the US "International Code of Signals" was a very progressive way for vessels to communicate important messages regarding matters of safety and navigation. The edition of 1907 contained three sections: the first part depicts urgent and important signals and all the tables of money, weights, barometric heights, etc., together with a geographical list and a table of phrases formed with the auxiliary verbs. The second part is an index. It consists of a general vocabulary and a geographical index. The third part gives lists of the United States storm-warning, life-saving, time-signal, and wireless telegraph stations, and of Lloyd´s signal stations of the world. It also contains semaphore and distant signal codes and the United States Army and Navy and Morse Wigwag Codes.
Reprint of the original edition.

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