The New Semaphoric Signal Book In Three Parts: Containing The Marine Telegraph System, With The Appendix, The United States Telegraph Vocabulary, And Embracing The Holyhead Signals. To Which Is Annexed The Boston Harbor Signal Book. The Whole

This technical manual provides a detailed explanation of the marine telegraph system and the semaphore signals used by ships to communicate with one another. It includes a comprehensive lexicon of telegraph vocabulary and appendixes on specific signal books.

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