William Henry Smyth (1788-1865) was a distinguished British admiral and hydrographer who contributed significantly to nautical lexicon and maritime knowledge through his compendious work, 'The Sailor's Word-Book: An Alphabetical Digest of Nautical Terms' (1867). Born to a loyalist American family that had moved to England following the American War of Independence, Smyth's naval career was marked by his scientific inclinations. His experiences at sea provided him the requisite expertise to compose a work that both served practical needs and reflected the rich linguistic heritage of sailors. Smyth was not only proficient in his naval duties but also engaged in scholarly activities, becoming a member of numerous scientific societies, including the Royal Society. 'The Sailor's Word-Book' is an essential reference for nautical enthusiasts and historians alike, capturing the jargon of the 19th century's seafaring world in an alphabetical format. This lexical trove showcases Smyth's dedication to the preservation of naval jargon and his meticulous approach to the classification of the terminology. His literary style, which combines technical precision with an accessible presentation, ensures that the book remains an indispensable resource for understanding historical maritime culture.