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Bos'n

Boatswain
Bosun2.jpg
The boatswain aboard a modern merchant ship stands cargo watch as freight is lowered into an open hatch.
General
Other names Bosun
Petty Officer
Chief rate
Department Deck department
Licensed No
Requirements Typically, able seaman certificate
Watchstanding
Watch (at sea) On smaller vessels (varies)
Watch (in port) On smaller vessels (varies)

A boatswain (/ˈbsən/ BOH-sən, formerly and dialectally also /ˈbtswn/ BOHT-swayn), bo's'n, bos'n, or bosun, also known as a Petty Officer or a qualified member of the deck department, is the seniormost rate of the deck department and is responsible for the components of a ship's hull. The boatswain supervises the other members of the ship's deck department, and typically is not a watchstander, except on vessels with small crews. Additional duties vary depending upon ship, crew, and circumstances.

The word boatswain has been in the English language since approximately 1450. It is derived from late Old English batswegen, from bat (boat) concatenated with Old Norse sveinn (), meaning a young man, apprentice, a follower, retainer or servant. Directly translated to modern Norwegian it would be båtsvenn, while the actual crew title in Norwegian is båtsmann ("boats-man"). While the phonetic spelling bosun is reported as having been observed since 1868, this latter spelling was used in Shakespeare's The Tempest written in 1611, and as Bos'n in later editions.


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