
1) Duty period on shipboard 2) Late night shift 3) Lookout time, at sea 4) Night shift 5) Watch
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https://www.crosswordclues.com/clue/dogwatch

a short, evening period of watch duty on a ship
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http://phrontistery.info/d.html

a short, evening period of watch duty on a ship
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http://phrontistery.info/nautical.html

• (n.) A half watch; a watch of two hours, of which there are two, the first dogwatch from 4 to 6 o`clock, p. m., and the second dogwatch from 6 to 8 o`clock, p. m.
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http://thinkexist.com/dictionary/meaning/dogwatch/

(from the article `ship`s bell`) ...hour of a watch. The mariner`s day is divided into six watches, each four hours long, except that the 4:00 to 8:00 watch may be `dogged`; that ...
Found on
http://www.britannica.com/eb/a-z/d/62
Dog'watch` noun (Nautical) A half watch; a watch of two hours, of which there are two, the first
dogwatch from 4 to 6 o'clock, p. m., and the second
dogwatch from 6 to 8 o'clock, p. m.
Totten. Found on
http://www.encyclo.co.uk/webster/D/107

[
n] - either of two short watches: from 4-6 pm or 6-8 pm
Found on
http://www.webdictionary.co.uk/definition.php?query=dogwatch
[Treasure Island] nautical term for either of the two duty periods (from 4 to 6 p.m. and from 6 to 8 p.m.) that are half the length of a normal duty period.
Found on
https://www.cliffsnotes.com/literature/t/treasure-island/study-help/full-gl
noun either of two short watches: from 4-6 pm or 6-8 pm
Found on
https://www.encyclo.co.uk/local/20974

either of two two-hour watches, the first from 4 to 6 p.m., the latter from 6 to 8 p.m. · Also calledthe period, after the regular editions of a newspaper have gone to press, during which staff personnel remain on duty to await any new developments that may warrant an extra issue. · any night shift, esp. the last or latest one.
Found on
https://www.infoplease.com/dictionary/dogwatch
No exact match found.