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patent log
(redirected from patent logs)

   Also found in: Encyclopedia 0.01 sec.
patent log
n. Nautical
A torpedo-shaped instrument with rotary fins that is dragged from the stern of a vessel to measure the speed or distance traveled. Also called screw log, taffrail log.

patent log
n
(Transport / Nautical Terms) Nautical any of several mechanical devices for measuring the speed of a vessel and the distance travelled, consisting typically of a trailing rotor that registers its rotations on a meter Compare chip log
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.patent log - a cigar-shaped log with rotary fins that measure the ship's speedpatent log - a cigar-shaped log with rotary fins that measure the ship's speed
log - measuring instrument that consists of a float that trails from a ship by a knotted line in order to measure the ship's speed through the water


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