chip log

American

noun

Nautical.

a log for measuring the speed of a vessel.

chip log British

noun

nautical a log for determining a vessel's speed, consisting of a wooden chip tossed overboard at the end of a line that is marked off in lengths of 47 feet 3 inches; the speed is calculated by counting the number of such intervals that pass overboard in a 28-second interval

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of chip log

First recorded in 1825–35

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The chip log consists of a reel, line, toggle and chip.

From Lectures in Navigation by Draper, Ernest Gallaudet

The principle of the chip log is that each division of the log line bears the same ratio to a nautical mile that the log glass does to the hour.

From Lectures in Navigation by Draper, Ernest Gallaudet

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023