taffrail log

English

Noun

taffrail log (plural taffrail logs)

(nautical) A mechanical device dragged from the stern of the vessel that indicates the vessel's speed through the water; usually consists of a propeller, a reading unit and a stiff line connecting them.

Synonyms

patent log

Translations

nautical speed measuring device

Finnish: laahusloki, patenttiloki

Russian: вертушечный лаг (vertušečnyj lag), гакабортный буксируемый лаг (gakabortnyj buksirujemyj lag)

See also

chip log

This article is issued from Wiktionary. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.