(1) A ship's speedometer. (2) The act of a ship in making a certain speed, as "The ship logged 20 knots". (3) Book or ledger in which data or events that occurred during a watch is recorded
Compass (The National Training Portal of The U. S. Naval Sea Cadet Corps), appendix I, Glossary, VA, USA 2012. http://compass.seacadets.org/pdf/nrtc/bmr/14325_in d.pdf, (Mrtm/Nav - Amer) {558}