(a) Nautical a logbook used to record a ship's course and speed for use in dead reckoning (now historical); cf. sense 16; (b) Surveying a book used…

A sea-log (see sea, n. compounds 6a). Obsolete.

A daily record of events or occurrences kept for private or official use. Nautical. A daily register of the ship's course, the distance traversed…

Nautical. A book in which the particulars of a ship's voyage (including her rate of progress as indicated by the log) are entered daily from the…

a book in which the record of events during the voyage of a ship are first entered roughly, to be written up later in the main logbook.

Short for logbook, n. A journal into which the contents of the log-board or log-slate are daily transcribed, together with any other circumstance…

an official record of a ship's voyage (see also quot. 1867 sea-cap n.).