It is usual to heave the log once every hour in ships of war and East-India men; and in all other vessels, once in two hours; and if at any time of the watch, the wind has increased or abated in the intervals, so as to affect the ship’s velocity, the officer generally makes a suitable allowance for it, at the close of the watch.
LOG-BOARD, a sort of table, divided into several columns, containing the hours of the day and night, the direction of the winds, the course of the ship, and all the material occurrences that happen during the twenty-four hours, or from noon to noon; together with the latitude by observation. From this table the different officers of the ship are furnished with materials to compile their journals, wherein they likewise insert whatever may have been omitted; or reject what may appear superfluous in the log-board. See the article Journal.
Log-Book, a book into which the contents of the log-board is daily copied at noon, together with every circumstance deserving notice, that may happen to the ship, or within her cognizance, either at sea or in a harbour, &c. The intermediate divisions or watches of the log-book, containing four hours each, are usually signed by the commanding officer thereof, in ships of war or East-Indiamen.
LONG-BOAT, chaloupe, the largest and strongest boat belonging to any ship. It is principally employed to carry great burthens, as anchors, cables, ballast, &c. See the article Boat.
LOOF, the after-part of a ship’s bow; or that part of her side forward where the planks begin to be incurvated into an arch, as they approach the stem.
LOOK-OUT, découverte, a watchful attention to some important object, or event, which is expected to arise from the present situation of a ship, &c. It is principally used in navigation, when there is a probability of danger from the real or supposed proximity of land, rocks, enemies, and, in short, whatever peril she may encounter, through inattention, which might otherwise have been avoided by a prudent and necessary vigilance.
There is always a look-out kept on a ship’s forecastle at sea, to watch for any dangerous objects lying near her track, and to which she makes a gradual approach as she advances: the mate of the watch accordingly calls often from the quarter-deck, “Look out afore there!” to the persons appointed to this service.
LOOMING, an indistinct appearance of any distant object, as the sea-coast, ships, mountains, &c. as, “she looms large afore the wind; the looming of the land is high above the water,” &c.
LOOP-HOLES, meurtrieres, certain small apertures, formed in the bulk-heads and other parts of a merchant-ship, through which the small arms are fired on an enemy who boards her.
To LOOSE, deferler, to unfurl or call loose any sail, in order to be set, or dried, after rainy weather.