Online Encyclopedia

Search over 40,000 articles from the original, classic Encyclopedia Britannica, 11th Edition.

MAST (I) (O. Eng. maest; a common Teu...

Online Encyclopedia
Originally appearing in Volume V17, Page 871 of the 1911 Encyclopedia Britannica.
Spread the word: del.icio.us del.icio.us it!

See also:

MAST (I) (O. Eng. maest; a See also:common See also:Teutonic word, cognate with See also:Lat. See also:malus; from the See also:medieval latinized See also:form mast us comes Fr. See also:malt)  , in nautical See also:language, the name of the spar, or straight piece of See also:timber, or See also:combination of spars, on which are hung the yards and sails of a See also:vessel of any See also:size . It has been ingeniously supposed that See also:man himself was the first See also:mast . He discovered by See also:standing up in his prehistoric " dugout," or See also:canoe, that the See also:wind blowing on him would carry his See also:craft along . But the origin of the mast, like that of the See also:ship, is lost in times anterior to all See also:record . The earliest See also:form of mast which prevailed till the See also:close of the See also:middle ages, and is still in use for small vessels, was and is a single spar made of some tough and elastic See also:wood; the conifers See also:supply the best timber for the purpose . In sketching the See also:history of the development of the mast, we must distinguish between the increase in the number erected, and the improvements made in the mast itself . The earliest See also:ships had only one, carrying a single See also:sail . So little is known of the See also:rigging of classical ships that nothing can be affirmed of them with See also:absolute confidence . The Norse vessels carried one mast placed in the middle . The number gradually increased till it reached four or five . All were at first upright, but the mast which stood nearest the See also:bow was by degrees lowered forward till it became the bow-sprit of See also:modern times, and lost the name of mast . The next from the bows became the foremast—called in Mediterranean See also:sea language mizzana, in See also:French misaine .

Then came the See also:

main-mast—in French See also:grand See also:mat; and then the mizen—in French, which follows the Mediterranean usage, the artimon, i.e . " next the See also:rudder," See also:timon . A small mast was sometimes erected in the very end of the ship, and called in See also:English a " bonaventure mizen." It had a close resemblance to the jigger of See also:yawl-rigged yachts . By the close of the 16th See also:century it had become the established See also:rule that a ship proper had three masts—fore, main and mizen . The third takes its name not as the other two do, from its See also:place, but from the See also:lateen sail originally hoisted on it (see RIGGING), which was placed fore and aft in the middle (See also:Italian, mizzo) of the ship, and did not See also:lie across like the courses and topsails . With the development of very large sailing clippers in the middle of the 19th century a return was made to the practice of carrying more than three masts . Ships and barques are built with four or five . Some of the large schooners employed in the See also:American See also:coast See also:trade have six or seven, and some steamers have had as many . The mast was for See also:long made out of a single spar . Thence the Mediterranean name of " palo " (spar) and the See also:Spanish " arbol " (See also:tree) . The typical Mediterranean mast of " lateen " (Latin) vessels is See also:short and bends forward . In other classes it is upright, or bends slightly backwards with what is called a " See also:rake.' The mast is grounded, or in technical language " stepped," on the kelson (or keelson), the solid timber or See also:metal See also:beam lying parallel with, and above the See also:keel .

As the 15th century advanced the growth of the ship made it difficult, or even impossible, to find spars large enough to make a mast . The practice of dividing it into See also:

lower, and upper or topmast, was introduced . At first the two were fastened firmly, and the topmast could not be lowered . In the 16th century the See also:top-mast became movable . No date can be given for the See also:change, which was See also:gradual, and was not simultaneously adopted . When the masting of sailing ships was fully See also:developed, the See also:division was into lower or standing mast, topmast, topgallant mast, and topgallant royal . The topgallant royal is a small spar which is often a continuation of the topgallant mast, and is fixed . Increase of size also made it impossible to construct each of these subdivisions out of single timbers . A distinction was made between " whole " or single-spar masts and " armed " and " made masts." The first were used for the lighter spars, for small vessels and the Mediterranean craft called polacras." Armed masts were composed of two single timbers . Made masts were built of many pieces, bolted and " coaked," i.e. dovetailed and fitted together, fastened See also:round by See also:iron hoops, and between them by twelve or thirteen close turns of rope, firmly secured . " Made masts " are stronger than those made of a single tree and less liable to be sprung . The See also:general principle of construction is that it is built round a central See also:shaft, called in English the " spindle " or " upper tree," and in French the mkche or See also:wick .

The other pieces—" See also:

side trees," " keel pieces," " side fishes," " cant pieces " and " fillings " are " coaked," i.e. dovetailed and bolted on to and around the " spindle," which itself is made of two pieces, coaked and bolted . The whole is See also:bound by iron bands, and between the bands, by rope firmly " woulded " or turned round, and nailed tight . The See also:art of constructing made masts, like that of See also:building wooden ships, is in See also:process of dying out . In sailing men-of-See also:war the mizen-mast often did not reach to the kelson, but was stepped on the orlop See also:deck . Hollow metal cylinders are now used as masts . In the See also:case of a masted See also:screw steamer the masts abaft the engines could not be stepped on the kelson because they would interfere with the shaft of the screw . It is therefore necessary to step them on the lower deck, where they are supported by stanchions, or on a horseshoe covering the screw shaft . The size of masts naturally varies very much . In a 110-See also:gun ship of 2164 tons the proportions of the mainmast were: for the lower mast, length 117 ft., See also:diameter 3 ft . 3 in.; topmast, 70 ft., and 201 in.; topgallant mast, 35 ft., and 11 ii in., 222 ft. in all . At the other end of the See also:scale, a cutter of 200 tons had a lower mast of 88 ft., of 22 in. diameter, and a topgallant mast (there was no topmast between them) of 44 ft., of 94 in. in diameter, 132 ft. in all; topgallant mast of 44 ft., and 91 in. in diameter . The masts of a warship were more lofty than those of a See also:merchant ship of the same See also:tonnage .

At See also:

present masts are only used by warships for signalling and military purposes . In sailing merchant ships, the masts are more lofty than they were about a century ago . A merchant ship of 1300 tons, in 183o, had a main-mast 179 ft. in height; a vessel of the same size would have a mast of 198 ft, to-See also:day.871 A " See also:jury mast " is a temporary mast put up by the See also:crew when the spars have been carried away in a See also:storm or in See also:action, or have been cut away to relieve pressure in a storm . The word has been supposed without any See also:foundation to be short for " injury " mast; it may be a See also:mere fanciful sailor See also:adaptation of " jury " in some connexion now lost . See also:Skeat suggests that it is short for O . Fr. ajourie, See also:Lat. adjutare, to aid . There is no See also:reason to connect with jour, day . See L . Jai, Glossaire Nautique (See also:Paris, 1848) ; See also:Sir See also:Henry Manwayring, The See also:Seaman's See also:Dictionary (See also:London, 1644) ; N . See also:Hutchinson, See also:Treatise on See also:Naval See also:Architecture and See also:Practical See also:Seamanship (See also:Liverpool, 1777) ; See also:David See also:Steel, Elements and Practice of Rigging, Seamanship and Naval See also:Tactics (London, 1800) ; See also:William See also:Burney's See also:Falconer's Dictionary (London, 183o) ; Sir See also:Gervais See also:Nares's Seamanship (Ports-mouth, 1882) ; and See also:John Fincham, On Masting Ships and Mast Making (London, 1829) . (D .

End of Article: MAST (I) (O. Eng. maest; a common Teutonic word, cognate with Lat. malus; from the medieval latinized form mast us comes Fr. malt)
[back]
MAST (2) (Anglo-Saxon maest, food, common to some T...
[next]
MASTABA (Arab. for " bench ")

Additional information and Comments

There are no comments yet for this article.
» Add information or comments to this article.
Please link directly to this article:
Highlight the code below, right click and select "copy." Paste it into a website, email, or other HTML document.