An Universal Dictionary of the Marine / Or, a Copious Explanation of the Technical Terms and Phrases Employed in the Construction, Equipment, Furniture, Machinery, Movements, and Military Operations of a Ship. Illustrated With Variety of Original Designs of Shipping, in Different Situations; Together With Separate Views of Their Masts, Sails, Yards, and Rigging. to Which Is Annexed, a Translation of the French Sea-terms and Phrases, Collected from the Works of Mess. Du Hamel, Aubin, Saverien, &c.

by William Falconer

NAVAL, of or belonging to a ship, or to the royal navy. Hence we say, naval-stores, naval officers, &c.

NAVE-LINE, a sort of small tackle, depending from the head of the main-mast and foremast, and fastened to the middle of the parrel immediately behind the mast, and communicating with the gears. It is used to keep the parrel directly opposite to the yard, and particularly whilst hoisting or lowering, as it would otherwise hang under the yard, and prevent it from being sufficiently braced.

NAVIGATION, (navigation, Fr.) the art of directing the movements of a ship by the action of the wind upon the sails. See the article Sailing.

Navigation is then applied, with equal propriety, to the arrangement of the sails, according to the state of the wind; and to the directing and measuring a ship’s course by the laws of geometry; or it may comprehend both, being then considered as the theory and practice thereof.

Since every sea-officer is presumed to be furnished with books of navigation, in which that science is copiously described, it would be superfluous to enter into a particular detail of it in this place. As it would also be a fruitless task to those who are entirely ignorant of the rules of trigonometry, it appears not to come within the limits of our design: and those who are versed in that science generally understand the principles of navigation already. It suffices to say, that the course of a ship, and the distance she has run thereon, are measured by the angles and sides of a right-angled plain triangle, in which the hypothenuse is converted into the distance; the perpendicular, into the difference of latitude; the base, into the departure from the meridian; the angle, formed by the perpendicular and hypothenuse, into the course; and the opposite angle, contained between the hypothenuse and base, into its complement of the course.

The course of the ship is determined by the compass; and the log-line, or a solar observation, ascertains the distance. Hence the hypothenuse and angles are given, to find the base and perpendicular; a problem well known in trigonometry.

That part of navigation, which regards the piloting or conducting a ship along the sea-coast, can only be acquired by a thorough knowledge of that particular coast, after repeated voyages. The most necessary articles thereof are already described in the article Coasting: it is sufficient to observe, that the bearings and distances from various parts of the shore are generally ascertained in the night, either by light-houses, or by the different depths of the water, and the various sorts of ground at the bottom; as shells of different sizes and colours, sand, gravel, clay, stones, ooze, or shingle. In the day, the ship’s place is known by the appearance of the land, which is set by the compass, whilst the distance is estimated by the master or pilot.

NAVY (from navis, Lat.) implies, in general, any fleet or assembly of ships. It is, however, more particularly understood of the fleet of vessels of war, that belong to a kingdom or state, to be employed either in assaulting and destroying its enemies, or protecting its commerce, and defending its coasts against hostilities or invasion.

The navy of Great-Britain, together with its civil and military departments, is governed by the lord high-admiral, or the lords commissioners for executing this office. It is divided into several classes, or orders, in proportion to the size of the ships, &c. See the article Rate.

If the only objects to be considered in the distribution of the navy, into different rates, were to improve ship-building, and facilitate the operations of the marine, it might appear expedient to multiply the rates, much beyond their present number, which would oblige the shipwrights to study the principles of their art with more diligence and application. But the simplicity of the service in our dock-yards, and the views of œconomy, which ought never to be neglected when they regard important objects, has rendered it convenient to arrange the masts, the yards, the sails, the rigging, and artillery, into six rates; which, besides that of sloops of war, answers all the purposes of the navy. See Dock-Yards.