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Spiral. Helispherical line (Math.). the rhomb line in navigation. [R.]

A tribunal or commission having charge of the revenue derived from trade and navigation. [China] Hoppo men, Chinese customhouse officers.

by neglect, by disuse, or by the claims of another founded on prescription. The right of navigation, fishing, and others that may be exercised on the sea, belonging to the right of mere ability, are imprescriptible. Vattel (Trans. )

seashore boundary; not passing on, or over, the sea; as, inland transportation, commerce, navigation, etc.

Recent; modern. Hath not navigation discovered in these latter ages, whole nations at the bay of Soldania Locke.

of the law merchant relating to the affairs of the sea, such as seamen, ships, shipping, navigation, and the like. Bouvier. -- Mariotte's law. See Boyle's law (above). -- Martial law.See under Martial. -- Military law, a branch of the general municipal law, consisting of rules ordained for the government of the mil…

carrying at the masthead a brilliant light, and moored off a shoal or place of dangerous navigation as a guide for mariners.

's motions, arranged for computing the moon's true place at any time past or future. (b) (Navigation) Tables for correcting an observed lunar distance on account of refraction and parallax. -- Lunar year, the period of twelve lunar months, or 354 days, 8 hours, 48 minutes, and 34.38 seconds.

Of or pertaining to the sea; having to do with the ocean, or with navigation or naval affairs; nautical; as, marine productions or bodies; marine shells; a marine engine.

Of or pertaining to the ocean; marine; pertaining to navigation and naval affairs, or to shipping and commerce by sea. "Maritime service." Sir H. Wotton. Maritime law. See Law. -- Maritime loan, a loan secured by bottomry or respodentia bonds. -- Martime nations, nations having seaports, and using the sea more or les…

Of or pertaining to seamen, to the art of navigation, or to ships; as, nautical skill.

or sails; esp., one who direct the course of a ship, or one who is skillful in the art of navigation; also, a book which teaches the art of navigation; as, Bowditch's Navigator.

Originally, a laborer on canals for internal navigation; hence, a laborer on other public works, as in building railroads, embankments, etc. [Eng.]

To direct the course of, as of a ship, where navigation is dangerous.

A long, flat-bottomed canoe, used for the navigation of rivers and lagoons in Central America. Squier.

es, etc. (such as is formed in some Western rivers of the United States), which obstructs navigation. [U.S.]

The art of managing a vessel; seamanship; navigation; as, globular sailing; oblique sailing.

Navigation. "God send 'em good shipping." Shak. Shipping articles, articles of agreement between the captain of a vessel and the seamen on board, in respect to the amount of wages, length of time for which they are shipping, etc. Bouvier. -- To take shipping, to embark; to take ship. [Obs.] John vi.24. Shak.…

ater is at rest; or the interval between the flux and reflux of the tide. -- Slack-water navigation, navigation in a stream the depth of which has been increased, and the current diminished, by a dam or dams.

An instrument for facilitating the practical use of spherics in navigation and astronomy, being constructed of two cardboards containing various circles, and turning upon each other in such a manner that any possible spherical triangle may be readily found, and the measures of the parts read off by inspection.…