Navigation DictionaryU.S. Government Printing Office, 1969 - 292 páginas |
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Navigation Dictionary, Volúmenes220-969 United States. Naval Oceanographic Office Vista completa - 1969 |
Navigation Dictionary, Volúmenes220-969 United States. Naval Oceanographic Office Vista completa - 1969 |
Términos y frases comunes
aid to navigation aircraft altitude angle angular distance atmosphere axis azimuth beacon beam bearing British terminology buoy called celestial body celestial equator celestial pole celestial sphere chart circle cloud coast coordinates correction craft datum dead reckoning device direction drift earth electronic equal equinox error fictitious finder FLASHING LIGHT frequency Geodetic glacier Greenwich Greenwich meridian grid gyro height high water horizontal hour angle iceberg indicator instrument interval land latitude line of position longitude Loran low water magnetic compass marine marker mean measured megahertz ment moon motion nautical oblique observation ocean opposite parallel plan position indicator plane polar pole pressure projection pulse radar radio direction finder radio waves range reference refraction relative rhumb rhumb line sextant ship signal sound speed spheroid star station surface temperature tidal current tide tion transverse tropic tude U.S. Naval usually vernal equinox vertical vessel wind zone
Pasajes populares
Página 96 - In obeying and construing these Rules due regard shall be had to all dangers of navigation and collision, and to any special circumstances which may render a departure from the above Rules necessary in order to avoid immediate danger.
Página 66 - Diaphones produce sound by means of a slotted reciprocating piston actuated by compressed air. Blasts may consist of two tones of different pitch in which case the first part of the blast is high and the last of a low pitch. These alternate pitch signals are called "two-tone.
Página 11 - That point at which they are closest together is called periastron. aperiodic [16] approximate absolute temperature scale aperiodic. Without a period; not cyclic; completely damped. aperture. 1. An opening; particularly, that opening in the front of a camera through which light rays pass when a picture is taken. 2. The diameter of the objective of a telescope or other optical instrument, usually expressed in inches, but sometimes as the angle between lines from the principal focus to opposite ends...
Página 164 - Every body continues in a state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by a force impressed upon it.
Página 11 - CONSTELLATIONS (Continued) continuum constituent day. The duration of one rotation of the earth on its axis, with respect to an astre fictif, a fictitious star representing one of the periodic elements in the tidal forces.
Página 36 - Ceiling" means the height above the earth's surface of the lowest layer of clouds or obscuring phenomena that is reported as "broken", "overcast", or "obscuration", and not classified as "thin
Página 259 - In nautical and aeronautical navigation, the term magnetic variation is used instead of magnetic declination and the angle is termed variation of the compass or magnetic variation. Magnetic declination is not otherwise synonymous with magnetic variation which refers to regular or irregular change with...
Página 223 - second" was long defined as 1/86400 of the time required for an average complete rotation of the earth on its axis with respect to the sun. This, with daily corrections from zenith transits of a star, is the basis for a universal time scale (UT).
Página 129 - Each planet revolves so that the line joining it to the sun sweeps over equal areas in equal intervals of time. 3. The squares of the periods of any two planets are in the same proportion as the cubes of their mean distances from the sun.
Página 11 - Angular distance north or south of the prime vertical; the arc of the horizon, or the angle at the zenith between the prime vertical and a vertical circle, measured north or south from the prime vertical to the vertical circle. The term is customarily used only with reference to bodies whose centers are on the celestial horizon, and is prefixed E...