Manual of navigation, Volum 71James Maclehose, 1880 - 112 sider |
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Side 14
... 24. The Amplitude of a celestial object is the arc of the horizon between the east or west points and the centre of the object when rising or setting . 25. The Declination of a celestial object is the arc 14 MANUAL OF NAVIGATION .
... 24. The Amplitude of a celestial object is the arc of the horizon between the east or west points and the centre of the object when rising or setting . 25. The Declination of a celestial object is the arc 14 MANUAL OF NAVIGATION .
Side 15
Robert Assheton Napier. 25. The Declination of a celestial object is the arc of a celestial meridian between the celestial equator or equi- noctial and the object . The declination is north or south , according as the object is on the ...
Robert Assheton Napier. 25. The Declination of a celestial object is the arc of a celestial meridian between the celestial equator or equi- noctial and the object . The declination is north or south , according as the object is on the ...
Side 18
... declination of the magnetic needle is the angle which the magnetic meridian makes with the true meridian of a place . The Dip or inclination of the needle is the vertical angle which the magnetic needle makes with the plane of the ...
... declination of the magnetic needle is the angle which the magnetic meridian makes with the true meridian of a place . The Dip or inclination of the needle is the vertical angle which the magnetic needle makes with the plane of the ...
Side 37
... declination and along the line of the object's hour angle find its true bearing , or azi- muth , reckoned from the elevated pole , viz . , from north in latitude north , from south in latitude south , and towards east or west ...
... declination and along the line of the object's hour angle find its true bearing , or azi- muth , reckoned from the elevated pole , viz . , from north in latitude north , from south in latitude south , and towards east or west ...
Side 75
... Declination , Latitude , . 17 29 51 S. NOTE . No correction required for Parallax or Semi - diameter . Use column of Right Ascension in Table 63 Raper or 13 Norie as an index to the Declination in the Nautical Almanac . Always subtract ...
... Declination , Latitude , . 17 29 51 S. NOTE . No correction required for Parallax or Semi - diameter . Use column of Right Ascension in Table 63 Raper or 13 Norie as an index to the Declination in the Nautical Almanac . Always subtract ...
Vanlige uttrykk og setninger
angle apparent atmosphere azimuth barometer binnacle blue Blue Ensign boat broken water celestial object centre chart chronometer circle clouds collision column correct magnetic bearing CYCLONES Declination decn degrees deviation Diagram Diff difference of longitude direction distant object earth east or west easterly equal equator fall feet Flinders-bar foretells fine weather glass Greenwich heeling height of eye horizon hour inches knots land latitude life-boats Long LONGITUDE BY CHRONOMETER Magnetic Course magnetic hemisphere mercury meridian meridian altitude miles minutes moon Nautical Almanac needle noon North magnetic pole north or south north point northern hemisphere oars observed altitude parallel parallel sailing placed Polar pole port position rain Right Ascension rise Royal Naval Reserve rule running S.-diar sailing ship sextant ship's head Ships under Steam shore side signals sky foretells wind standard compass starboard steam ship steered stern subtract surf tide True altitude Variation vertical line vessel
Populære avsnitt
Side 88 - ... abaft the beam on the port side ; and of such a character as to be visible on a dark night, with a clear atmosphere, at a distance of at least two miles.
Side 93 - ... other; in other words, to cases in which, by day, each vessel sees the masts of the other in a line, or nearly in a line, with her own; and by night, to cases in which each vessel is in such a position as to see both the side-lights of the other.
Side 92 - When both are running free, with the wind on different sides, the vessel which has the wind on the port side shall keep out of the way of the other.
Side 95 - Nothing in these rules shall exonerate any ship, or the owner, or master, or crew thereof, from the consequences of any neglect to carry lights or signals, or of any neglect to keep a proper look-out, or of the neglect of any precaution which may be required by the ordinary practice of seamen, or by the special circumstances of the case.
Side 98 - A gun or other explosive signal fired at intervals of about a minute. 2. The International Code signal of distress indicated by NC 3.
Side 90 - ... in a globular lantern of not less than eight inches in diameter, and so constructed as to show a clear uniform and unbroken light visible all round the horizon at a distance of at least one mile.
Side 95 - 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.
Side 96 - If he fails so to do, and no reasonable cause for such failure is shown, the collision shall, in the absence of proof to the contrary, be deemed to have been caused by his wrongful act, neglect, or default.
Side 98 - AT NIGHT 1. A gun fired at intervals of about a minute. 2. Flames on the vessel (as from a burning tar barrel, oil barrel, etc.). 3. Rockets or shells, bursting in the air with a loud report and throwing stars of any color or description, fired one at a time at short intervals.
Side 88 - ... from right ahead to two points abaft the beam on the port side, and of such a character as to be visible at a distance of at least two miles.