Manual of navigation, Volum 71James Maclehose, 1880 - 112 sider |
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Side 17
... needle makes with the magnetic meridian . 45. The Error of the Compass is the angle the compass needle makes with the true meridian . 46. True Course is the angle a ship's track makes with the true meridian . 47. Magnetic Course is the ...
... needle makes with the magnetic meridian . 45. The Error of the Compass is the angle the compass needle makes with the true meridian . 46. True Course is the angle a ship's track makes with the true meridian . 47. Magnetic Course is the ...
Side 18
... needle as shown on the Chart of the Curves of Equal Magnetic Variation , published by order of the Admiralty . Now , as poles of contrary names attract , and of similar names . repel one another , it follows that the north magnetic pole ...
... needle as shown on the Chart of the Curves of Equal Magnetic Variation , published by order of the Admiralty . Now , as poles of contrary names attract , and of similar names . repel one another , it follows that the north magnetic pole ...
Side 19
... needle ; thus , the red end of the needle travels from east to west with the sun , from sunrise till nearly 2 P.M. , from which time till about 10 P.M. it gradually recovers itself . The mean of these diurnal variations throughout the ...
... needle ; thus , the red end of the needle travels from east to west with the sun , from sunrise till nearly 2 P.M. , from which time till about 10 P.M. it gradually recovers itself . The mean of these diurnal variations throughout the ...
Side 20
... needles must be fixed parallel to one another under the card at a distance of from 50 to 60 degrees apart , that is , the extremities of each needle should be from 25 to 30 degrees from the north and south points . of the card ...
... needles must be fixed parallel to one another under the card at a distance of from 50 to 60 degrees apart , that is , the extremities of each needle should be from 25 to 30 degrees from the north and south points . of the card ...
Side 21
... needles with their card and other fittings , is proportionally greater than the increase of magnetic force gained , and is consequently accompanied by longer and slower oscillations ; in other words , the smaller needles have the ...
... needles with their card and other fittings , is proportionally greater than the increase of magnetic force gained , and is consequently accompanied by longer and slower oscillations ; in other words , the smaller needles have the ...
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.