NavigationW. & R. Chambers, 1867 - 458 sider |
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Side xi
... horizon . ' " Art . 289 , line 7 , for ' become , ' read ' trace out , when their planes are produced . ' 220 , Art . 295 , line 2 , for ' a solar or an apparent day , ' read ' an apparent solar day . ' 221 , Art . 298 , for the first ...
... horizon . ' " Art . 289 , line 7 , for ' become , ' read ' trace out , when their planes are produced . ' 220 , Art . 295 , line 2 , for ' a solar or an apparent day , ' read ' an apparent solar day . ' 221 , Art . 298 , for the first ...
Side 67
... HORIZON , which separates the visible from the invisible parts of the celestial sphere . This horizon is , properly speaking , called the sensible horizon ; the TRUE or RATIONAL HORIZON is traced out by a plane passing through the ...
... HORIZON , which separates the visible from the invisible parts of the celestial sphere . This horizon is , properly speaking , called the sensible horizon ; the TRUE or RATIONAL HORIZON is traced out by a plane passing through the ...
Side 68
... horizon , it is said to set . 146. If through the centre of the earth there be drawn a line perpendicular to the plane of the horizon , and produced on both sides to the heavens , it will there mark out the two poles of the horizon ...
... horizon , it is said to set . 146. If through the centre of the earth there be drawn a line perpendicular to the plane of the horizon , and produced on both sides to the heavens , it will there mark out the two poles of the horizon ...
Side 73
... horizon ; and AD the sensible horizon as seen by an eye elevated above the earth's surface . CHAPTER IV . INSTRUMENTS USED IN NAVIGATION . THE LOG Of Astronomy and Geography . 73.
... horizon ; and AD the sensible horizon as seen by an eye elevated above the earth's surface . CHAPTER IV . INSTRUMENTS USED IN NAVIGATION . THE LOG Of Astronomy and Geography . 73.
Side 81
... horizon ; one of these vanes has a long and narrow slit , and in the other there is an opening of the same kind , but wider , with a wire up and down the middle of it , exactly opposite the slit . VARIATION OF THE MAGNETIC NEEDLE . 169 ...
... horizon ; one of these vanes has a long and narrow slit , and in the other there is an opening of the same kind , but wider , with a wire up and down the middle of it , exactly opposite the slit . VARIATION OF THE MAGNETIC NEEDLE . 169 ...
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Vanlige uttrykk og setninger
anchor apparent altitude barometer called Cape Cape Clear centre chords chronometer column common logarithms corrected cosec course and distance course steered decimal departure dept difference of latitude difference of longitude dist distance sailed divided equation Example extent will reach find the course given GUNTER'S SCALE hence horizon hypotenuse index error latitude and longitude latitude arrived leeway line of numbers logarithms mast middle latitude miles moon's multiplied Nautical Almanac observed altitude October 20 parallax parallel Parallel Sailing perpendicular place of observation plane Plane Sailing points polar distance port tack quantities quotient radius required the course required the latitude required the true right ascension rope secant semidiameter sextant ship from latitude ship sails ship's side slider starboard tack subtract sun's declination tangent true altitude true course true distance variation vessel wind
Populære avsnitt
Side 395 - 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 395 - In obeying and construing these rules due regard must be had to all dangers of navigation ; and due regard must also be had to any special circumstances which may exist in any particular case rendering a departure from the above rules necessary in order to avoid immediate danger.
Side 394 - Every steamship, when approaching another ship so as to involve risk of collision, shall slacken her speed, or if necessary stop and reverse ; and every steamship shall, when in a fog, go at a moderate speed.
Side 391 - ... abaft the beam on the starboard side, and of such a character as to be visible at a distance of at least 2 miles. (c.) On the...
Side 392 - ... use : and shall, on the approach of or to other vessels, be exhibited on their respective sides in sufficient time to prevent collision, in such manner as to make them most visible, and so that the green light shall not be seen on the port side nor the red light on the starboard side, nor, if practicable, more than two points abaft the beam on their respective sides.
Side 392 - ... so constructed as to show a clear, uniform, and unbroken light visible all around the horizon at a distance of at least one mile.
Side 392 - The said green and red side lights shall be fitted with inboard screens projecting at least three feet forward from the light, so as to prevent these lights from being seen across the bow.
Side 393 - Sailing pilot vessels shall not carry the lights required for other sailing vessels, but shall carry a white light at the masthead, visible all round the horizon, and shall also exhibit a flareup light every fifteen minutes.
Side 393 - When two steam vessels are meeting end on, or nearly end on, so as to involve risk of collision, each shall alter her course to starboard so that each may pass on the port side of the other.
Side 393 - Whenever there is a fog, whether by day or night, the fog signals described below shall be carried and used, and shall be sounded at least every five minutes, viz. : (a...