NavigationW. & R. Chambers, 1867 - 458페이지 |
도서 본문에서
29개의 결과 중 1 - 5개
37 페이지
... marked ML , which is joined to a line of chords ; and shews how many miles of easting or westing correspond to a degree of longitude in every latitude . * These several lines * As it would confuse the figure ( page 35 ) to describe on ...
... marked ML , which is joined to a line of chords ; and shews how many miles of easting or westing correspond to a degree of longitude in every latitude . * These several lines * As it would confuse the figure ( page 35 ) to describe on ...
38 페이지
... marked S. R. , corresponding to the logarithms of the natural sines of every point of the mariner's compass , numbered from the left hand towards the right , with 1 , 2 , 3 , 4 , 5 , 6 , 7 , to 8 , where is a brass pin . This line is ...
... marked S. R. , corresponding to the logarithms of the natural sines of every point of the mariner's compass , numbered from the left hand towards the right , with 1 , 2 , 3 , 4 , 5 , 6 , 7 , to 8 , where is a brass pin . This line is ...
40 페이지
... marks 7 and 8 , and this will be the point representing 1728 . 87. If the point representing 435 were required ; from the 4 in the second interval count towards 5 on the right , three of the larger divisions and one of the smaller ...
... marks 7 and 8 , and this will be the point representing 1728 . 87. If the point representing 435 were required ; from the 4 in the second interval count towards 5 on the right , three of the larger divisions and one of the smaller ...
41 페이지
... from 1 to 7 ; that extent will reach from 36 to 25.2 , the solid content . In like manner may the contents of bales , & c . be found , which divided by 40 will give the tonnage . 94. The line of sines , marked Sin . , Gunter's Scale . 41 .
... from 1 to 7 ; that extent will reach from 36 to 25.2 , the solid content . In like manner may the contents of bales , & c . be found , which divided by 40 will give the tonnage . 94. The line of sines , marked Sin . , Gunter's Scale . 41 .
42 페이지
... marked V.S. , corresponding to the log . versed sines of the degrees of the quadrant , begins at the right hand against 90 ° on the sines , and from thence is numbered towards the left hand thus : 10 , 20 , 30 , 40 , & c . , end- ing at ...
... marked V.S. , corresponding to the log . versed sines of the degrees of the quadrant , begins at the right hand against 90 ° on the sines , and from thence is numbered towards the left hand thus : 10 , 20 , 30 , 40 , & c . , end- ing at ...
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자주 나오는 단어 및 구문
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
인기 인용구
395 페이지 - 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.
395 페이지 - 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.
394 페이지 - 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.
391 페이지 - ... 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...
392 페이지 - ... 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.
392 페이지 - ... so constructed as to show a clear, uniform, and unbroken light visible all around the horizon at a distance of at least one mile.
392 페이지 - 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.
393 페이지 - 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.
393 페이지 - 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.
393 페이지 - 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...