NavigationW. & R. Chambers, 1867 - 458 páginas |
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... Exercises ( for Teachers only ) , has been added . Their objects are : 1. To furnish the means of teaching to read rapidly . 2. To interest the pupil in reading . 3. To be easy and thoroughly consistent with progress . INFANT SCHOOL ...
... Exercises ( for Teachers only ) , has been added . Their objects are : 1. To furnish the means of teaching to read rapidly . 2. To interest the pupil in reading . 3. To be easy and thoroughly consistent with progress . INFANT SCHOOL ...
Página iii
... exercises to be solved by the pupil -these exercises being more numerous than those contained in any other treatise now in use . The rules have been given in the most concise form of which they are susceptible , so as not to destroy ...
... exercises to be solved by the pupil -these exercises being more numerous than those contained in any other treatise now in use . The rules have been given in the most concise form of which they are susceptible , so as not to destroy ...
Página iv
... exercises for practice by the pupil . The rules for the various cases of Oblique - angled Plane Trigonometry are then deduced , and followed by illustrative examples and appropriate exercises for practice . After these follow the ...
... exercises for practice by the pupil . The rules for the various cases of Oblique - angled Plane Trigonometry are then deduced , and followed by illustrative examples and appropriate exercises for practice . After these follow the ...
Página v
... exercises may be solved by them , without mastering their demonstration as is generally done in other treatises ; but every navigator will derive a special pleasure from knowing the reason of the operations he performs , and will be ...
... exercises may be solved by them , without mastering their demonstration as is generally done in other treatises ; but every navigator will derive a special pleasure from knowing the reason of the operations he performs , and will be ...
Página vi
... exercises in familiarising them with the many important uses of that volume . The answers to the exercises , which are inserted before the Appendix , have all been carefully checked , and upwards of a hundred have been recalculated ...
... exercises in familiarising them with the many important uses of that volume . The answers to the exercises , which are inserted before the Appendix , have all been carefully checked , and upwards of a hundred have been recalculated ...
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Términos y frases comunes
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
Pasajes populares
Página 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.
Página 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.
Página 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.
Página 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...
Página 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.
Página 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.
Página 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.
Página 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.
Página 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.
Página 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...