The New American Practical Navigator; Being an Epitome of Navigation; Containing All the Tables Necessary to be Used with the Nauticl AlmanacE. & G.W. Blunt, 1846 - 451 páginas |
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Página v
... variation of the equation of time . Table VII . contains the amplitudes of the sun for various latitudes and ... variations , adapted to the beginning of the year 1830. This table was abridged from that published by the astronomer royal ...
... variation of the equation of time . Table VII . contains the amplitudes of the sun for various latitudes and ... variations , adapted to the beginning of the year 1830. This table was abridged from that published by the astronomer royal ...
Página vii
... variation of the time of the moon's passing the meridian . Table XXIX . contains the correction of the moon's altitude for parallax and refraction , corresponding to the parallax 57 ' 30 " . Tables XXX . and XXXI . are tables of ...
... variation of the time of the moon's passing the meridian . Table XXIX . contains the correction of the moon's altitude for parallax and refraction , corresponding to the parallax 57 ' 30 " . Tables XXX . and XXXI . are tables of ...
Página viii
... variation of the mean refraction ( given in Table XII . ) for various temperatures and densities of the air . The correction given in this table is nearly the same as that deduced from Dr. Bradley's rule , which is as follows : As the ...
... variation of the mean refraction ( given in Table XII . ) for various temperatures and densities of the air . The correction given in this table is nearly the same as that deduced from Dr. Bradley's rule , which is as follows : As the ...
Página ix
... variation of the altitude of any heavenly body , arising from a change of 100 seconds in the declination . Table XLVII . contains the proportional logarithms as in Table XXII .. increasing the argument at the bottom of the table by 5 ...
... variation of the altitude of any heavenly body , arising from a change of 100 seconds in the declination . Table XLVII . contains the proportional logarithms as in Table XXII .. increasing the argument at the bottom of the table by 5 ...
Página x
... Variation of the compass in different parts of the world , deduced from Barlow's chart . Table LIV . contains the latitudes and longitudes of the most remarkable ports , harbors , & c . in the world , from the latest and best ...
... Variation of the compass in different parts of the world , deduced from Barlow's chart . Table LIV . contains the latitudes and longitudes of the most remarkable ports , harbors , & c . in the world , from the latest and best ...
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The New American Practical Navigator; Being an Epitome of Navigation ... Nathaniel Bowditch Sin vista previa disponible - 2015 |
Términos y frases comunes
anchor apparent altitude azimuth bearing cable calculation central index centre chord chronometer circle column compass Corr correct central altitude corresponding Cosec cosine degrees diameter diff difference of latitude difference of longitude Dist divided draw elapsed equal equator error EXAMPLE feet given Greenwich Half-sum horizon glass horizontal parallax hour angle hypotenuse instrument latitude and departure line of numbers line of sines logarithm lower limb mast mean meridian altitude method middle latitude miles minutes moon moon's multiplied Nautical Almanac nearly noon object observed altitude obtained parallel Parallel Sailing passing the meridian perpendicular Plane Sailing points polar distance pole quadrant radius 90 refraction right ascension rule screw sea account secant semidiameter sextant ship ship's side star subtracted sun's declination Suppose taken tangent telescope triangle true altitude true distance true longitude variation wind wires zenith distance
Pasajes populares
Página 9 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Página 299 - Calm Light air Light breeze Gentle breeze Moderate breeze Fresh breeze Strong breeze Moderate gale Fresh gale Strong gale Whole gale Storm Estimatin Observations at sea Sea like mirror.
Página 156 - ... or taking their difference when of contrary names ; the altitude to be reckoned from the south point of the horizon, when the latitude is north, and the contrary when south ; but when the sum exceeds 90°, it is to be taken from 180°...
Página 10 - In like manner, when it is said, that " triangles on the same base, and between the same parallels, are equal...
Página 102 - If the vessel be double-decked, take the length thereof from the fore part of the main stem, to the after part of the stern post, above the upper deck ; the breadth thereof at the broadest part above the main wales...
Página 29 - To find the logarithm of a vulgar fraction. RULE. Subtract the logarithm of the denominator from the logarithm of the numerator...
Página 6 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc.
Página 119 - Fiini will be the time of high water, at the given place, reckoning from the noon of the given day. If this sum be greater than 12h.
Página 290 - Davit ; a long beam of timber, used as a crane, whereby to hoist the flukes of the anchor to the top of the bow, without injuring the planks of the ship's sides as it ascends.
Página 11 - KCML, the sum of the two parallelograms or square BCMH ; therefore the sum of the squares on AB and AC is equal to the square on BC.