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 σελίδες |
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Σελίδα vi
... altitude This table agrees nearly with that published by Maskelyne . Table XVI . contains the dip for various ... altitude for parallax and refraction . The correction of Table XIX . is equal to the difference between 59 ′ 42 ′′ and the ...
... altitude This table agrees nearly with that published by Maskelyne . Table XVI . contains the dip for various ... altitude for parallax and refraction . The correction of Table XIX . is equal to the difference between 59 ′ 42 ′′ and the ...
Σελίδα xii
... altitude by a fore observation ,. To take the sun's altitude by a back observation Advice to seamen in the choice of a quadrant .... Description and use of a sextant of reflection To adjust a sextant .... To measure the angular distance ...
... altitude by a fore observation ,. To take the sun's altitude by a back observation Advice to seamen in the choice of a quadrant .... Description and use of a sextant of reflection To adjust a sextant .... To measure the angular distance ...
Σελίδα xiii
... altitudes . Fourth method , when the declinations are different ..... Fifth method , to find the latitude from altitudes and distances used in taking a lunar observation ... 179 180 185 189 193 193 197 To find the latitude by one altitude ...
... altitudes . Fourth method , when the declinations are different ..... Fifth method , to find the latitude from altitudes and distances used in taking a lunar observation ... 179 180 185 189 193 193 197 To find the latitude by one altitude ...
Σελίδα xiv
... altitude of a planet XI . Proportional parts .... XII . Refraction of the heavenly bodies .. XIII . Dip of the horizon XIV . Sun's parallax in altitude ....... XV . Augmentation of the moon's semi - diameter XVI . Dip for different ...
... altitude of a planet XI . Proportional parts .... XII . Refraction of the heavenly bodies .. XIII . Dip of the horizon XIV . Sun's parallax in altitude ....... XV . Augmentation of the moon's semi - diameter XVI . Dip for different ...
Σελίδα 130
... altitude observed , if the 0 on the vernier be to the right hand of 0 on the arc , otherwise to be subtracted . Thus , if the horizon is used , the instrument being held in a vertical position , you must look through the lower hole of ...
... altitude observed , if the 0 on the vernier be to the right hand of 0 on the arc , otherwise to be subtracted . Thus , if the horizon is used , the instrument being held in a vertical position , you must look through the lower hole of ...
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The New American Practical Navigator; Being an Epitome of Navigation ... Nathaniel Bowditch Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2015 |
Συχνά εμφανιζόμενοι όροι και φράσεις
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
Δημοφιλή αποσπάσματα
Σελίδα 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.
Σελίδα 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.
Σελίδα 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°...
Σελίδα 10 - In like manner, when it is said, that " triangles on the same base, and between the same parallels, are equal...
Σελίδα 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...
Σελίδα 29 - To find the logarithm of a vulgar fraction. RULE. Subtract the logarithm of the denominator from the logarithm of the numerator...
Σελίδα 6 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc.
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.