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 ii
... Centre , - 24 ° 41 ′ 15 ′′ N. 81 ° 05 ′ 52 " W. I have been furnished by Dr. Bache , superintendant of the United States Coast Survey , with the position of the New South Shoal , as surveyed by Lieut . Charles H. Davis : " The bearing ...
... Centre , - 24 ° 41 ′ 15 ′′ N. 81 ° 05 ′ 52 " W. I have been furnished by Dr. Bache , superintendant of the United States Coast Survey , with the position of the New South Shoal , as surveyed by Lieut . Charles H. Davis : " The bearing ...
Σελίδα 4
... CENTRE , and the line described by the other point is called the CIRCUMFERENCE . VI . The RADIUS of a circle , or SEMI - DIAMETER , is a right line drawn from the centre to the circumference , as AC ; or it is that line which is taken ...
... CENTRE , and the line described by the other point is called the CIRCUMFERENCE . VI . The RADIUS of a circle , or SEMI - DIAMETER , is a right line drawn from the centre to the circumference , as AC ; or it is that line which is taken ...
Σελίδα 5
... centre of the circle being the angular point , and the whole circumference considered as equal to 360 ° . Thus the angle A is measured by the arc BC described round the point A as a centre , and the angle is said to be of as many ...
... centre of the circle being the angular point , and the whole circumference considered as equal to 360 ° . Thus the angle A is measured by the arc BC described round the point A as a centre , and the angle is said to be of as many ...
Σελίδα 6
... centre through the other end of the arc ; thus AT is the tangent of the arc AS . XXIII . The COTANGENT of an arc is the tangent of the complement of that arc to a quadrant ; thus HG is the tangent of the arc HS , or the cotangent of the ...
... centre through the other end of the arc ; thus AT is the tangent of the arc AS . XXIII . The COTANGENT of an arc is the tangent of the complement of that arc to a quadrant ; thus HG is the tangent of the arc HS , or the cotangent of the ...
Σελίδα 9
... centre , standing upon the same arc . Thus the angle BAD is half the angle BCD , standing upon the same arc , BD , of the circle BEDA whose centre is Č . To demonstrate this , draw through A and the centre C , the right line ACE ; then ...
... centre , standing upon the same arc . Thus the angle BAD is half the angle BCD , standing upon the same arc , BD , of the circle BEDA whose centre is Č . To demonstrate this , draw through A and the centre C , the right line ACE ; then ...
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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.