The New American Practical Navigator: Being an Epitome of Navigation : Containing All the Tables Necessary to be Used with the Nautical Almanac, in Determining the Latitutde, and the Longitude by Lunar Observations : and Keeping a Complete Reckoning at Sea : the Whole Exemplified in a Journal, Kept from Boston to Madeira : with an Appendix Containg Methods of Calculating Ex\clipses of the Sun and Moon, and Occultations of the Fixed StarsE. M. blunt, 1826 - 617 sider |
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Side 25
... distance 85 miles- required the difference of Latitude and Departure ? By Case 1st of Plane Sailing , we have these canons : Radius ( 8 points ) : Distance ( 85 ) :: Sine . Co. Course ( 7 points ) : Diff . Lat .; and Radius ( 8 points ) : ...
... distance 85 miles- required the difference of Latitude and Departure ? By Case 1st of Plane Sailing , we have these canons : Radius ( 8 points ) : Distance ( 85 ) :: Sine . Co. Course ( 7 points ) : Diff . Lat .; and Radius ( 8 points ) : ...
Side 50
... latitude sailed from and come to . DEPARTURE is the east or west distance a ship has made from the meri- dian , or the whole easting or westing made by the ship . If a ship sails due north or south , she sails on a meridian , makes no ...
... latitude sailed from and come to . DEPARTURE is the east or west distance a ship has made from the meri- dian , or the whole easting or westing made by the ship . If a ship sails due north or south , she sails on a meridian , makes no ...
Side 62
... lat . 1 47 = 107 miles . Let C represent Mount - Desert Rock , draw the meridian CF , which make equal to 107 miles the difference of latitude between the two places ; and perpendicular thereto the line FE equal to the departure 84 ...
... lat . 1 47 = 107 miles . Let C represent Mount - Desert Rock , draw the meridian CF , which make equal to 107 miles the difference of latitude between the two places ; and perpendicular thereto the line FE equal to the departure 84 ...
Side 53
... Departure Distance Diff . of Lat . Case Given . Required . Solutions . Course Dif . of Lat . 1 and Distance ... latitude and depar- ture from the meridian . A ship from the latitude of 49 ° 57 ' N. sails S. W. by W. 488 miles ; required ...
... Departure Distance Diff . of Lat . Case Given . Required . Solutions . Course Dif . of Lat . 1 and Distance ... latitude and depar- ture from the meridian . A ship from the latitude of 49 ° 57 ' N. sails S. W. by W. 488 miles ; required ...
Side 54
... distance 488 to the departure 405.8 on the line of ⚫ numbers . 2dly . Extend from radius or 8 points to 3 points , the complement of the course , on the line SR ; that extent will reach from the distance 488 to the difference of latitude ...
... distance 488 to the departure 405.8 on the line of ⚫ numbers . 2dly . Extend from radius or 8 points to 3 points , the complement of the course , on the line SR ; that extent will reach from the distance 488 to the difference of latitude ...
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The New American Practical Navigator: Being an Epitome of Navigation ... Nathaniel Bowditch Uten tilgangsbegrensning - 1826 |
Vanlige uttrykk og setninger
anchor angle arch azimuth bearing cable calculated Cape centre co-sec column compass correction corresponding course and distance course sailed degrees Diff difference of latitude difference of longitude Dist draw elapsed equal equator error EXAMPLE feet find the course Funchal given Greenwich half sum haul helm horizon glass hour angle hypotenuse latitude and departure Latitude Sailing line of numbers line of sines logarithm lower limb mast mean meridian altitude method middle latitude miles minutes mizen moon moon's multiplied Nautical Almanac nearly noon object observed altitude parallax parallel Parallel Sailing passing the meridian perpendicular Plane Sailing points radius 90 refraction right ascension rope rule sea account secant semi-diameter sextant ship ship's side Sine Course star staysail subtracted sun's declination Suppose taken tangent telescope tion TRAVERSE TABLE triangle true distance tude variation wind zenith distance
Populære avsnitt
Side 7 - In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference. By Theorem II. we have a : b : : sin. A : sin. B.
Side 22 - To find the logarithm of a vulgar fraction. RULE. Subtract the logarithm of the denominator from the logarithm of the numerator...
Side 177 - 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...
Side xii - The circumference of a circle is supposed to be divided into 360 equal parts called degrees, and each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, &c.
Side 197 - The cause of the tides is the unequal attraction of the sun and moon upon different parts of the earth. For they attract the parts of the earth's surface nearest to them, with a greater force than they do its centre : and attract the centre more than they do the opposite surface. To restore this equilibrium the waters take a spheroidal figure, whose longer axis is directed towards the attracting luminary.
Side 23 - DIVISION BY LOGARITHMS. RULE. From the logarithm of the dividend subtract the logarithm of the divisor ; the remainder will be the logarithm of the quotient EXAMPLE I.
Side xii - A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Side 229 - Broadside; a discharge of all the guns on one side of a ship, both above and below.
Side 196 - ... near the longitude of Sumatra and Java. In the tract between Sumatra and the African coast, and from 3° of south latitude, quite northward to the Asiatic coast, including the Arabian Sea and the Bay of Bengal, the monsoons blow from October to April on the NE and from April to October on the SW In the former half year, the wind is more steady and gentle, and the weather clearer than in the latter six months. In the Red Sea the winds blow nearly nine months of the year from the southward, that...