Description and Use of a Diagram of Navigation: By which All Problems in Plane, Traverse, Parallel, Middle Latitude and Mercator's Sailing May be Instantly and Accurately Resolved. Adapted to the Capacity of All who Know the Use of Figures. Designed as an Easy Introduction, by Sensible Demonstration, to the Principles, and the Practice of Navigation. With a Diagram EngravedFellowes & Simpson, 1822 - 4 σελίδες |
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Σελίδα 9
By which All Problems in Plane, Traverse, Parallel, Middle Latitude ... vessel from one place to another . 1 2. That part of Navigation called Nautical Astron- omy comprehends observations of the heavenly bodies , by suitable instruments , ...
By which All Problems in Plane, Traverse, Parallel, Middle Latitude ... vessel from one place to another . 1 2. That part of Navigation called Nautical Astron- omy comprehends observations of the heavenly bodies , by suitable instruments , ...
Σελίδα 13
... ship's reckoning is kept in latitude and in lon- gitude ; and its object is to ascertain from it , at all times , the place of the ship on the ocean . 42. The elements of the reckoning are the course steered , and the distance sailed ...
... ship's reckoning is kept in latitude and in lon- gitude ; and its object is to ascertain from it , at all times , the place of the ship on the ocean . 42. The elements of the reckoning are the course steered , and the distance sailed ...
Σελίδα 14
... Latitude , and the Departure ; any two of which being given the other two may be found . 50. The COURSE is the direction in which the ship ' sails toward the horizon . It is ascertained by the compass , and is reckoned in points , and ...
... Latitude , and the Departure ; any two of which being given the other two may be found . 50. The COURSE is the direction in which the ship ' sails toward the horizon . It is ascertained by the compass , and is reckoned in points , and ...
Σελίδα 15
... LATITUDE is the north , or south distance made on a direct course , and is ... latitude will be equal to the distance sailed , and there will be no departure ... ship sail more toward the north , or south , than the east or west , the ...
... LATITUDE is the north , or south distance made on a direct course , and is ... latitude will be equal to the distance sailed , and there will be no departure ... ship sail more toward the north , or south , than the east or west , the ...
Σελίδα 16
... latitude , and the line to the equator 135 for departure . Example - A ship sails S. 30 deg . W. 164 miles- required the difference of latitude and departure . Here the index set on the course 30 deg . ( counted from the meridian ) 164 ...
... latitude , and the line to the equator 135 for departure . Example - A ship sails S. 30 deg . W. 164 miles- required the difference of latitude and departure . Here the index set on the course 30 deg . ( counted from the meridian ) 164 ...
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arc of latitude arc or angle chord circle circumference co-sine co-tangent contiguous angle course 3 points course 3 pts course 38 deg COURSE and DEPARTURE Course and Diff course and distance course sailed curve line departure 84 Diagram of Navigation difference of lati difference of latitude difference of longitude direct course dist DISTANCE and DEPARTURE distance sailed ence of longitude Example Example.-A ship sails find the COURSE find the DISTANCE give the course give the diff give the distance Given both LATITUDES Given-one LATITUDE index remaining index set index to meet meet the difference Mercator's sailing merid meridian distance meridional difference middle lat parallel sailing plane sailing proper diff radius be equal required the course right line drawn right-angled plane triangle Rule Rule.-Set the index secant Set the index ship in lat side as radius side marked equator tance tangent traverse table tude