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 5
... gives the course 370 and 6 tenths or 37 ° 39 ′ , and the distance 221 miles ; and these results are the same by logarithms . But the mean of two opera- tions by inspection gives the course 37 ° 30 ' , and the distance 220.5 , The ...
... gives the course 370 and 6 tenths or 37 ° 39 ′ , and the distance 221 miles ; and these results are the same by logarithms . But the mean of two opera- tions by inspection gives the course 37 ° 30 ' , and the distance 220.5 , The ...
Σελίδα 7
... course , diff . lat . and diff . lon . 8 , to find the distance and diff . of lat . To find by the Diagram the value ... given 47 66 66 Case 2 & 3 , to find the hypothenuse and one leg , the other leg and its opposite angle given Case 4 ...
... course , diff . lat . and diff . lon . 8 , to find the distance and diff . of lat . To find by the Diagram the value ... given 47 66 66 Case 2 & 3 , to find the hypothenuse and one leg , the other leg and its opposite angle given Case 4 ...
Σελίδα 11
... COURSE IN POINTS , the second COURSE IN DEGREES , the third LATITUDE , and ... given . 19. It is therefore very conveniently applicable to the solution of ... given problem . 22. By the description of the diagram it will be.
... COURSE IN POINTS , the second COURSE IN DEGREES , the third LATITUDE , and ... given . 19. It is therefore very conveniently applicable to the solution of ... given problem . 22. By the description of the diagram it will be.
Σελίδα 12
... given a fourth proportional is readily found . Example . - As 220 is to 160 ... COURSE is taken on the ARC in points , or in degrees , counted from left to ... course , is always parallel to the equator . If on any course the distance ...
... given a fourth proportional is readily found . Example . - As 220 is to 160 ... COURSE is taken on the ARC in points , or in degrees , counted from left to ... course , is always parallel to the equator . If on any course the distance ...
Σελίδα 14
... course is affected by the variation of the compass , lee - way , currents ... course or the distance ; nevertheless after making such allowance for errors ... given the other two may be found . 50. The COURSE is the direction in which ...
... course is affected by the variation of the compass , lee - way , currents ... course or the distance ; nevertheless after making such allowance for errors ... given the other two may be found . 50. The COURSE is the direction in which ...
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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