Pugsley's Dead Reckoning, Including the Various Methods of Finding Course and Distance by Mercator and Middle Latitude Sailings: And Examination SpecialtyR.M. Pugsley, 1916 - 176페이지 |
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15 페이지
... ship's compass . It includes variation and deviation , heeling error , current and leeway , if any . Magnetic course ... has sailed . Departure course is the bearing reversed of the fixed object on shore from which a ship takes her ...
... ship's compass . It includes variation and deviation , heeling error , current and leeway , if any . Magnetic course ... has sailed . Departure course is the bearing reversed of the fixed object on shore from which a ship takes her ...
34 페이지
... ship has sailed south . Add together the latitude of the point left and that of the ship . Then divide by 2 , which will give the middle latitude , the nearest degree of which is 37 ° . With 37 ° enter Table 2 and find the departure 216 ...
... ship has sailed south . Add together the latitude of the point left and that of the ship . Then divide by 2 , which will give the middle latitude , the nearest degree of which is 37 ° . With 37 ° enter Table 2 and find the departure 216 ...
36 페이지
... ship has sailed south . Enter Table 2 with the course S. 56 ° W. and the difference of latitude 169'.2 in the ... ship . Then divide by 2 , which will give the middle latitude , the nearest degree of which is 36 ° . With 36 ° enter Table ...
... ship has sailed south . Enter Table 2 with the course S. 56 ° W. and the difference of latitude 169'.2 in the ... ship . Then divide by 2 , which will give the middle latitude , the nearest degree of which is 36 ° . With 36 ° enter Table ...
37 페이지
... ship has sailed south . Enter Table 2 with the distance 392'.0 and the difference of latitude 66'.8 S. and find them ... ship . Then divide by 2 , which will give the middle latitude , the nearest degree of which is 562 ° . With the ...
... ship has sailed south . Enter Table 2 with the distance 392'.0 and the difference of latitude 66'.8 S. and find them ... ship . Then divide by 2 , which will give the middle latitude , the nearest degree of which is 562 ° . With the ...
38 페이지
... ship has sailed west and in doing so has increased the longitude . EXAMPLE NUMBER 7 One latitude , one longitude , distance and departure to find the course , latitude and longitude in : A ship was sailed 428'.0 to the southward and ...
... ship has sailed west and in doing so has increased the longitude . EXAMPLE NUMBER 7 One latitude , one longitude , distance and departure to find the course , latitude and longitude in : A ship was sailed 428'.0 to the southward and ...
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add the logarithm Barnegat light Cape Horn chief mate coastwise steam vessels compass course corresponding number course and distance COURSE NUMBER DEAD RECKONING deck department difference of latitude difference of longitude Dist distance column Enter Table EXAMPLE NUMBER EXPLANATION Find Find the course Find the difference gives the logarithm latitude 35 latitude 55 latitude and departure latitude and longitude latitude and takes latitude by subtracting latitude column logarithm cosine logarithm secant logarithm tangent Long longitude 74 mate of ocean Mercator sailing meridional difference Middle lat middle latitude sailing mile and find miles and name name it south navigation nearest mile ocean or coastwise ocean steam vessels original license pilot point in latitude point left Prop proper difference PUGSLEY'S sail vessels Sandy Hook ship 38 ship has sailed signals subtract the logarithm subtracting the latitude Table 3 take take the meridional tang third mate traverse table white light