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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8 페이지
... found in Table 42 . The index is one less than the number of figures to the left of the decimal point . index is 3 . 4563 . 456.3 66 66 2 . 45.63 66 66 .65925 4.563 66 I. 0 . To take a logarithm from Table 42 , find the first three ...
... found in Table 42 . The index is one less than the number of figures to the left of the decimal point . index is 3 . 4563 . 456.3 66 66 2 . 45.63 66 66 .65925 4.563 66 I. 0 . To take a logarithm from Table 42 , find the first three ...
11 페이지
... find the sec- onds in the left - hand mile column . The correction will be found opposite in the column of differences next to that from which the loragithm is taken and is added or subtracted , accord- ing to the next logarithm being ...
... find the sec- onds in the left - hand mile column . The correction will be found opposite in the column of differences next to that from which the loragithm is taken and is added or subtracted , accord- ing to the next logarithm being ...
12 페이지
... Find the logarithm cosine for 54 ° 27 ′ 40 ′′ . 54 ° 27 ' 40 " 54 ° 27 ′ 40 ′′ COS . 9.76448 cor . 12 = COS . 9.76436 7. Example : Find ... course is that course steered by the ship's 14.
... Find the logarithm cosine for 54 ° 27 ′ 40 ′′ . 54 ° 27 ' 40 " 54 ° 27 ′ 40 ′′ COS . 9.76448 cor . 12 = COS . 9.76436 7. Example : Find ... course is that course steered by the ship's 14.
16 페이지
... course W. by S. Compass course W. by S. Ans . , dev . 22 ° 00 ′ E. Example ... find the deviation for S. 1⁄2 W. , take deviations from the table for S. and ... course S. 1⁄2 E. In this case the deviations for S. and S. by E. are of dif ...
... course W. by S. Compass course W. by S. Ans . , dev . 22 ° 00 ′ E. Example ... find the deviation for S. 1⁄2 W. , take deviations from the table for S. and ... course S. 1⁄2 E. In this case the deviations for S. and S. by E. are of dif ...
29 페이지
... found , enter Table 2. If the difference of the latitude is greater than the departure , it shows that the course made or wanted is nearer to north or south than to east or west and the course is less than 45 ° , which must be found at ...
... found , enter Table 2. If the difference of the latitude is greater than the departure , it shows that the course made or wanted is nearer to north or south than to east or west and the course is less than 45 ° , which must be found at ...
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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