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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13 페이지
... leeway , if any . Leeway is the angle between the ship's keel and the direc- tion being made through the water . Variation is the quantity the north point of the compass is east or west of the true north . It is the earth's effect on ...
... leeway , if any . Leeway is the angle between the ship's keel and the direc- tion being made through the water . Variation is the quantity the north point of the compass is east or west of the true north . It is the earth's effect on ...
17 페이지
... Leeway Var . Dev . Ans . True Course I S. E. by E. S. by W. I pt . 15 ° 30 ' E. O 24 00 ' W. S. 81 ° 37 ' E. 2 S. W. by W. S. by E. pt . 9 00 W. 27 ° 00 ' E. S. 79 52 W. 3 N. N. W. W. N. E. pt . 6 00 E. I 30 E. N. 29 04 W. W. N. N. by W ...
... Leeway Var . Dev . Ans . True Course I S. E. by E. S. by W. I pt . 15 ° 30 ' E. O 24 00 ' W. S. 81 ° 37 ' E. 2 S. W. by W. S. by E. pt . 9 00 W. 27 ° 00 ' E. S. 79 52 W. 3 N. N. W. W. N. E. pt . 6 00 E. I 30 E. N. 29 04 W. W. N. N. by W ...
18 페이지
... Leeway ( wind S. by W. ) 66 Com . Co. cor . for leeway S. 6 1⁄2 66 E. S. 61⁄2 pts . E. = in degs . S. 73 ° 07 ′ E. Var . - 15 ° 30 ' E. Com . err . + 8 30 W. Dev . 24 00 W. True Co. S. 81 37 E. Com . èrr . 8 30 W. COURSE NUMBER 2 Com ...
... Leeway ( wind S. by W. ) 66 Com . Co. cor . for leeway S. 6 1⁄2 66 E. S. 61⁄2 pts . E. = in degs . S. 73 ° 07 ′ E. Var . - 15 ° 30 ' E. Com . err . + 8 30 W. Dev . 24 00 W. True Co. S. 81 37 E. Com . èrr . 8 30 W. COURSE NUMBER 2 Com ...
19 페이지
... Leeway ( wind N. N. E. ) + I 66 N. 8 pts . E. Com . err . True Co. Com . Co. cor . for leeway in degs . N. 90 ° E. East Var . N. 8 66 E. 19 ° 00 ' E. 0 Dev . - 19 00 W. East Com . err . 0 00 COURSE NUMBER 6 Com . Co. N. 1⁄2 W. = N. o 1 ...
... Leeway ( wind N. N. E. ) + I 66 N. 8 pts . E. Com . err . True Co. Com . Co. cor . for leeway in degs . N. 90 ° E. East Var . N. 8 66 E. 19 ° 00 ' E. 0 Dev . - 19 00 W. East Com . err . 0 00 COURSE NUMBER 6 Com . Co. N. 1⁄2 W. = N. o 1 ...
20 페이지
... Leeway ( wind N. N. E. ) 66 14 Com . Co. cor . for leeway S. 7 2 66 E. S. 72 pts . E. in degs . S. Com . err . 84 ° 22 ′ E. Var . 26 ° 30 ' W. + 48 00 W. Dev . +21 30 W. S. 132 22 E. Com . err . 48 00 W. 180 True Co. = N . 47 38 E ...
... Leeway ( wind N. N. E. ) 66 14 Com . Co. cor . for leeway S. 7 2 66 E. S. 72 pts . E. in degs . S. Com . err . 84 ° 22 ′ E. Var . 26 ° 30 ' W. + 48 00 W. Dev . +21 30 W. S. 132 22 E. Com . err . 48 00 W. 180 True Co. = N . 47 38 E ...
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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