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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108 페이지
... feet long the same size as the log line are rove through the two lower holes and form a bridle . Exactly in the middle of the bridle a toggle is seized and this toggle fits into a socket seized on to the fog line at the same distance ...
... feet long the same size as the log line are rove through the two lower holes and form a bridle . Exactly in the middle of the bridle a toggle is seized and this toggle fits into a socket seized on to the fog line at the same distance ...
109 페이지
... feet and seven and three quarter inches . For a twenty - eight second glass , the length of a knot is forty - seven feet and three and one half inches . For a thirty second glass , the length of a 109.
... feet and seven and three quarter inches . For a twenty - eight second glass , the length of a knot is forty - seven feet and three and one half inches . For a thirty second glass , the length of a 109.
110 페이지
... feet and eight inches nearly . The line is measured and marked when wet and tested by frequent measurement . Put one ... feet ( 6080 ) in a nautical mile , so is the number of seconds ( 14 , 28 or 30 ) in the glass to the number of feet ...
... feet and eight inches nearly . The line is measured and marked when wet and tested by frequent measurement . Put one ... feet ( 6080 ) in a nautical mile , so is the number of seconds ( 14 , 28 or 30 ) in the glass to the number of feet ...
111 페이지
... feet = 23 feet 7 inches nearly . Twenty Eight Second Glass . 6080 28 48640 I 2 1 6 0 3600 ) 1 7 0 2 4 0 ( 4 7.2 9 I 4 4 0 0 26240 25200 I 0 4 0 0 X I 2 5 8 29 = 3.48 31⁄2 inches , nearly . 720 320 3240 400 The length of a knot for a ...
... feet = 23 feet 7 inches nearly . Twenty Eight Second Glass . 6080 28 48640 I 2 1 6 0 3600 ) 1 7 0 2 4 0 ( 4 7.2 9 I 4 4 0 0 26240 25200 I 0 4 0 0 X I 2 5 8 29 = 3.48 31⁄2 inches , nearly . 720 320 3240 400 The length of a knot for a ...
112 페이지
... feet 50 feet 8 inches nearly . This log is hove from the lee quarter and as soon as the red rag is on the taffrail , the glass is turned and the speed of the ship will be the number of knots run over the rail while the sand in the glass ...
... feet 50 feet 8 inches nearly . This log is hove from the lee quarter and as soon as the red rag is on the taffrail , the glass is turned and the speed of the ship will be the number of knots run over the rail while the sand in the glass ...
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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