. A new treatise on the practice of navigation at sea : containing all the details necessary to enable the mariner to become a good practical navigator. . d their sum exceeds 180°, subtract from 360 willfire their difference of Longitude. EXAMPLE 5. Find the difference of Longitude between New Yorkand )£anilla. New York, Longitude 74° 1 W. Manilla 121 2 B Sum EXAMPLE 1. Find the difference of Longitude between New Yorkand CbailestoD, S. C. New York, Longitude 14 0 W. Charle«ton 79 64 W. Difference of 6* 64. EXAMPLE 2. Find tk« differenee of Longitude between the Cap« of)ood Hope
. A new treatise on the practice of navigation at sea : containing all the details necessary to enable the mariner to become a good practical navigator. . d their sum exceeds 180°, subtract from 360 willfire their difference of Longitude. EXAMPLE 5. Find the difference of Longitude between New Yorkand )£anilla. New York, Longitude 74° 1 W. Manilla 121 2 B Sum EXAMPLE 1. Find the difference of Longitude between New Yorkand CbailestoD, S. C. New York, Longitude 14 0 W. Charle«ton 79 64 W. Difference of 6* 64. EXAMPLE 2. Find tk« differenee of Longitude between the Cap« of)ood Hope and Cape St Roque. Cape of Good Hope, Longitude 18* 30 E. Oape St Roque 86 17 W. Difference of Longitude, 63* 47. EXAMPLE 8. A Ship sails from Longitude 60* 10 W. to 60° 80*W, find the difference of Longitude. Longitude left 60* 10 W. Longitude in .60 30 W. Difference of 10* 20. EXAMPLE 4. A Ship sails from Longitude 6° 40 W. to 2* 10 Rfind her difference of Longitude. Longitude left 6* 40* W. Longitude in 210 £. Difference of .7* 60. 195 3. Subtract ftom 360 0. Difference of 164° 57 Fig. NoTB.—A Ship in East Longitude sailing East, or in West Longkuda sailing We8t, increases her Longitude, b-n irBut Longitude sailing West, or in West Longitude sailin^r Eastj she her longitude ; and when the Loniride exoeedg 180, subtract it from 860, will give the Longitude m of a contrary name. EXAMPLE 7. EXAMPLE 6. A Ship from Longitude 85* 26 W. sails East 8* 40,fad the Longitade in. Longitude left 86 26 W. Difference of Longitude 8 40 in 81* 46 W. A Ship from Longitude 179 32 E. sails East 2°find the Longitude in. Longitude left 179 32 K. Difference of 2 30 B. Sum sy. 182° Subtract from 360 20 Longitude in 177° 68 W, DEFINITIONS Or PLANE SAILINGFic. 4. DIAGRAM OF THE RIGHT-ANGLED TRIANGLE. -^ 1 1 1 TcvralZel -f £. •■^ , 1 .A(pr> r^t )^ /h^y/i i/& if t ^/ t/c .r m • \\i/ 1 COMf i
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnavigat, bookyear1902
