traverse table


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traverse table

[tra′vərs ‚tā·bəl]
(navigation)
A table giving relative values of various parts of plane right triangles, for use in solving such triangles, particularly in connection with various sailings.
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The first step in balancing the latitudes and departures is determining the cosine and sine values for the angle of the bearings and entering them in the traverse table, as shown in Table 9-8.
Recording these values in the traverse table and summing the corrected distance column balances the traverse, as shown in Table 9-11.
Angle Degrees Minutes Seconds Distance (Ft.) AB:N 74 32 20 ABC 103 25 31 598.361 BCD 55 27 11 414.012 CDE 256 14 35 382.86 DEA 54 42 8 271.498 EAB 70 15 37 517.215 Table 9-1 Example of traverse data STA Distance (ft) A:B 262.34 B:C 176.83 C:D 322.47 D:E 168.52 STA Angle ([degrees]) AB:N 106.2 DAB 97.5 ABC 102.2 BCD 77.1 CDA 82.8 Table 9-2 Sum of latitudes and departures +Lat 0.50 -Dep -0.75 -Lat -0.75 -Dep -0.88 -Dep -1.00 +Lat 0.88 +Lat 0.63 +DEP 1.37 SUM 0.0 Table 9-3 Column headings for traverse table Bearing Line N/S Degrees E/W Length Cosine Sine A B Latitudes Departures Line + _ + _ Lat.