PLPLOT.doc

Position Line Plotting

1.              Time 1436: EP latitude 42º15'N longitude 150º40'E

                   Intercept 1'.4 Towards, Azimuth 215ºT

                   Course 292ºT, Run 65.0 miles

                   Time 1806: Intercept 4'.0 Away, Azimuth 102ºT                 

Using EP run up, find the vessel's position at the time of the second observation.

2.              Time 0615: EP latitude 33º15'N longitude 60º15'W

                   Intercept 3'.0 Towards, Azimuth 262ºT

                   Course 220ºT, Run 57.0 miles

                   Time 1000: Intercept 0'.8 Towards, Azimuth 124ºT

Using EP run up, find the vessel's position at the time of the second observation.

3.              Time 1500: EP latitude 2710'S longitude 17912'W

                   Observed longitude 179 13'W, Azimuth 276T

                   Course 228T, Run 48.0 miles

                   Time 1830: Intercept 5'0 Towards, Azimuth 053T

Using EP latitude and observed longitude run up, find the vessel's position at the time of the second observation.

4.              Time 0745: EP latitude 25º20'N longitude 115º10'W

                  Observed longitude 115º07'W, Azimuth 105ºT

                   Course 260ºT, Run 69.0 miles

                   Time 1210: Observed latitude 24º56'N

Using EP latitude and observed longitude run up, find the vessel's position at the time of the second observation.

5.              EP latitude 40º12'S longitude 19º26'E

                   Observed longitude 19º30'E, Azimuth 079ºT

                   Course 350ºT, Run 3.5 hours at 16.0 knots, current 262ºT at 2.0 knots

                   Time 1830: Intercept 2'0 Towards, Azimuth 012ºT

Using EP latitude and observed longitude run up, find the vessel's position at the time of the second observation.

ANSWERS

     1.   42º40'.3N               149º13'.2E

     2.   32º26'.6N   61º01'.4W

     3.   27º34'.8N               179º52'.5W

     4.   24º56'N              116º25'.5W

     5.   39º16'.4N   19º08'E

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