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- Q135 - Navigation Problems: Oceans
321. On 29 April your 0530 zone time position was LAT 23° 04.0' S, LONG 162° 12.0' E. Your vessel was steaming on course 120° T at a speed of 9.0 knots. An observation of the Sun's upper limb was made at 0830 ZT. The chronometer read 09h 27m 32s and was slow 02m 24s. The observed altitude (Ho) was 24° 58.0'. LAN occurred at 1205 zone time. The observed altitude (Ho) was 52° 04.0'. What was the longitude of your 1200 zone time running fix?
The running fix at 1200 zone time is located at LONG 163 06.0' E. This result is obtained by advancing the 0830 Sun line of position and retarding the LAN meridian line to 1200, and their intersection is slightly west of the 1200 DR longitude.
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