121. On 16 June your 0430 zone time DR position is LAT 29° 24.0' S, LONG 36° 16.0' E. At that time, you observe Vega bearing 341.0° psc. The chronometer reads 02h 32m 06s, and the chronometer error is 01m 54s fast. The variation is 20.5° W. What is the deviation?

The deviation is 2.4 W, calculated by subtracting the compass bearing from the true azimuth and accounting for the variation. This process involves determining the true azimuth using the Nautical Almanac, calculating the local hour angle, and applying the variation to find the deviation.