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- Q154 - Navigation Problems: Oceans
315. What will be the velocity of the tidal current in Bolivar Roads, Texas, at a point 0.5 mile north of Ft. Point, on 23 November 1983 at 0330 CST (ZD +6)?
The NOAA Tidal Current Tables predict slack water at 0330 CST on 23 November 1983 at the specified location, indicating a tidal current velocity of 0 knots. This problem requires using the tables directly, not calculation, and understanding that subordinate stations use time and velocity differences relative to a reference station. The time, 0330 CST (ZD +6), corresponds directly to the local standard time used in the 1983 tables, and a table lookup confirms slack water conditions at that time.
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