USCG Exam Practice · Tides and currents — predictions and corrections
Slack water is best described as which of the following?
- AThe period of maximum flood current just before the tide begins to ebb
- BThe brief period of zero horizontal flow at the turn of the tidal current✓ correct
- CThe period during neap tides when tidal range is at its minimum
- DThe period of reduced current speed midway between flood and ebb
Why B is correct
Bowditch Ch. 9 §903 defines slack water as the brief period of zero flow at the turn of the tidal current, occurring between flood and ebb phases. It is not defined by tidal range or by a reduction in speed short of zero.
Cited:Bowditch Ch. 9 §903
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