What is the velocity of the tidal current at...

🔍 Key Concepts

• Tidal current tables and atlas for Pollock Rip Channel on the date in question • How to convert clock time (DST, ZD +4) to the reference time used in the current table (usually standard time or time at the reference port) • The relationship between time before/after slack water or max current and the current’s velocity and direction (flood vs ebb)

💭 Think About

• First, decide whether 1700 DST on 23 July 1983 falls closer to slack water or maximum current for that stage of tide at the east end of Pollock Rip Channel • Determine whether the current at that time should be flooding or ebbing based on the sequence shown in the current table for that location • Use the table or graph to interpolate the current speed at the exact time, not just pick the nearest listed time

✅ Before You Answer

• Verify you are using the correct station (east end of Pollock Rip Channel), not a nearby reference station • Confirm that you correctly converted 1700 DST (ZD +4) to the time used in the current table before reading values • Double-check whether the table indicates flood (+) vs ebb (-) and match that to the choice that has the correct direction and magnitude for that time

What is the velocity of the tidal current at the east end of Pollock Rip Channel at 1700 DST (ZD +4) on 23 July 1983?

0.6 knot ebbing

0.8 knot flooding

1.5 knots flooding

1.9 knots flooding

🔍 Key Concepts

💭 Think About

✅ Before You Answer