On 4 October 2023, you will be docking at...

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Question 1 of 20673956e598d45f16831b6d16

On 4 October 2023, you will be docking at the Redwood Marine Terminal in Eureka, CA at the second high tide. The berth is located between NOAA reference tidal station #9418767 and subordinate station #9418801. What time (LST) will you be docking? See illustration D062NG.

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🔍 Key Concepts

• Reference vs subordinate tidal stations and which one you should base your time on when the berth lies between two stations • How to identify the second high tide on 4 October 2023 from the tidal listings shown in the illustration • Whether any time corrections are needed when using a subordinate station prediction that is already given in LST (Local Standard Time)

💭 Think About

• Look at both station tables for 4 October and decide which station’s second high water time would most realistically represent the tide at the Redwood Marine Terminal, given its location between them • Compare the times of high water at the two stations and think about how a location physically between them would likely experience high water timing • Ask yourself if the subordinate station table shown has already had the usual “time differences” applied, or if you still need to adjust it from the reference station

✅ Before You Answer

• Confirm clearly which row in the table corresponds to 4 October 2023 and which entries are the first and second high waters for that date • Verify that the time you choose is expressed in LST as requested in the question (not in UTC or another time zone) • Double‑check that you are actually picking the second high tide, not the first high tide or a low tide close in time

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