What correction should be applied to the...

Question 1 / 2066636eea28f7522a1c51afa4

Question 1 of 2066636eea28f7522a1c51afa4

What correction should be applied to the charted depths of the Poquoson River at York Point at the PM low water on 18 December 1983?

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Question 1 of 20

66636eea28f7522a1c51afa4

What correction should be applied to the charted depths of the Poquoson River at York Point at the PM low water on 18 December 1983?

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🔍 Key Concepts

• Tidal datum used for charted depths (usually Mean Lower Low Water – MLLW) • How to use a tide table for a specific date, place, and time of low water • Whether the water level at that time is above or below the chart datum, and how that affects correction (add vs subtract)

💭 Think About

• Identify what vertical datum the charted depths are referenced to, then compare that datum to the predicted height of the PM low water on 18 December 1983 • Determine if the predicted low water height means there will be more or less water than the charted depth, and whether that means a positive or negative correction • Estimate which of the choices best matches the difference between the chart datum and the predicted PM low water height for Poquoson River at York Point

✅ Before You Answer

• Verify the tide station used (Poquoson River at York Point) and that you’re reading the PM low water for 18 December 1983 • Confirm whether charted soundings are based on Mean Lower Low Water (MLLW) and how to apply a tide height to those soundings • Double-check the sign of the correction: if the actual tide height is above the datum, the correction to the charted depth is usually positive (more water); if below, it is negative (less water)

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Question 1 of 20

What correction should be applied to the charted depths of the Poquoson River at York Point at the PM low water on 18 December 1983?

-0.1 feet

No correction is necessary

+1.9 feet

-0.4 feet

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Question 1 / 2066636eea28f7522a1c51afa4

Question 1 of 2066636eea28f7522a1c51afa4

What correction should be applied to the charted depths of the Poquoson River at York Point at the PM low water on 18 December 1983?

Back

Question 1 of 20

66636eea28f7522a1c51afa4

What correction should be applied to the charted depths of the Poquoson River at York Point at the PM low water on 18 December 1983?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

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