When applying a dip correction to the...

Question 1 / 2066636ee928f7522a1c519159

Question 1 of 2066636ee928f7522a1c519159

When applying a dip correction to the sighted sextant angle (hs), you always subtract the dip because you are correcting __________.

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Question 1 of 20

66636ee928f7522a1c519159

When applying a dip correction to the sighted sextant angle (hs), you always subtract the dip because you are correcting __________.

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🔍 Key Concepts

• Dip correction is related to your height of eye above the sea surface • Difference between visible horizon, sensible horizon, and celestial (true) horizon • What hs (sextant altitude) and Ho (observed altitude) each represent in sight reduction

💭 Think About

• Ask yourself: From where are you actually observing – at sea level or some height above it – and how does that affect where you see the horizon? • Think about whether dip is moving your measured altitude toward an ideal, geometrical horizon or toward what you actually see from the bridge wing. • Consider at what step in the sight reduction process dip is applied: directly to hs, or later when forming Ho?

✅ Before You Answer

• Verify which horizon is defined by a plane through the observer’s eye parallel to the celestial horizon. • Confirm that dip is always a negative correction and comes from height of eye above the sea, not from instrument error. • Check whether Ho already includes dip, index error, and other corrections, or if dip is applied before Ho is computed.

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Question 1 of 20

When applying a dip correction to the sighted sextant angle (hs), you always subtract the dip because you are correcting __________.

hs to the visible horizon

hs to the celestial horizon

hs to the sensible horizon

Ho to the celestial horizon

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Question 1 / 2066636ee928f7522a1c519159

Question 1 of 2066636ee928f7522a1c519159

When applying a dip correction to the sighted sextant angle (hs), you always subtract the dip because you are correcting __________.

Back

Question 1 of 20

66636ee928f7522a1c519159

When applying a dip correction to the sighted sextant angle (hs), you always subtract the dip because you are correcting __________.

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

— No credit card needed