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CHEMCO Exit Exam • Set 8 Question 20 of 30

Snow has obliterated surface features and the sky is covered with uniform, altostratus clouds. There are no shadows and the horizon has disappeared. What is this condition called?

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Direct Answer

Option B: Whiteout

Whiteout conditions occur when snow cover and uniform cloud layers eliminate shadows and obscure the horizon. This creates a disorienting environment where depth perception is lost, making navigation extremely hazardous, as detailed in arctic navigation guides.

All Options

A
Ice blink
B
Whiteout (Correct Answer)
C
Water sky
D
Aurora reflection

Detailed Explanation & Context

Whiteout conditions occur when snow cover and uniform cloud layers eliminate shadows and obscure the horizon. This creates a disorienting environment where depth perception is lost, making navigation extremely hazardous, as detailed in arctic navigation guides.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).

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