Which may indicate the proximity of pack ice?

Which may indicate the proximity of pack ice?

Question 1 of 3104866636ee728f7522a1c518113

Which may indicate the proximity of pack ice?

Question 1 of 31048

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Which may indicate the proximity of pack ice?

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🔍 Key Concepts

• Visual indicators of ice at a distance (especially involving clouds and sky color) • Differences between signs of subsurface changes (like salinity/temperature) vs. visible navigational cues • Traditional navigation terms such as "ice blink" or "water sky"

💭 Think About

• Which option could reasonably be noticed by a lookout using eyes and binoculars, without instruments? • Which of these is most directly used by mariners as an early warning sign of ice beyond the visible horizon? • Consider which signs would be consistent and reliable over time, rather than fluctuating with normal weather or sea variations.

✅ Before You Answer

• Identify which choice describes a visual phenomenon on or above the horizon rather than a measured physical property • Ask whether the indicator can be seen from a distance before you reach the ice itself • Eliminate any options that are more likely to be common environmental variations not specifically linked to pack ice