Question 4981Deck General70% to pass
Small floes of rough, hummocky sea ice capable of damaging a vessel _______________.
AI Explanation
The correct answer is D) can usually be detected by radar in a smooth sea at a range of 4 to 6 kilometers.
This is correct because small floes of rough, hummocky sea ice can typically be detected by radar at a range of 4 to 6 kilometers in a smooth sea. The uneven, hummocky surface of the ice reflects radar signals, making it distinguishable from the surrounding smooth sea surface.
The other options are incorrect because: A) the ice floes would be visible during the day, not just at night; B) the ice floes can be distinguished from sea return on the radar display; and C) the ice floes can be detected by radar even if covered in snow.
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