| 1. | The surrounding sea is obstructed by pack ice, even during the summer.
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| 2. | The surrounding sea is obstructed by pack ice even in the summer.
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| 3. | On 1 July they encountered their first pack ice off Har�e Island.
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| 4. | Fill top of cooler with cubed ice or pack ice between items.
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| 5. | Off Haroe Island on 1 July, " Advance " encountered pack ice.
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| 6. | During autum pack ice forms which does not break up until spring.
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| 7. | Nevertheless, most organisms in the winter pack ice are prepared for starvation.
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| 8. | The white pack ice rimmed the horizon like a neon light.
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| 9. | Despite cautious steaming through pack ice, she reached Reykjav�k on 13 February 1943.
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| 10. | After discovering Spitsbergen, the ships encountered pack ice blocking the way.
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