| 21. | He believes he has an Iowa-class battleship in his periscope.
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| 22. | Kelsey Grammer stars in " Down Periscope ."
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| 23. | Their plan, which involves a periscope, works in unexpected ways.
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| 24. | He would be low, but his head was like a periscope.
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| 25. | Then the periscope vanished as quickly as it had appeared.
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| 26. | Then, the boat slips gently below periscope depth, 62 feet.
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| 27. | They have not disclosed how high the periscope was raised.
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| 28. | The ship rose to periscope depth of about 60 feet.
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| 29. | It can blind enemy crews looking through ordinary vehicle periscopes.
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| 30. | UP PERISCOPE : Want to see the 32nd Ryder Cup?
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