The eyes of a submarine
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Advanced Submarine Periscope Camera System
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Up periscope! Thales wins £330m contract to supply submarines | Scotland | The Times
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New US, British Navy Submarines Have New Kind of Periscope
Periscope - Wikipedia
Cassidian to upgrade Colombian submarines with new search periscope - Naval Technology
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New US, British Navy Submarines Have New Kind of Periscope
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File:Attack periscope.png - Wikimedia Commons
USS Pampanito - Periscopes
