Thank you to everybody who has made this article possible.

During the Cold War the USS Halibut was modified for 'Underwater Engineering', a euphemism for covert intelligence gathering operations. Because her missions were kept Top Secret, photo or illustrations of her modifications are virtually non-existent. In particular, the configuration below the waterline. Hopefully this changes that!

Original artwork - CLICK for HIGH-RESOLUTION image.

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Main article -> USS Halibut

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