Source: Popular Mechanics
By Kyle Mizokami
The sub design was discovered by open source intelligence Twitter account Intellipus and published online by researcher and author H.I. Sutton, author of the Covert Shores submarine blog and World Submarines: Covert Shores Recognition Guide. A mockup of the design was featured in a 2000 magazine article written by Rear Admiral Malcolm Fages. At time of publication Adm. Fages was the U.S. Navy’s director of the Submarine Warfare Division.
The proposed submarine is a radical break from previous U.S. submarine designs, which mostly resemble cylinders with rounded ends, a large sail, and a propulsion system at the stern. The design—let’s call it “Sub 2000”—was much flatter and organic in appearance. The sail was much shorter and blended into the length of the hull, which had a flattened bottom. Unlike the current t-shaped tail fins of U.S. Navy subs, Sub 2000 had an “x” shape not unlike Japan’s Soryu-class diesel electric attack submarines.
Read more at: https://www.popularmechanics.com/military/navy-ships/a21728744/us-navy-attack-submarine-prototype-200/