From the GUPPY III conversions that were cut short by the nuclear revolution to the ultra-quiet diesel-electric Barbel class expansions, we analyze why these ambitious projects were halted. Discover how shifting naval doctrines and the rise of nuclear power rendered traditional blueprints obsolete, leaving behind a “paper fleet” of incredible engineering potential. This documentary collection details the strategic evolution of underwater warfare, covering everything from the high-speed CONVEX studies to the massive Arsenal Submarine concepts of the 1990s. We examine how the US Navy grappled with budget cuts, technological breakthroughs, and the looming threat of the Soviet Navy to decide which hulls would define the silent service. Whether it was the pursuit of low-cost nuclear alternatives or the extreme performance of the original Seawolf design, learn the stories behind the submarines

Source: Never – Built US Submarines We Nearly Got