The United States and China are developing their submarine forces from completely different starting positions. The U.S. Navy ...

Ever since they started sailing the world's waterways in the 17th century, submarines have evolved significantly in the years since. Subs are some of the most important naval vessels in any blue water ...

China has rapidly built up its submarine fleet by making a technological U-turn to produce boats the U.S. hasn’t built in more than 65 years. More than half of the estimated 66 submarines operated by ...

JS Sogei, the sixth Taigei-class submarine, entered the water in a ceremony held at KHI’s shipyard in Kobe City, Japan, Oct. 14, 2025. The Taigei class are Japan’s newest diesel-electric submarines.