How big is 1 submarine?

The size of a submarine can vary significantly depending on its type and purpose. For example, a typical military submarine, like a U.S. Navy Virginia-class submarine, is about 377 feet (115 meters) long and can displace over 7,800 tons when submerged. In contrast, smaller research submarines may be around 20-30 feet long, while larger ballistic missile submarines can exceed 500 feet (152 meters). Overall, submarines range from small, personal submersibles to large military vessels.