Displacement Matters: A large ship pushes aside a huge amount of water. The weight of this displaced water creates enough upward force to balance the ship’s weight, keeping it afloat.

The Prairie-Masker noise reduction system isn't one system but two that work in tandem, creating a shield of bubbles around a ...

They’d been told the water was safe, but the Marines reached another conclusion. "The ship is actually trying to kill us," Travis Sellers, a 20-year-old lance corporal, summarized at the time.

Water is a key component of life. While humans can go much longer without food, we can't survive much more than about three days without water. Naval submarine deployments typically last three ...