👉 In physics and engineering, a non-submerged object is an object that does not sink or float below its surface. This means that it remains submerged at all times, even when it is submerged underwater. Non-submersibles are often used in navigation systems, as they allow ships to navigate through the water without floating, which can be dangerous for crew members and equipment. Non-submersibles can be made from various materials such as wood or metal, and may have different sizes and shapes to suit various