hollowhulled

Hollowhulled refers to a specific construction method for boats and ships where the hull is not a solid mass but rather an enclosed structure with internal spaces. This internal space is typically compartmentalized to provide buoyancy and structural integrity. The outer shell of the hull is then connected to an inner shell, creating a void between them. This void can be filled with air or other buoyant materials.

The primary advantage of a hollowhulled design is its inherent buoyancy. If the outer hull is breached, the compartmentalized internal spaces can help keep the vessel afloat, preventing it from sinking rapidly. This was a significant safety improvement over earlier solid-hulled designs. Historically, many early wooden vessels employed this technique to a degree.

Modern hollowhulled vessels, especially smaller ones like kayaks, canoes, and some dinghies, often utilize this construction for lightness and buoyancy. In larger ships, the concept is more complex, involving double hulls or complex internal framing that creates void spaces for ballast, fuel, or cargo, in addition to structural support and buoyancy. The space between the hulls in double-hulled tankers, for instance, is designed to contain potential leaks from the inner hull, preventing pollution. The term can therefore encompass a range of designs, from simple, single-skinned hollow structures to sophisticated double-hulled configurations.