What was the name of the first carrier designed from the keel up?

The first aircraft carrier designed from the keel up was the USS Ranger. Launched in 1934 and commissioned in 1934, USS Ranger was specifically built as an aircraft carrier rather than converting an existing ship, which was the practice prior to its construction. This allowed for a design that maximized the carriers' operational capabilities, enabling a larger flight deck and improved hangar facilities compared to her predecessors.

Ranger's design established a template for future carriers, focusing on aspects such as stability, hangar access, and flight operations, which were all critical elements in effective aircraft carrier operations. Understanding this historical context is important as it highlights the evolution of naval warfare and the pivotal role of aircraft carriers in modern naval strategy.