What is the primary function of the support-structure aboard an amphibious assault ship?

The primary function of the support structure aboard an amphibious assault ship is to aid in the safe transport and launch of Marine forces. This ship type is designed to support amphibious operations, which involve deploying Marine Corps forces to shore. The support structure includes specialized features such as ramps, well decks for launching landing craft, and facilities that accommodate aircraft. These elements enable the effective loading, storing, and launching of personnel and equipment, ensuring that missions can be executed smoothly and safely. The design and functionality are tailored to provide direct support to Marine operations, making it crucial for the strategic deployment of forces during amphibious assaults.