What is the material composition of a Class A bulkhead?

A Class A bulkhead is classified based on its fire resistance and the materials from which it is constructed. The correct answer, steel, is used for Class A bulkheads due to its superior strength, durability, and fire-resistant properties compared to other materials.

Steel bulkheads are designed to withstand high temperatures and prevent the spread of fire, which is essential in marine environments where fire safety is critical. Their capacity to contain fire helps protect the vessel's integrity, allows for more effective damage control, and enhances the safety of onboard personnel and cargo.

While wood and aluminum can be materials used in vessel construction, they do not meet the stringent fire-resistance requirements that classify a bulkhead as Class A. Fiberglass, although also used in marine applications, falls short in terms of fire containment properties as compared to steel.