Which afloat supply division is focused on hazardous materials handling?

The S-9 division is specifically designated for hazardous materials handling in an afloat supply context. This division's primary responsibility encompasses the management, storage, and inventory of hazardous materials, ensuring compliance with safety regulations and guidelines. Handling such materials requires specialized knowledge and training due to the potential risks associated with their use, including environmental hazards and health risks to personnel. The S-9 division plays a crucial role in maintaining safety standards and ensuring that hazardous materials are properly stored and disposed of.

In contrast, other supply divisions have different focuses; for example, S-4 typically deals with general supply and logistics support, S-7 is involved with ship's retail and canteen services, and S-2 generally focuses on food service and galley operations. Each division has its distinct role, and the specificity of S-9 to hazardous materials makes it the correct choice for this question.