Which document is referred to as SSIC?

The correct document referred to as SSIC, or Standard Subject Identification Code, is indeed SECNAVINST 5216.5C. This instruction outlines the assignment and use of SSICs, which are essential for codifying and organizing correspondence and records within the Department of the Navy. SSICs help in the systematic classification and retrieval of documents, thus facilitating better management of information.

Understanding this classification system is crucial for anyone working in logistics or administrative roles, as it ensures consistency in the handling of documents across various commands. The other documents listed do serve important purposes within the Navy, such as providing guidance on supply procedures and instruction on maintenance management, but they do not specifically address the organization and assignment of SSICs like SECNAVINST 5216.5C does.

By utilizing this instruction, personnel can ensure they are aligned with the Navy's standards for documentation, which is vital for effective communication and record-keeping.