NAVFAC P-307 Training Practice Test - Study Guide & Practice Exam

The rigger-in-charge should be familiar with the ASME Hand Signal chart for safe operations because it provides a standardized set of hand signals used to communicate effectively with the crane operator during lifting operations. Clear communication is essential to ensure safety and precision when directing movements of the load. The hand signals help to mitigate the risk of misunderstandings that could lead to accidents or injuries on the job site.

While familiarity with the operational manual, crane operator's manual, and safety regulations guide is also important, the specific role of the rigger-in-charge emphasizes the need for effective communication. The ASME Hand Signal chart is a vital tool in achieving this because the rigging crew must relay instructions without the benefit of voice communication, especially in noisy environments or when the operator is not in direct vocal contact. Hence, knowing these signals is critical to maintaining safety during operations.