What signatures are needed before authorization of REC?

• A. Rec Sup, Senior Diving Supervisor, Diving Officer
• B. Rec Sup, Senior Diving Supervisor
• C. Senior Diving Supervisor
• D. Rec Sup, Senior Diving Supervisor, Diving Officer

Answer: (D)

The main idea here is that approving REC actions requires a three-person sign-off to ensure medical, technical, and command oversight before proceeding. The Recompression Supervisor is responsible for the medical and operational aspects of recompression or REC procedures, making sure treatment plans and safety steps conform to established guidelines. The Senior Diving Supervisor provides high-level dive safety oversight, confirming that the procedures, equipment, and risk controls are appropriate for the operation. The Diving Officer holds the ultimate command authority for the dive program, giving official authorization and accountability for the operation.

Having all three signatures creates a robust, multi-layered check: medical readiness and treatment alignment from the Rec Supervisor, technical safety and risk management from the Senior Diving Supervisor, and formal approval from the Diving Officer. If any one of these roles is missing, critical oversight is lost—the medical/regulatory aspect, the safety oversight, or the ultimate command decision—so the operation would not be properly authorized.