What instruction authorizes foreign military divers to dive using US equipment during an exercise or operation?

• A. SUPSALV
• B. NAVSEA 00C
• C. OPNAVINST. 3150.27 series
• D. US Navy Dive Manual

Answer: (C)

Policy and authority for foreign military divers using US equipment during exercises is provided by OPNAVINST 3150.27 series. This instruction establishes the diving safety framework for international and interagency operations, outlining who can authorize foreign divers, under what conditions, and the safety and training standards that must be met. It covers equipment compatibility, risk management, and oversight to ensure safe, interoperable dives when foreign armed forces are operating with US gear. The other documents don’t specify authorization for foreign divers: SUPSALV deals with salvage and diving safety within US operations, NAVSEA 00C is a naval engineering/publication context, and the US Navy Dive Manual is the procedural guide for US Navy divers only.