"A hex-shaped stone object. A picture of a submarine is carved on it."
— Item examination - English
"６角形をした石のオブジェ 潜水艦の絵が刻まれている "
— Item examination - Japanese
The Navy Proof (海軍の証 kaigun no akashi ) is an event item in Resident Evil CODE:Veronica.
Chris will need to get the three back and use them at the Model exhibition room.
The Navy proof can be found near the collapse entrance of the official residence vestibule.
As Chris, it will be at the same location Claire left it before.