The ROV's Manipulator Arm Retrieves a Mariner's Astrolabe

The ROV's manipulator arm retrieves a rare bronze mariner's astrolabe, one of three recovered from the 1622 "Tortugas" shipwreck site. Less than a hundred similar navigational devices have been recovered worldwide. The forerunner of the sextant, the mariner's astrolabe was used by early sailors as a navigational device to estimate latitude.