Treasure Grabber

The Treasure Grabber is a unique ship customization item acquired by talking to the Sea Treasure Hunter for the first time, that allows the player to hook up Sea Treasure Caches hidden underneath the beams of light scattered across the seas.

If lost, another grabber can be picked up from the Sea Treasure Hunter. This can also be used to gather multiple Grabbers for the same ship.

Source

 * Sea Treasure Hunter