This quest was marked obsolete by Blizzard and cannot be obtained or completed.
Bring 6 Salvaged Strongboxes to Renn McGill in Dustwallow Marsh.
Well, I was able to make enough repairs to this gear to let you dive for awhile, anyway. I wouldn't count on it holding out for a long time, though.
The wreckage of the ship is strewn along the bottom from the east coast of this island out toward Alcaz Island. While that helm holds out, locate pieces of the wreckage on the bottom between this island and Alcaz. Use this salvage kit to search the wreckage for pieces of the cargo. Be careful not to venture too close to Alcaz Island. Those hydra are fierce.
Did your search of the wreckage reveal anything about the Defias cargo?
<Renn rifles through the contents of the strongboxes you recovered.>
Good work. Now, let's see if our 'precious cargo' is in here....
You will be able to choose one of these rewards:
You will also receive:
Upon completion of this quest you will gain: