Water or Blood
Have a guild license over salvage, Their are rumors of wrecking and piracy efforts the the guilds tries to squash. They do have a large legitimate business that scavenges the ocean and coast professionally. They are known to pay for information regarding any lost ship or sunken treasure. They have special contracts with the Librarians that neither of them is talking about.
They are based out of Geth and often irritate the Shipwrights guild. Some claim they encourage dangerous routes and sailing practices and some even say they are deliberately involved in some level of sabotage.