What is Salvor?

Legal Definition
Mar. law. When a ship and cargo, or any part thereof, are saved at sea by the exertions of any person from impending perils, or are recovered after an actual abandonment or loss, such persons are denominated salvors; they are entitled to a compensation for their services, which is called salvage. (q. v.)

2. As soon as they take possession of property for the purpose of preserving it, as if they find a ship derelict at sea, or if they recapture it, or if they go on board a ship in distress, and take possession with the assent of the master or other person in possession, they are deemed bona fide possessors, and their possession cannot be lawfully displaced. 1 Dodson's Rep. 414. They have a lien on the property for their salvage, which the, laws of all maritime countries will respect and enforce. Salvors are responsible not only for good faith, but for reasonable diligence in their custody of the salvage property. Story, Bail. ยง623.
-- Bouviers Law Dictionary
Legal Definition
A person who, without any particular relation to a ship in distress, proffers useful service, and gives it as a volunteer adventurer, without any pre-existing covenant that connected him with the duty of employing himself for the preservation of that ship. The Clara, 23 Wall. 16, 23 L. Ed. 150; The Dumper, 129 Fed. 99, 63 C. C. A. 600; Central Stockyard Co. v. Mears, 89 App. Div. 452, 85 N. Y. Supp. 795.
-- Black's Law Dictionary
Legal Definition
One who, without any particular relation to a ship in distress, proffers useful service, and gives it as a voluntary adventurer, without any pre-existing covenant that connected him with the duty of employing himself for the preservation of the ship. See 10 Pet. (U. S.) 108, 9 L. Ed. 363.
-- Ballentine's Law Dictionary