A system for supplying pigs to a subsea pig launcher using a system carried and controlled by a remotely operated vehicle (200). The pigs (22) are carried in racks (224) that hold multiple pigs. The racks (224) are extended and the pigs are allowed to drop into the barrel (20) of the subsea pig launcher. The system is also equipped with a system (234) that retracts the racks if hydraulic and electrical power is lost during the reloading process so that the remotely operated vehicle (200) can be retrieved to the surface safely. The reloading process can be carried out by a remotely operated vehicle support vessel without the need for heavy lifting equipment or a large deck area.
