Supercargo

A supercargo (from Spanish sobrecargo) is a person employed on board a vessel by the owner of cargo carried on the ship. The duties of a supercargo are defined by admiralty law and include managing the cargo owner's trade, selling the merchandise in ports to which the vessel is sailing, and buying and receiving goods to be carried on the return voyage.

He has control of the cargo unless limited by his contract or other agreement. For instance, the supercargo has no authority over the stevedores, and he has no role in the necessary preparatory work prior to the handling of cargo. Because a supercargo sails from port to port with the vessel to which he is attached, he differs from a factor, who has a fixed place of residence at a port or other trading place.

During the Age of Sail from the 16th to the mid-19th century the supercargo was the second most important person aboard a merchant ship after the captain.

In 1818, Jean Laffite appointed Jao de la Porta supercargo for the Karankawa Indian trade.

On ships of the Swedish East India Company (1731–1813), the supercargo represented the company and was in charge of all matters related to trade while the captain was in charge of navigation, loading and unloading of cargo as well as the maintenance of the ship. In reality, the captain could do nothing without a written order from the supercargo. A new supercargo was always appointed for each journey who also had to keep books, notes and ledgers about everything that happened during the voyage and trade matters abroad. He was to present these immediately to the directors of the Company on the ship's return to its headquarters in Gothenburg. The supercargo received a heavy fine for each day the books were delayed. Helping him in all this he had a staff of assistants: a concierge, a cook, a footman and his own ship's court consisting of seven persons. According to historical documents, the court remained busy throughout the voyage. The supercargo also had to maintain and run the company's factory at the trading destination.

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