Privateering System (Letter of Marque)

Timeline

1. c. 1243–1500England and the coasts of Western Europe · Western EuropeFrom the 13th century, English kings began issuing formal documents authorizing private shipowners to make retaliatory seizures of enemy merchant vessels, forming the legal prototype of the Letter of Marque. In the late Middle Ages, during the Hundred Years' War between England and France and trade conflicts with the Hanseatic League, letters of marque were widely used to harass enemy sea supply lines at low cost, gradually becoming part of European international practice.
2. c. 1568–1620Atlantic Ocean and Caribbean Sea · Caribbean SeaIn the second half of the 16th century, Queen Elizabeth I of England granted letters of marque in large numbers; Francis Drake, Walter Raleigh, and others attacked Spanish American silver fleets as privateers, with part of the profits going to the royal treasury. During the Dutch Revolt (1568–1648), the Sea Beggars (Geuzen) attacked Spanish ships under letters of marque issued by the Dutch authorities, and privateering became an important instrument of European sea power competition, becoming increasingly standardized.
3. 1621–1640Atlantic Ocean and Caribbean Sea · Caribbean SeaThe Dutch West India Company (WIC) was founded in 1621, and its charter explicitly included authorization to privateer against Spanish and Portuguese vessels, deeply combining the letter of marque system with joint-stock company capital operations. In September 1628, WIC naval commander Piet Hein captured the Spanish annual silver fleet laden with silver in Matanzas Bay, Cuba (about 11.5 million Dutch guilders), the largest single privateering operation in history; the funds were immediately used to finance the WIC conquest of Pernambuco, Brazil (1630).
4. 1713–1856Paris, France · FranceIn the 18th century, as standing navies were built up, the military value of privateers declined, while confusion between the identities of pirates and privateers sparked diplomatic disputes. After the Crimean War, the 1856 Declaration of Paris Respecting Maritime Law was signed by major powers including Britain, France, and Russia, explicitly prohibiting privateering, and the letter of marque system, which had endured for over six centuries, formally left the stage of history.