From Wiki: On 30 January 1698, Kidd raised French colours and took his greatest prize, the 400-ton Quedagh Merchant,[18][19] an Indian ship hired by Armenian me

From Wiki: On 30 January 1698, Kidd raised French colours and took his greatest prize, the 400-ton Quedagh Merchant,[18][19] an Indian ship hired by Armenian merchants that was loaded with satins, muslins, gold, silver, an incredible variety of East Indian merchandise, as well as extremely valuable silks. The captain of Quedagh Merchant was an Englishman named Wright, who had purchased passes from the French East India Company promising him the protection of the French Crown. After realising the captain of the taken vessel was an Englishman, Kidd tried to persuade his crew to return the ship to its owners,[citation needed] but they refused, claiming that their prey was perfectly legal, as Kidd was commissioned to take French ships, and that an Armenian ship counted as French, if it had French passes. In an attempt to maintain his tenuous control over his crew, Kidd relented and kept the prize. When this news reached England, it confirmed Kidd's reputation as a pirate, and various naval commanders were ordered to "pursue and seize the said Kidd and his accomplices" for the "notorious piracies" they had committed.[20] Kidd kept the French sea passes of the Quedagh Merchant, as well as the vessel itself. While the passes were at best a dubious defence of his capture, British admiralty and vice-admiralty courts (especially in North America) heretofore had often winked at privateers' excesses into piracy, and Kidd may have been hoping that the passes would provide the legal fig leaf that would allow him to keep Quedagh Merchant and her cargo. Renaming the seized merchantman Adventure Prize, he set sail for Madagascar.