In 1819 the ‘Cornwall’ was bought by the East India Company and refitted under the command of Captain William Richardson (a description of the refit is on folio i). She then made several voyages carrying cargo from Bombay to the Persian Gulf and to Mocha in the Yemen. She also took part in Sir William Grant Keir's expedition of 1819 to suppress pirates in the Persian Gulf, and the log describes the siege of Ras al-Khaima. In 1821 she carried troops for Sir Lionel Smith's campaign against the Bani Bu 'Ali in Oman. Inserted at the end (folio 157) are two letters in Arabic, circa 1825, addressed to Abdul Rahman al-Rahim.