Stoneware vessels were an integral part of daily life in America from the time of European settlement, found on domestic archaeological sites throughout the 17th and 18th centuries. By the mid-19th century Americans continued to maintain a strong preference for stoneware pottery, primarily due to its remarkable durability. Of the three stoneware vessels recovered from the Jacksonville “Blue China” wreck, one is a salt-glazed stoneware jug of American production (1850-60) and represents the only identifiable American-made ceramic object found on the wreck site. The elongated, ovoid-shaped vessel is devoid of decoration with the exception of cobalt highlights at the handle terminal. Jugs of the Germanic tradition often have cobalt blue brushed within an incised design around handle terminals, suggesting some Germanic influence in the production of this stoneware item. This type of jug was typically used for any number of liquids that were stored in bulk, such as water, wine, rum, vinegar and oil. While the contents of the jug may have been part of the cargo, it was more logically intended as a serviceable shipboard vessel and thus comprised part of the domestic assemblage. Such vessels were produced in large quantities in the northeastern United States, in New York and Pennsylvania in particular, either of which may be the origin of this example. New York is most probable, as documented by similar wares.