Carrronades were short-range, comparatively light-weight cannons mounted on special slide carriages. This type of cannon, invented at the Carron Foundry in Scotland in 1779, was very popular at the end of the 18th century and the beginning of the 19th century. Because they were popular, slight variations in their design, such as the presence or absence of trunnions (pivotal pins), help to date them. This illustration is of an early style. According to archival documents, Chippewa was carrying fourteen 32-pounder carronades in addition to other cannons. Image courtesy Donald H. Keith, The Search for Trouvadore 2008, NOAA-OER.