GENERAL KNOWLEDGE

Detailed explanation-1: -Although Chinese cannons were placed on ships during the Yuan dynasty, they really took off as a military weapon during the Ming (1368 – 1644 CE) dynasty. Ancient Chinese generals fighting against the Vietnamese in southern China and the Mongols and tribes in northern China, requested cannons to be used.

Detailed explanation-2: -The cannon first appeared in China sometime during the 12th and 13th centuries. It was most likely developed in parallel or as an evolution of an earlier gunpowder weapon called the fire lance.

Detailed explanation-3: -Cannons are made of two different metals, cast iron and bronze. Most cannons were made of cast iron and that is the kind most often found by divers.