The Mark 16 Gun is a type of artillery piece developed during World War II. It was designed for coastal defense and was capable of firing large shells over long distances. The gun was mounted on a rotating platform, allowing it to target enemy ships effectively. This artillery system was notable for its impressive range and firepower, making it a significant asset for military operations. The Mark 16 Gun was primarily used by the United States Navy and played a role in various naval engagements during the war. Its design influenced future artillery developments in the post-war era.