The Karvi (or karve) is the smallest vessel that is considered a longship. According to the 10th-century Gulating Law, a ship with 13 rowing benches is the smallest ship suitable for military use. A ship with 6 to 16 benches would be classified as a Karvi. These ships were considered to be "general purpose" ships, mainly used for fishing and trade, but occasionally commissioned for military use. While most longships held a length to width ratio of 7:1, the Karvi ships were closer to 4.5:1.The Gokstad Ship is a famous Karvi ship, built around the end of the 9th century, excavated in 1880 by Nicolay Nicolaysen. It was approximately 23 m (75 feet) long with 16 rowing positions.