Longships of from 12 to 32 oars were called "Karvi". The Gokstad Ship is a famous ship of the Karvi type. The Gokstad ship was excavated in 1880. Its mast was cut off but otherwise the ship was well preserved. It was 76 feet (23 meters) long and 17½ (5.3 meters) wide. The Gokstad ship had a keel and was made of oak. Its rudder was about 11 feet (3.3 meters) long; big enough to steer the ship in any weather. The mast stood about 40 feet (12 meters) tall.