This is shorter than the Gokstad type of longships, but knarrs are sturdier by design and they depended mostly on sail-power, only putting oars to use as auxiliaries, if there was no wind on the open water. Because of this, the knarr was used for longer voyages, ocean going transports and more hazardous trips than the Gokstad type. It was capable of sailing 75 miles (121 km) in one day, held a crew of about 20-30, and knarrs[5] routinely crossed the North Atlantic in the Viking Age, carrying livestock and goods to and from Greenland and the North Atlantic islands.