The Knarr is the Norse term for ships that were built for Atlantic voyages. They were cargo ships averaging a length of about 16 m, a beam of 4.6 m, and a hull capable of carrying up to 122 tons. Speeds of up to 10 knots could be reached. Knarrs routinely crossed the North Atlantic centuries ago carrying livestock and stores to Greenland. It was capable of sailing around 120 km in one day and held a crew of about 20 to 30. This type of ship was used for longer voyages and also for hazardous trips. It is also shorter and sturdier it depended mostly on sail-power and used its oars only as auxiliaries if there was no wind on the open water.
Sources: Wikipedia: Viking ships
A table for sea traveling is presented below. It takes into account the number and type of crew members, the time of day and the weather conditions. The travel distance is mostly 1, 2 or 7 nodes depending on the amount of cargo.
|Vessel||crew||cargo||distance per day (km)||nodes (max)|
|type of effect||half full||full||heavy rain / snow||heavy storm / blizzard||dusk||night|
|cargo effects||-1 nodes||-2 nodes|
|weather effects||-2 nodes||-3 nodes|
|time of day effects||-1 nodes||-2 nodes|