The next design was of construction (also called ). In this design overlapping boards are held together with nails. Named the Nydam ship for being found in the Nydam bog in 1863 in south Jutland. It measured 77 feet (23.5 meters) long, a little over 11 feet (3.5 meters) wide and was about 4 feet (1.2 meters) deep. This ship was sunk (and filled with weapons) between 350–400 AD. Unlike the Hjortspring boat, the planks are held together with nails (the tips being bent over). It did not have a mast, as later designs would, it had places for 30 men to row. It also did not have a . This kind of shallow open ship could cross open sea but could be swamped (filled with water) and sink. This was a classic Northern design that in different forms could range as far as Constantinople or Newfoundland.