The wreck of Miedziowiec (Copper Wreck) has been discovered in 1969 during the trawling of the seabed by the Gdańsk Maritime Office and Polish Ship Salvage crews. While performing the inventory in 1971 it has been determined that at the depth of about 15 meters, in the sandy seabed, a dark chunk of an irregular shape is laying, a fragment of shipboard of which was recognizable. Next to it, the single elements of wooden ship's construction were covering the sea bottom. The rest of the wreck with its cargo was hidden under the surface of the consistent fossil, a certain mixture of tar, iron ore and sea sand.
In 1975 it has been decided that both the vessel and its load should be retrieved, to enable performing further analysis on the dry land. After the examination, it turned out that the wreck used to be a hulk type ship.
Miedziowiec has been made from oak, using the crust method. Based on the studies of the preserved fragments of the construction it has been estimated that the ship was 24 m long, 8 m wide, 4 m high and had cargo deadweight of 150 lasts (around 300 tons).