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MaSS

stepping stones of maritime history

History

The wreck is still exceptionally well preserved. However, it is endangered by human activities such as net fishing and sport diving, and it is in jeopardy because of the shipworm (teredo navalis), too. The wreck was covered by silty sediment shortly after its sinking, which is the reason for the good state of preservation. Especially the starboard side is embedded in silty material, and 14 planks of this part of the ship are preserved. In other words, the starboard side is nearly complete. The keel, the stem and parts of the deck beams are preserved as well.

Construction

The Darsser Cog shares several construction details  with the well known Bremer Cog. As such, it is an  important indicator of the changing shipbuilder  traditions of the 13th century in the Baltic area.  More influences from the North Sea area came into the Baltic sea, such as the flat, in carvel-technique built hulls - as in the Darsser Cog.

Darsser Cog

Cargo

The cargo of the ship consisted of roof tiles, Norwegian wetstones and pieces of antler, which give a good picture of the trade in the early phase of the Hanseatic period. In addition to these, parts of the crews equipment have been found in the wreck and its surroundings, which probably will give detailed information about the standard of seafaring techniques in the 13th century.

Darsser Cog

A cask containing Icelandic sulphur, antler sticks, and Norwegian whetstones (Source: MoSS).

 

Darsser Cog

Cargo, whetstones from Eidsborg, Norway (Source MoSS project).

Description

A 13th century cog. The cog was a spacious transport vessel. The ship was 23 meters long and it was build of oak. It is dated to the late 13th century by dendrochronology (between 1277 and 1293). The analysis of the wood samples from the planks leads us to assume that the ship was build in the region of the Weichsel estuary.

A replica of a Cog (The Bremer Cog).

Status

The wreck was covered by silty sediment shortly after its sinking, which is the reason for the relatively good state of preservation through the centuries. Especially the starboard side is embedded in silty material, and 14 planks of this part of the ship are preserved. In other words, the starboard side is nearly complete. The keel, the stem, and parts of the deck beams are preserved as well.
The Darsser Cog gives us a great opportunity to get information about the constructional details of a ship of this kind.

Darsser Cog

Documenting the wreck.

 

Darsser Cog

The ship' flat bottom is characteristic of the Cogs of the North Sea area. (Source: MoSS project).

 

Darsser Cog

The port side of the cog.

 

Darsser Cog

The starboard side is completely preserved (Source: MoSS project).

 

Darsser Cog

 

Darsser Cog

The forward quarter with the keel/stem construction and the first frames. (Source: MoSS project)

Teredo Navalis

The wreck was well preserved up to the mid 1990's, but now it is endangered by the ship worm Teredo navalis. In 1993, the shipworm entered the Baltic Sea when a big amount of North Sea salt water passed the Store Belt. Teredo navalis adapted rapidly to the new ecological surroundings and started to reproduce. The worm has now reached the island of Rügen which means that the Darsser Cog is situated on the eastern border of the shipworm area.

Damage of the shipworm on the Darrser Cog (Source: Machu).

References

References online

East Indiaman

Roman structures