At least two harbours on the Baltic Sea can be used to unload a topside to be decommissioned. Shipping lanes are present from most of North Sea fields straight to both shipyards. These shipyards can serve vessels and barges with the immersion of 13.5m and up to 270m long. Operational areas of shipyards are about 9,000,000 square meters. Depends on a contract, land provided for a particular module of a platform is chosen where a following decommissioning job can be carried out safely once unloaded from the barge or vessel.