Pipeline transport 1994, a 15 km milk pipeline ran between the Dutch island of Ameland and Holwerd on the mainland, of which 8 km beneath the Wadden Sea. Every day, 30.000 litres of milk produced on the island were transported to be processed on the mainland. In 1994, the milk transport was abandoned. In places, a pipeline may have to cross water expanses, such as small seas, straits and rivers. In many instances, they lie entirely on the seabed. These pipelines are referred to as "marine" pipelines (also, "submarine" or "offshore" pipelines). They are used primarily to carry oil or gas, but
Trans Europa Naturgas Pipeline from Zeebrugge and in Mittelbrunn it is connected with the transport system of the MEGAL pipeline system which transports Russian natural gas from the German-Czech border to German regions and France. The length of the pipeline is and it runs in two lines. It has a capacity of 15.5 billion cubic meters per year which the operator intends to increase by 2 billion cubic meters per year. The diameter of pipeline varies from . The pipeline comprises four compressor stations. The pipeline is owned and operated by Trans Europa Naturgas Pipeline GmbH & Co. KG, a joint venture of Open