As of September 2013, four new members joined the PDI network: SC Navrom Delta SA, Navmar Shipping Co. Ltd., Felbermayr Holding GmbH and SC SOCEP SA Constanta. All four new members can boast a long tradition in working on the Danube.
 
SC Navrom Delta SA is the first PDI member that is also dealing with passenger transport. The company was founded in 1999 and provides passenger and goods transport in the Danube Delta and Tulcea Municipality.
 
Under the motto “We don’t work for tomorrow. We create it.” Navmar Shipping Co. Ltd. provides shipping, offshore and industrial services, transport and logistics as well as corporate services since 2003. One other main field of commercial activity of Navmar is to provide tailor-made crewing and crew management services according to international ISO standards. 
 
Founded in 1942, Felbermayr Holding GmbH is the lead company for 21 operative subsidiaries which work in the field of logistics and transport, lifting technology as well as construction and civil engineering. Within the field of transport, the basis for the company's strength lays in the integration of all three transport modes: road, rail and water. Continuously growing and expanding, the company is one of the most significant international players.
 
SC SOCEP SA is a leading Constanta Port operator, owning a container and general cargo terminals in the Port of Constanta. Founded in 1991, SOCEP continuously improved its cargo handling services with containers, dry and break bulk cargo being the core of its operations.