The shift of freight from road to water is one of the European strategies to reduce the negative impacts of the increasing transport volume. The river Rhine and other major rivers like the Danube, or the network of deep water canals with good infrastructure can be considered as the backbone of the European inland water-way transport system. But these inland waterways presently serve only parts of west, central and south-east Europe. Far more inland waterways do exist in other countries and regions, but due to their insufficient either permanent or seasonal low water depth and the limited size of the admitted vessels, only a comparatively low volume of transport can be achieved. The upgrading of these waterways to a higher capacity is planned at long term but often restricted by technical, environmental and / or for budgetary reasons. The aim of the INBAT project was the development of the pushed train concept, which can be effectively operated on seasonally shallow waterways on permanent basis. Technical objectives have been precisely given: - Increase of payload for barges by at least 20 %. - Decrease of construction and operation costs for barges and pushers by at least 30 %. - Application of new light weight materials and material combinations in water transport. - Provision of reliable data and methods for dimensioning the new super light weight materials and related hull structures based on physical tests and mathematical assessments. - Innovative, future oriented and more efficient production technologies in construction. - Efficient low draught propulsion systems. - Improvement of the overall efficiency by more than 30 % considering the life time of the transport system. During initial cycles with all project partners and their different expertise and background, various new concepts for new light weight barges and innovative pushers were proposed, discussed, further analysed for technical feasibility and for costs / benefit criteria. Based on the requirements for the selected waterways the maximum overall dimensions of the barge train and the individual sizes of barges and push boat were optimised with respect to cargo capacity, standard container sizes and particularly longitudinal strength considerations. The INBAT project has successfully developed the innovative barge train. This combination of push boat and barges will be able to transport a greater capacity of cargo in case that the water depth of the river or canal is strongly limited. Conceptual design of the pushed train consists of two barges and the pusher which can be profitably operated at average draught of approximately 0.9 m in the navigational season. Project added value included: - cooperation with recognised European research institutes - transfer of knowledge; - elaboration of new experimental techniques, extrapolation of INBAT experience to the standard work; - patent pending; - manufacture and implementation of new tests stands and measurement equipment; - development of dedicated software; - implementation of CFD techniques; - elaboration of physical, chemical and strength properties of innovative sandwich materials; - implementation of advanced, non-linear methods of structure strength evaluation; - four direct commercial follow-up projects. Better transport performance of INBAT has been made possible by: - a reduced light weight of the barges; - improved barge transport capacity, both in terms of volume and weight; - extended utilisation of the waterway in periods of low water levels; - power- efficient propulsive devices, optimised for shallow water; - cost- effective ship structure construction methods; - modular design concepts reducing building and maintenance cost. Compared to the present conventional barge trains operated on the rivers Elbe and Odra and considering an equivalent operation profile, the benefits of an INBAT system were almost 30 %.