Water transport, both sea and inland, is the cheapest, least invasive, and safest option for non-standard loads; hence, it is important to increase the percentage share of inland waterway transport on the rivers of Central and Eastern Europe. Transporting cargo is particularly difficult on shallow waterways because rivers overloaded with sediment determine the vertical parameters on inland waterways. A ship’s safe manoeuvrability depends on the available water depth of the navigational area concerning the vessel’s draught. The draught is related to channel depth and sediments. The paper presents a model assessment of a new tool for studying limitations for ships carrying oversized cargo and the shallow channel bed inland waterways. Our analysis was carried out on the Vistula River lowland reach for the winter hydrological conditions. The Lower Vistula River in Poland is a clear example of a sedimentation problem. This waterway is also a zone of active sediment transport of sandy material; a massive volume of sediment reaches 1 million cubic meters per year. The results of this research could be helpful for inland transport management, risk assessment of ships entering waterways with shallow channel beds such as the Vistula River, and analysis for a new waterway project.
The paper is concerned with the analysis of simulation research results of newly design Piast ferry entering to modernized Ystad Port. The ship simulation model is described. After execution of real time simulations the Monte Carlo method of underkeel clearance evaluation is applied to asses the probability of ferry touching the bottom. The results could be used in risk assessment of ships entering to the ports.
Abstract:In the article expert research result are presented concerning ship's draught measurement error. The questionnaire was carried out in the group of navigation experts and used for building the model of ship's draught determination error. The results are implied in model for safety underkeel clearance determination.Keywords: expert research, ships draught, underkeel clearance Streszczenie: W artykule przedstawiono wyniki badań ekspertowych, dotyczących błędu wizualnego odczytu zanurzenia statku. Ankieta została przeprowadzona w grupie ekspertów w dziedzinie nawigacji morskiej i wykorzystana do budowy modelu błędu określania zanurzenia. Uzyskane wyniki wykorzystano w modelu określania bezpiecznej rezerwy wody pod stępką statku.Słowa kluczowe: badania ekspertowe, zanurzenie statku, zapas wody pod stępką Schoeneich M.
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