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  • Dzwonkowski, Jan; Przywarty, Marcin; Bilewski, Mateusz (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    This paper presents an original kinematic method for the assessment of the safe parameters of waterway bends. The proposed method has been based on the analysis of the results obtained through the use of the developed simulation model which allowed for the examination of all the physically available paths of a ship’s centre of gravity. The results of the simulation were divided into defined subsets that enabled the assessment of the safe parameters of waterway bends. This paper also presents the calculations that were carried out for the theoretical reference bend.
  • Gucma, Stanisław; Artyszuk, Jarosław; Gralak, Rafał; Kowalski, Adam (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    The presented method for defining the conditions of safe operation of marine ferries in ferry terminals allows verification of shipowner ferry designs. In the first stage of this method, simulations are used to determine the allowable wind speed. The second stage comprises simulations of ferry berthing aimed at defining safe manoeuvring areas, the energy of berthing impact and propeller stream speeds at allowable wind speeds. The method was used in the design of a 228 m long hybrid ferry.
  • Gucma, Stanisław; Gralak, Rafał; Przywarty, Marcin; Muczyński, Bartosz (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    The article presents an original two-stage simulation method for the optimization of seaport parameters. Presentation of the method is based on example of parameter optimization of the outer container port in Świnoujście. Presented method uses two limitations of the objective function related to safety of manoeuvring and mooring of ships. It consist of two stages, first one is carried out for the parameters defined in the preliminary stage of design. On the basis of results from this stage, layout and other parameters of port waterways can be adjusted to satisfy assumed safety criteria. The second stage uses the parameters established in the first stage. It allows for small adjustments which will not change the safety of manoeuvring. The result of second stage is optimal parameters of the examined port waterways.
  • Juszkiewicz, Wiesław; Gucma, Lucjan; Perkovic, Marko (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    A key element in ensuring the safety of the port of Świnoujście against oil spills is to ensure combat units are properly equipped with oil spill collecting equipment, and that they have the ability to effectively use the existing resources. All of this should be properly reflected in the port’s contingency plans. It is also important to develop tactics for oil spill combat action that take into account both local conditions and worst case scenarios with parallel checking of these scenarios during the exercise and the table-top exercises. The use of computer simulation to forecast oil spill behaviour allows for better arrangement and more efficient use of resources and the optimum development of antipollution action and tactics. The specific location of the Świnoujście harbour, its breakwaters shape, and that shipping traffic is allowed only on the approaching waterway, may lead one to the conclusion that the port of Świnoujście is completely safe from any possible petroleum pollution after a ships’ collision and the antipollution action should focus only on maximising the protection of the coast. To verify this assumption, simulations of an oil spill spreading after a vessels’ collision were carried out. The purpose of the simulations was to determine the most unfavourable weather conditions which would lead to the port of Świnoujście being polluted, and to define the best tactics for conducting oil spill combat actions under such conditions. The simulations clearly indicated that, with a particular combination of weather conditions, pollution could occur inside the port. It could result in vessel traffic suspension and huge financial losses. Simulations were conducted using the PISCES II oil spill simulator.
  • Lisaj, Andrzej (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Advanced new methods of data transmission used in River Information Services are described. Implementation of GMDSS subsystems and analyses of the feasibility of applying satellite-based telecommunications systems to integrated navigational data transmission at the RIS-PL is discussed. This article presents a model of the architecture and deployment of radio communication systems in inland waterway and sea-river navigation. The processing of navigational data, transmitted during electronic ship reporting and used in inland shipping, is described. The new BICS standard for the processing and transmission of navigational data in inland navigation is presented. The author evaluates the advantages of the new radio communications technology for the safety of inland waterway vessel traffic.
  • Bugajski, Grzegorz; Małyszko, Marzena; Wielgosz, Mirosław (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Research studies have discussed the correct selection and choice of the optimal units for a specific type of search and rescue task. This article has described the characteristics and properties of merchant vessels that determine their potential for SAR (Search and Rescue) operation. An attempt was made to estimate the suitability of a craft according to its effectiveness and risk. This research may have an impact on improving the organization and coordination of search and rescue operations at sea. The authors have proposed criteria for evaluating merchant units during selection for planned SAR actions. A model for evaluating the suitability of a unit has been presented. It is a mathematical model with elements of expert knowledge. The model classifies attributes, taking into account the lower and upper risk limits and introducing a risk sensitivity factor. The article contains tables and graphs.
  • Chłopińska, Ewelina; Gucma, Maciej (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    The proximity of the sea has a strategic importance for Poland’s security and economy. LNG (Liquefied Natural Gas) may play an important role in the Baltic Sea Region in the near future – it may create opportunities for dynamic international economic cooperation for Baltic countries. Access to the Baltic Sea enables sustainable development consisting of the comprehensive exploitation of the country’s maritime potential, i.e.: the broad development of the maritime economy. In this paper the authors have given an overview of the benefits of a LNG terminal located in Świnoujście. Building a facility is a strategic investment that requires the involvement of all stakeholders at the local, regional, and national level. In this paper the authors have presented general information on the collection and transmission of natural gas. The aspects of trends in the LNG market have been discussed. Market conditions in the world and in Europe, concerning the investment in the Świnoujście LNG terminal, have been described. The implementation of the strategy has been aimed at supporting the pursuit of long-term development agreements integrating the maritime sectors with the other related sectors. The directions of gas distribution arising from the rational use of the LNG terminal in Świnoujście have also been presented. In addition, the economic impact of the location of the LNG terminal in Świnoujście on the development of the gas market in Poland was analyzed.
  • Chybowski, Leszek (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Dear Readers, It is my great pleasure to introduce the latest 52(124) issue of the Scientific Journals of the Maritime University of Szczecin. The current issue contains results of the latest research in marine engineering, sea navigation and transport engineering. The introductory article entitled “Structural analysis for ships in arctic conditions” was prepared by Prof. Ehlers Sören – head of the Institute for Ship Structural Design and Analysis at Hamburg University of Technology (TUHH) and adjunct professor at NTNU: Norwegian University of Science and Technology. He is an international expert in the field of sustainable Arctic Sea transport. This article summarises regulatory aspects of ship design for ice-covered waters, focusing on structural compliance and design ice-load determination. The publication was funded by the Ministry of Science and Higher Education of Poland from funds for science popularising activities: grant No. 790/P-DUN/2016. I hope that this articles is informative to all readers interested in effective and safe navigation in the Arctic regions. In the Marine Technology and Innovation section, we have included articles on the use of composite materials, computer simulations of deformations and tensions in the pipelines of hydraulic lifting systems and constraints in allocation of thrusters in DP simulator. The Navigation section includes articles related to collision avoidance at sea and the use of logical devices to process the nautical data. In addition, this section addresses issues of planning autonomous passage of vessels, two-dimensional coordinate estimation and the analysis of the LNG tanker Al Nuaman’s speeds during its first voyage to the LNG terminal in Świnoujście (route sections Arkona–Świnoujście–Arkona). The section devoted to Transport and Engineering includes articles on the use of graph theory in modeling transport networks and the definition of inland vessel position using a single stationary non-metric camera. Other topics included are the ability to test shipboard AIS instability and the inaccuracy on simulation devices, the radiooperator decision support system model and the helmet-mounted system of assisting a helicopter pilot during SAR operations. In addition, the Miscellaneous section includes reviews on the achievements of component importance analysis for complex technical systems, GPS/GNSS Spoofing and a Real-Time Single-Antenna-Based Spoofing Detection System, a method for determining landslides risks using Digital Elevation Model (DEM) created by Unmanned Aerial Systems with hydrogeological data connection, and also an extended discussion on the susceptibility of the roll equation to the bifurcation phenomenon. I would like to take this opportunity to inform our readers that the Scientific Journals of the Maritime University of Szczecin quarterly has been indexed in the Web of ScienceTM Core Collection Emerging Sources Citation Index Backfile (ESCI Backfile), which is an ESCI database archive in which our Scientific Journals were included last year (Chybowski, 2017). The ESCI Backfile archives list articles published in the period of 2005-2014. Another grand success of our quarterly is the third place in the “Top 25 Polish ESCI Journals by number of documents” rating with 727 indexed documents. It was announced in the proceedings of the November training conducted by the company Clarivate Analytics – the owner of the Web of ScienceTM platform (Kapczyński, 2017). In addition to the high and constantly upgraded quality of the journal, this success is due primarily to the accurate data structure as well as improved mechanisms used in the repository of scientific articles for online magazines developed in 2015 by the Maritime University in Szczecin. To access the online version of the current and archival issues of the journal (starting with the first issue published in 1973) please 6 Scientific Journals of the Maritime University of Szczecin 52 (124) visit our website at http://scientific-journals.eu/. The digitisation and sharing archival versions of all publications was funded by the Ministry of Science and Higher Education of Poland from the previously listed funds for science popularising activities. Moreover, I would like to inform you that, in accordance with official information obtained from the Scientific Journals Assessment Unit of the Index Copernicus International dated 17 November 2017, the Scientific Journals of the Maritime University in Szczecin were assessed in terms of publication quality and received the result of 90.35 expressed by means of the ICV 2016 indicator (Index Copernicus International, 2017). For comparison, in the previous three years the ratings were respectively: in 2014 the ICV 2013 indicator = 6.16 (64.38 under the new methodology), in 2015 the ICV 2014 indicator = 7.76 (79.38 under the new methodology), in 2016 the ICV 2015 indicator = 87.49. So in the above-mentioned period the index has increased by 42.5%. It should be emphasised at this point that the continuous improvement of the publication quality of our journal is a result of the hard work of the Editorial Board, members of the Scientific Committee and reviewers as well as the policies of the current and previous authorities of the University that have supported the development of the quarterly. I am deeply grateful to all the people involved. I strongly encourage the authors to submit their work and readers to provide us with your comments. References 1. Chybowski L. (2017) Editorial preface. Scientific Journals Of The Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie 51 (123), pp. 5–6, doi: 10.17402/224. 2. Index Copernicus International (2017) ICI Journals Master List / Zeszyty Naukowe Akademii Morskiej w Szczecinie. Available from: https://journals.indexcopernicus.com/search/details?id=4059 [Accessed: December 11, 2017] 3. Kapczyński M. (2017) Emerging Sources Citation Index Backfile. Expanding the depth of your research. Claritive Analytics, 29 Nov 2017, p. 29. dr hab. inż. Leszek Chybowski, Associate Professor Editor-in-Chief
  • Ehlers, Sören (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Ships are operating in regions with seasonal ice coverage outside the Baltic Sea. Due to the lack of experience operating in regions such as the Arctic Sea, existing design guidelines may not lead to reliable and safe ships. This article summarises regulatory aspects of ship design for ice-covered waters, focusing on structural compliance and design ice load determination. The latter will be obtained using a probabilistic approach and compared to the current rule-based load. Based on the discrepancy and the existence of ice induced damage, different measures aimed at mitigating damage are presented. Furthermore, the influence of sub-zero temperature (SZT) in a collision scenario on the material response is presented
  • Grabian, Janusz; Ślączka, Wojciech; Pawłowska, Patrycja; Kostrzewa, Waldemar (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    This work indicates that new and innovative materials used in the construction of floating and stationary marine structures can contribute to increased operational safety in addition to reduced service costs and frequency and other reduced operating costs, including the costs of staff and running maintenance. Such materials include metal-ceramic composites whose properties, such as high resistance to abrasive wear, favourable coefficient of friction, good thermal conductivity and low thermal expansion, allow them to be used in tribological pairs in mechanisms, control elements and actuators of various devices operating in marine power plants, thereby increasing their operational reliability. Properties of metal-ceramic composite foams, i.e. vibration and noise damping, good thermal insulation performance, dissipation of electromagnetic waves and absorption of explosive energy, make them ideal for use in shipbuilding and construction of drilling towers, at the same time increasing the levels of comfort during operation. Composite metal-ceramic foams can significantly reduce the effects of fires as they are durable, water-resistant and creep resistant thermal insulators which can limit the destruction (deformation) of steel structures. This paper presents proposals for the application of these materials to selected technical solutions in offshore structures.
  • Panasiuk, Katarzyna; Hajdukiewicz, Grzegorz (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    In this article the problem of plastic recycling, and in particular waste polyester-glass, has been described. In brief, the technology for the production of new composite materials by hand, made by the contact method, using the matrix filling in the form of polyester-glass waste coming from worn-out laminates used in the construction of ship hulls. The waste used was a powdered mixture of resin particles, glass fibers, and composite particle agglomerates. A method for producing composite panels with a recyclate content of between 10% and 30% was carried out. The samples were then manufactured according to the requirements of the standard, i.e. PN-EN ISO 527-4_2000P. Samples obtained from the test plates were subjected to a static stretch test, to verify the impact of the integrated wastes on the mechanical properties of the composite. Photographs of the structure of the obtained material have also been presented. These photos showed significant differences in the composition of the resulting composites determined by the amount of waste material used. Analysis of the results indicated that increasing the amount of recyclate reduces the value of the material’s strength limit and also reduces the plasticity of the material. This article has provided an introduction to more comprehensive research on the recycling of plastics.
  • Szelangiewicz, Tadeusz; Żelazny, Katarzyna (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    One of the methods of collecting polymetallic nodules from the sea floor is a hydraulic system using a single or double vertical pipeline. While mining, collecting pipelines suspended from a mining support vessel (MSV) move together. As a result of both the MSV’s motion with a suspended pipe system and water action (including deep-water currents) a vertical deflection and deformation occur along the pipeline. Simultaneously, stretching and bending tensions emerge along the pipeline. The article presents computer simulation results of vertical deflection and tensions within single and double vertical pipelines with fixed force from the ship’s movement (linear movement at constant speed) and regular force from the waves.
  • Zalewski, Paweł (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Vessels conducting dynamic positioning (DP) operations are usually equipped with thruster configurations that enable the generation of force and torque. Some thrusters in these configurations are deliberately redundant to minimize consequences of thruster failures, enable overactuated control and increase the safety in operation. On such vessels, a thrust allocation system must be used to distribute the control actions determined by the DP controller among the thrusters. The optimal allocation of the thrusters’ settings in DP systems is a problem that can be solved by convex optimization methods depending on the criteria and constraints used. This paper presents a quadratic programming (QP) method, adopted in a DP control model, which is being developed in Maritime University of Szczecin for ship simulation purposes.
  • Baldauf, Michael; Mehdi, Raza; Fischer, Sandro; Gluch, Michael (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Avoidance of collisions is one of the most important tasks for the officer of the watch on a ship’s bridge. Measures and actions required to avoid such accidents are described in the Convention on the International Regulations for Preventing Collisions at Sea (COLREGs) adopted by the International Maritime Organization (IMO) in 1972 and still valid, with several minor amendments, since then. On the basis of a proper look-out at all times, by sight and hearing, and the use of all available means, also including technical equipment installed on-board as well as information provided by a Vessel Traffic Service (VTS), the navigating officer collects traffic and environmental data and combines them with their own ship data to construct a mental traffic image for the assessment of risk of collision with other objects in the vicinity. In the case wherre there is an unacceptable risk she or he has to decide on taking action. In most of the cases decision making is appropriate to the prevailing circumstances and ships maneuver and pass at a safe distance. Only in very rare cases, due to whatever reasons, watch officers fail in taking appropriate actions in good time. It is assumed that, if effective alerting algorithms would be available, a substantial number of collisions at sea, and especially in coastal waters, can be avoided by making the watch officer aware that the ‘last line of defence’ for taking action is close to come. It is assumed that there is potential in applying the principle of the resolution advisory alert of an ACAS (Airborne Collision Avoidance System)/TCAS (Traffic Alert and Collision Avoidance System) in aviation and adapt it to the needs of maritime traffic. In this paper, the authors introduce a method for triggering collision warnings by focusing specifically on the critical last phase of an encounter and taking into account the maneuvering characteristics of the navigating ship. They comprehensively explore the application using scenario studies discussing the operational aspects of varying implementation states (one ship only, SOLAS ships only).
  • Filipowicz, Włodzimierz (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Nautical measurements are randomly and systematically corrupted. There is a rich scope of knowledge regarding the randomness shown by results of observations. The distribution of stochastic distortions remains an estimate and is imprecise with respect to their parameters. Uncertainties can also occur through the subjective assessment of each piece of available data. The ability to model and process all of the aforementioned items through traditional approaches is rather limited. Moreover, the results of observations, the final outcome of a quality evaluation, can be estimated prior to measurements being taken. This a posteriori analysis is impaired and it is outside the scope of traditional, inaccurate data handling methods. To propose new solutions, one should start with an alternative approach towards modelling doubtfulness. The following article focusses on belief assignments that may benefit from the inclusion of uncertainty. It starts with a basic interval uncertainty model. Then, assignments engaging fuzzy locations around nautical indications are discussed. This fragment includes transformation from density functions to probability distributions of random errors. Diagrams of the obtained conversions are included. The presentation concludes with a short description of a computer application that implements the presented ideas.

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