English Polski
Akademia Morska w Szczecinie

DSpace Home

DSpace/Manakin Repository

Advanced Search

  • Zakerdoost, Hassan; Ghassemi, Hassan (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Hydrodynamic shape optimization plays an increasingly important role in the shipping industry. To optimize ship hull and propeller shapes for minimum total (friction+wave) calm-water resistance and maximum open water efficiency, respectively, the main particulars of a hull and propeller model are considered as design variables. The optimization problem is performed by using an integrated hull-propeller system optimization problem (HPSOP) code in a multi-level and multi-point methodology in early-stage ship design. Three numerical methods with variable fidelity are employed to carry out the hydrodynamic performance analysis of a ship’s hull and propeller. A ship and its propeller are selected as initial models to illustrate the effectiveness of the proposed optimization procedure. The numerical results show that the developed technique is efficient and robust for hydrodynamic design problems.
  • Artyszuk, Jarosław (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    In this paper a simple four-point, in terms of time, but eight-value in total, identification method has been developed for the second-order linear Nomoto steering model. The algorithm intrinsically uses the zigzag test data in that it inherited some principles of the well-known procedure for the first-order model, from which it is essentially derived. The performance evaluation was then conducted with both simulated and real data. However, the results of these early, unprecedented efforts are far from satisfactory. Some potential sources of difficulties have been discussed. This calls for further research and improvement in order to provide a practical application of the method.
  • Juszkiewicz, Wiesław (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    At present, providing a clear presentation of the navigational situation around a navigator’s own ship (OS) is one of the most important issues facing device manufacturers. Integration of navigational devices on the bridge has made it possible to transfer information and present it in the form chosen by the navigator screen. However, this may cause a decrease in the clarity of information and hamper its interpretation. The ability to select the best information, and that which is most needed at a given moment, depends on navigator proficiency. Vectors are still the basic form of the graphic presentation of radar-tracked object data. However, the ability to track more objects at the same time in crowded areas results in a decrease in readability and can cause errors. This article introduces the possibility of presenting information about collision danger in the form of Dangerous Courses Sectors (DCS) together with an analysis of changes in these during typical ship encounter situations. DCS are calculated on the base of Dangerous Passing Areas (DPA) as bearings on the marginal points of these areas.
  • Łushnikow, Eugeniusz; Pleskacz, Krzysztof (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    This article has looked into the role of the magnetic compass in providing navigational safety for ships. The existing requirements of the magnetic compass for safe navigation in case the gyro compass breaks-down and in case of terrorists abusing GPS signals do not solve the problems that occur in everyday life. Therefore, a new rational requirement has been proposed for the accuracy and frequency of deviation adjustment work assuring the safety and cost effectiveness of navigation. Vessel owners and masters have responsibilities to ensure that magnetic compasses are maintained in good working order, are adjusted and accompanied by a table or curve of residual deviations. This article has outlined the most urgent problems for the adjustment of magnetic compasses that apply to all ships irrespective of size and navigation area. The proposed method has been verified experimentally.
  • Nowy, Agnieszka; Gucma, Lucjan (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    This paper presents the method used for the creation of ship traffic models in Southern Baltic Traffic Separation Schemes (TSS). The analysis of ship traffic was performed by means of statistical methods with the use of historical AIS data. The paper presents probabilistic models of ship traffic’s spatial distribution and its parameters. The results showed that there is a correlation between the standard deviation of traffic flow and TSS lane width that can be used in practical applications to ensure the safety of navigation; improve navigation efficiency, safety and risk analysis in given area, and for the creation of a general model of ship traffic flow.
  • Anczykowska, Anna; Rekowska, Paulina; Ślączka, Wojciech (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    The Baltic Sea is crisscrossed by several dense vessel traffic routes. Growing shipping traffic increases the likelihood of collisions. A quantitative analysis of the impact of fishing vessel traffic streams on streams of merchant vessel traffic aims to identify areas of intense traffic of this type and to assess the potential risks. The identification of intersections of fishing vessel routes and merchant shipping traffic allows us to identify spots of potential collisions. The analysis made use of the IALA IWRAP Mk2 program and AIS data collected from April 1, 2013 to March 31, 2014.
  • Dramski, Mariusz (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    A process is an ordered set of related activities taking place in a given time. Processes are present in all branches of the economy, engineering, science, etc. Due to the huge amount of data produced the rapid development of data mining techniques has been observed. Similar methods are also used in the context of processes and are called process mining. The main task of process mining is to create a process model, which is used to reason about the process and to make decisions inside it. The process model may be used to discuss responsibilities, simulations, predictions, etc. The main data structures in process mining are event logs. It is always very important to have correct data which makes creating a reliable process model possible. In this paper the basic guidelines for recording such event logs have been described and conclusions were drawn. The main focus of this research was transport problems.
  • 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

Search repository

Advanced Search

Browse

My Account

RSS Feeds