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  • Rajewski, Przemysław (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    A significant number of failures and accidents of Polish fishing vessels operating in the Baltic Sea was the impetus to examine their sources. It was found that one of the important factors causing the failure is poor condition of the fuel systems and inappropriate fishing vessels to be operated. Typical fuel installations operated on Polish fishing vessels were discussed. The methodology of sampling and testing of samples of fuel from fishing vessels to assess its fuel quality has been presented, as well as tests results
  • Ushkarenko, A.O. (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    A general characteristic of power fluctuation as the casual discrete phenomena in marine power plants have been considered. The approach to processing of the statistical information necessary for a substantiation of a technique of voltage failures’ statistical research is offered. The software for the statistical analysis of processes power change and definition of a power station operating mode are developed;Ryabenkiy, V.M
  • Stefanowski, Andrzej; Zwierzewicz, Zenon (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    This paper presents observations and remarks on the work of ship's steering gear controlled by the autopilot in high seas. Attention is drawn to the insufficient power of steering gear operated by the autopilot in high waves and the consequent possibility of overloading and damage to the gear, creating a threat to the ship. Standard safeguards against damage are discussed. It is suggested that the alarm system should be extended to indicate the load of steering gears. The authors propose a method for assessment of the steering gear load by using a signal that is a nonlinear function of the actual rudder angle, based on the solution used in TS-type autopilot adaptation blocks. The results of computer simulations to obtain such signals for autopilot-controlled ship movement in irregular waves (sea state ranging from 3 to 6) are presented. The conclusion reached is that the signal can be used to assess the steering gear load, which may contribute to increasing ship’s safety in high sea states
  • Wiśniewski, Bernard (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    W artykule zaprezentowano łączne oddziaływanie falowania i wiatru na prędkość statku. Teoretycznie wydzielono wpływ wiatru na statek, uwzględniając odpowiednie prędkości i kierunki wiatru. Większy wpływ na ogólne straty prędkości statku przypisano falowaniu. Określenie oddzielnego wpływu wiatru i falowania adoptowano do programu obliczeniowego SPOS
  • Wiśniewski, Bernard; Wolski, Tomasz (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    The paper presents the influence of the tsunami on the safety of the shipping and seaports. The analysis based on the tsunami from 11 March 2011 on Japanese islands and coasts of Pacific. The paper describes the destruction caused by tsunami waves, both in port and coastal infrastructure. A list of casualties in dry bulk vessels and boats in Japan and in the U.S. coastis presented. Recommendations for ships with the warnings and messages before the tsunami are identifie
  • Witkowska, Anna; Śmierzchalski, Roman (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    The article presents various configurations of nonlinear ship course controllers. The controllers were designed based on backstepping method, the PD and sliding mode control. The controller versions at the design stage take into account the dynamic properties of the steering gear. A simplified simulation model of the B-481 type vessel, including wave and wind effects, was applied to simulate the control algorithm by using time domain analysis. The results of computer simulations have shown the advantages of control algorithms taking into account the dynamics of steering gear such as the increasing the economic efficiency of system operation, the reducing rudder activity and increasing the average speed of the vessel during the voyage
  • Wołejsza, Piotr (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    The accuracy of calculating the parameters of another vessel movement and the consequent accuracy of determined ship encounter parameters is of key importance for collision avoidance and navigational safety. It is also essential to promptly detect a manoeuvre of another vessel, or target, especially where such manoeuvre cannot be detected by other methods, e.g. due to restricted visibility. Therefore, research in this field aims at improvement of radar target tracking methods
  • Pleskacz, Krzysztof; Lushnikov, Evgeny M (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    The article presents the results of compliance with the provisions relating to the operation of magnetic compasses and gyrocompasses. The proper conducts of ship’s documents, related to this issue have been analyzed. The paper also presents proposals for action aimed at facilitating and improving the existing situation
  • Pleskacz, Krzysztof; Lushnikov, Evgeny M (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    The article presents a method to determine the gyro correction by utilizing parallel lines used in radar, taking into account the advantages of this method, which are the convenience and ease of use. The accuracy of the method according to the geographical and technical factors was analyzed. The mathematical calculation of the final results accuracy was presented. Situations in which it is recommended to use this method for determining gyrocompass corrections due to the high accuracy were describe
  • Łozowicka, Dorota (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    This article aims to present the principles of the method of genetic algorithms and examples of the use of this method for solving problems related to proper organization of evacuation both from ships and land buildings. The paper also proposes the use of genetic algorithms to search for the optimal distribution of evacuation. The problem of course was brought to the task of evacuation transport, which is so designated evacuation routes for different groups of people to get the shortest possible evacuation time. Application of genetic algorithms will determine the most preferred target as passengers from the premises where they are located at the start of the evacuation to the assembly. Describes how to encode the problem in the genetic algorithm and a simple calculation shows the distribution of escape routes and validate the assumed method of encoding
  • Dereszewski, Mirosław (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    The paper presents an idea to utilize crankshaft’s angular speed variation and its derivative for monitoring of trouble of Diesel engine combustion quality. Measurement of instantaneous angular speed, recording and archive of values is easy to obtain using optical indicator and programmable logic controller. Advantage of this method is simple installation and constant signal. Collected data can be processed on board, basing on MS Excel formulas. Observation of changes of instantaneous speed and acceleration can not replace more accurate monitoring systems like Main Effective Pressure measurement or vibration monitoring, but is an excellent tool for early warning. When a signal about deteriorating of engine performance is obtain, more accurate diagnostic can be implemented. Expected final result will be elimination of engine’s cycle’s irregularity. Proposed method is at early stage of investigation and further steps to prove its utility and to develop concluding rules are to be conducted. In the paper are presented preliminary analysis of some bunches of data collected from two bulk carriers, operating in similar condition
  • Kotowicz, Janusz; Bartela, Łukasz; Michalski, Sebastian (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    In the paper the evaluation of applied solutions, as well as the operational parameters in context of achieved efficiency of steam cycle of a supercritical power plant was carried out. The analysis for the referred structure of a power plant was made. The thermodynamic computational model was created in GateCycle software. In the calculations, the basic assumption was the maintenance of constant gross power of power plant. For this purpose, in the model the flow of live steam entering steam cycle was changed. In the first step the assumptions for three cases of unit were determined. First of all, the variants differ from each other with live and reheated steam parameters. The parameters for the two examined cases can be regarded as possible to be currently achieved in a modern supercritical power plants, while the third case represents a perspective variant. Based on relevant data implemented into the computational model, the relevant results for quantities characterizing the operation of examined units were generated. Among others, in the analysis the values of following quantities were determined: steam cycle efficiency, gross overall efficiency and specific consumption of heat. In the paper the assumptions, as well as the results are shown in the form of tables. The conclusions from comparison of results for individual solutions are also formulate
  • Biały, Witold (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    Using the example of one section of a railway line, the effect of various factors on breaks in train service has been analysed. The types, number and duration of breakdowns, as well as their influence on both passenger and goods trains service have been specified. The traffic capacity of a railway line is related to the possibility of meeting the timetable, which is therefore affected by all breaks. It is very important to know the type of breakdowns, their number and influence on a railway line capacity as well as their causes
  • Niziołek, Konrad; Boczkowska, Katarzyna (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    This paper presents a part of the results of the research carried out by its authors in the framework of a research project “Analysis and evaluation of the level of adjustment of entrepreneurs and OSH specialists from the region of Łódź to the changes in legal provisions and in market needs”. In the framework of the project 200 OSH specialists professionally active in the region of Łódź were interviewed. The evaluation of the level of knowledge of OSH specialists and the analysis whether or not there are any differences in it depending on the level on which they obtained their vocational qualifications, on a secondary or on a tertiary level, was the main aim of this analysis
  • Biały, Witold; Bujanowska, Anna (Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie, 2012)
    The infrastructure management of the hospital requires apart from typical conditioning associated with managing a property, taking into account requirements put for individuals of the health care which medical technologies are being exploited. In the article a specificity of the technical infrastructure of the hospital was described, as well as problems resulting from the completion of processes of the infrastructure management were identifie

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