2019 - Repozytorium publikacji - Politechnika Gdańska

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Publikacje z roku 2019

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The effect of laser on metal surfaces for multidisciplinary usage in material and thermal engineering
- Ewa Kozłowska
2019 Pełny tekst
The subject of heat transfer and cooling systems is still a matter of contention in many different fields of science and industry. Infrigidation is much more difficult than warming, and so, much more needed in more and more different devices, starting from massive industrial machinery and air conditioning in commercial buildings, up to micro and nano-surgery tools. In fact, the size of many cooling systems is still a problem. It needs to be minimized in order to make these systems more suitable for small devices and limited usable space. Using laser to modify metal’s surface is supposed to increase the heat change capacity and efficiency.
The effect of nitrogen on the structure and thermal properties of beryllium-containing Na-(Li)-Si-O-N glasses
- Natalia Wójcik
- B Jonson
- D Möncke
- E Kamitsos
- H Segawa
- Jakub Karczewski
- S Ali
2019 Pełny tekst JOURNAL OF NON-CRYSTALLINE SOLIDS
Two oxynitride glass series with the composition of 35Na2O-5BeO-(60-x)SiO2-xSi3N4 and 9Li2O- 27Na2O-5BeO-(59-x)SiO2-xSi3N4, were prepared. The glasses' topography and structure were studied by Scanning Electron Microscopy and Raman spectroscopy. The composition was analyzed by Inductively Coupled Plasma Optical Emission Spectrometer, SEM-EDS and nitrogen and oxygen elemental analyzer. Na-(Li)-Be-silicate glasses were found to contain up to approximately 3.4 (or 5.2 for EDS measurements) at.% of N, respectively. The samples were homogenous in their topography and compositions of their cross-sections. The presence of three-fold coordinated nitrogen atoms in Na-Be-Si-O-N glasses results in higher degree of polymerization as was observed by Raman spectroscopy. The spectrum of analogous glasses with lithium did not show a significant decrease in Q2 units but exhibit the presence of Q4 units which also indicates a polymerization of the network. The incorporation of nitrogen in these glasses leads to the increase of the glass transition temperature and thermal stability.
The Effect of Online Reviews on Consumer-Based Brand Equity: Case-Study of the Polish Restaurant Sector
- Magdalena Brzozowska-Woś
- Bruno Schivinski
2019 Pełny tekst Central European Management Journal
Purpose: This paper focuses on the effects of positive and negative online reviews (eWOM) on the metrics of consumer-based brand equity (CBBE) in the context of the Polish restaurant sector. Methodology: The dedicated online survey was completed by 777 consumers, which we then analyzed with structural equation modeling. Each catering outlet was to allow to order meals online. We used descriptive analysis, confirmatory factor analysis, and path analysis to test the hypotheses. Findings: The findings suggest that positive online reviews affect each CBBE variable in the online catering outlet’s context. In the case of known catering establishment’s offering in the option of placing orders via online platforms, negative eWOM only affects the perceived quality and brand loyalty. However, it does not change brand awareness and brand association. Implications: This paper contributes to the body of literature on eWOM, which to date offers very little understanding of the topic of positive and negative online reviews and CBBE dimensions. Moreover, in terms of practical and managerial applications, this study can be used to delineate strategy in terms of management of eWOM to optimize brand strategies.
The Effect of Polyurethane Glycolysate on the Structure and Properties of Natural Rubber/Carbon Black Composites
- Marcin Włoch
- Urszula Ostaszewska
- Janusz Datta
2019 Pełny tekst JOURNAL OF POLYMERS AND THE ENVIRONMENT
In this work the use of polyurethane chemical recycling product (i.e. glycolysis of polyurethane waste realized with the mass excess of polymer) as a plasticizer for natural rubber-based composites was proposed. The effect of plasticizer type (napthenic oil and polyurethane foam glycolysate) and amount (2, 4, 6 or 8 parts per 100 parts of natural rubber) on the processing properties of rubber mixtures and chemical structure, swelling, mechanical and thermo-mechanical properties of natural rubber/carbon black composites was investigated. The effect of applied plasticizer was studied in the context of accelerated thermal aging (thermo-oxidative aging) which was applied for the prepared natural rubber-based composites. The obtained results confirm that the polyurethane foam glycolysate can be successfully used as a plasticizer for the preparation of natural rubber composites. Moreover, it was found that glycolysate acts as a vulcanization accelerator and reduces decreasing of mechanical properties during the accelerated thermal aging.
The Effect of Surface Modification of Ti13Zr13Nb Alloy on Adhesion of Antibiotic and Nanosilver-Loaded Bone Cement Coatings Dedicated for Application as Spacers
- Magda Dziaduszewska
- Marcin Wekwejt
- Michał Bartmański
- Anna Pałubicka
- Grzegorz Gajowiec
- Tomasz Seramak
- Anna Maria Osyczka
- Andrzej Zieliński
2019 Pełny tekst Materials
Spacers, in terms of instruments used in revision surgery for the local treatment of postoperative infection, are usually made of metal rod covered by antibiotic-loaded bone cement. One of the main limitations of this temporary implant is the debonding effect of metal–bone cement interface, leading to aseptic loosening. Material selection, as well as surface treatment, should be evaluated in order to minimize the risk of fraction and improve the implant-cement fixation the appropriate manufacturing. In this study, Ti13Zr13Nb alloys that were prepared by Selective Laser Melting and surface treated were coated with bone cement loaded with either gentamicin or nanosilver, and the effects of such alloy modifications were investigated. The SLM-made specimens of Ti13Zr13Nb were surface treated by sandblasting, etching, or grounding. For each treatment, Scanning Electron Microscope (SEM), contact profilometer, optical tensiometer, and nano-test technique carried out microstructure characterization and surface analysis. The three types of bone cement i.e., pure, containing gentamicin and doped with nanosilver were applied to alloy surfaces and assessed for cement cohesion and its adhesion to the surface by nanoscratch test and pull-off. Next, the inhibition of bacterial growth and cytocompatibility of specimens were investigated by the Bauer-Kirby test and MTS assay respectively. The results of each test were compared to the two control groups, consisting of commercially available Ti13Zr13Nb and untreated SLM-made specimens. The highest adhesion bone cement to the titanium alloy was obtained for specimens with high nanohardness and roughness. However, no explicit relation of adhesion strength with wettability and surface energy of alloy was observed. Sandblasting or etching were the best alloys treatments in terms of the adhesion of either pure or modified bone cements. Antibacterial additives for bone cement affected its properties. Gentamicin and nanosilver allowed for adequate anti-bacterial protection while maintaining the overall biocompatibility of obtained spacers. However, they had different effects on the cement’s adhesive capacity or its own cohesion. Furthermore, the addition of silver nanoparticles improved the nanomechanical properties of bone cements. Surface treatment and method of fabrication of titanium affected surface parameters that had a significant impact on cement-titanium fixation.
THE EFFECT OF WOOD DRYING METHOD ON THE GRANULARITY OF SAWDUST OBTAINED DURING THE SAWING PROCESS USING THE FRAME SAWING MACHINE
- Kazimierz Orłowski
- Daniel Chuchała
- Tomasz Muziński
- Jacek Barański
- Adrian Banski,
- Tomasz Rogoziński
2019 Pełny tekst ACTA FACULTATIS XYLOLOGIAE ZVOLEN
The experimental results of the study focused on the effect of drying processes of warm air drying at the temperature of 6580°C and warm air-steam mixture drying at the temperature of 105°C of pine and beech wood to the size of sawdust grains created by cutting using RPW 15M frame saw is presented in the paper. Particle size analysis of dry sawdust was performed using two methods - screening method and optical method based on image analysis obtained from a microscope. The results showed that the drying mode did not affect the particle size distribution of the pine sawdust, but sawdust from beech wood dried with steam mixture at 105°C was characterized by finer particles.
The Effects of Roadside Hazards on Road Accident Severity
- Marcin Budzyński
- Kazimierz Jamroz
- Łukasz Jeliński
- Anna Gobis
2019 Pełny tekst Journal of KONBiN
The risk of becoming involved in an accident emerges when elements of the transport system do not operate properly (man – vehicle – road – roadside). The road, its traffic layout andsafety equipment have a critical impact on road user safety. This gives infrastructural work a priority in road safety strategies and programmes. Run-off-road accidents continue to be one of the biggest problems of road safety with consequences including vehicle roll-over or hitting a roadside object. This type of incident represents more than 20% of rural accidents and about 18% of all road deaths in Poland. Mathematical models must be developed to determine how selected roadside factors affect road safety and provide a basis for new roadside design rules and guidelines.
The effects of selected factors on regional road fatalities – analysis of the Łódź region
- Joanna Wachnicka
- Marcin Budzyński
- Wojciech Kustra
- Anna Gobis
2019 Pełny tekst MATEC Web of Conferences
Analysis of regional accident records shows that a country’s national road safety programme does not have the same effect in each of its regions. What may be a serious problem in one region may be of marginal significance in another. Polish and international experience shows that main risk groups and types of accidents related to the level of development and quality of the road network differ from region to region. The conclusion is that a centrally run road safety policy does not always produce the expected outcomes. This suggests that more can be achieved with a combination of strategic (national) road safety management and tactical (regional) and operational (local) road safety efforts. Poland’s regional road safety programmes were found to lack an analysis of the effects of selected factors on safety or fatality forecast based on mathematical models. This calls for a scientific tool to support regional road safety management. The article uses the example of the region of Łódź to present the main road safety problems, analyse safety based on risk assessment, present the effects of selected factors on road user safety and forecast fatalities for different scenarios of treatments.
The effects of vehicle restraint systems on road safety
- Marcin Budzyński
- Krzysztof Wilde
- Kazimierz Jamroz
- Jacek Chróścielewski
- Wojciech Witkowski
- Stanisław Burzyński
- Dawid Bruski
- Łukasz Jeliński
- Łukasz Pachocki
2019 Pełny tekst MATEC Web of Conferences
Key to understanding the needs and tools of road infrastructure management for preventing run-off-road crashes or minimising their consequences, is to identify the hazads and sources of hazards caused by wrong or improper use of road safety devices and identify errors in the desifn, structure, construction and operation of road safety devices. Studying such an extended scope of the problem required fieldwork and surveys with road authorities, designers, road safety auditors and road maintenance services. An outline of new quidelines could only be developed after understanding the effects of restraint systems, the design, additional elements, type of road and safety barrier location on a road or engineering structure and the road and traffic conditions on their functionality and safety. The paper will present the preliminary results of this research (research project - ROSE). One way to understand the functionality of road safety devices is to build numerical models and conduct sumulation tests of virtual crash tests. The article presents the scope of work conducted as part of an effort to develop new vehicle restraint system guidelines.
The efficiency and reliability of pollutant removal in a hybrid constructed wetland with giant miscanthus and Jerusalem artichoke in Poland
- Michał Marzec
- Magdalena Gizińska-Górna
- Krzysztof Jóźwiakowski
- Aneta Pytka-Woszczyło
- Alina Kowalczyk-Juśko
- Magdalena Gajewska
2019 Pełny tekst ECOLOGICAL ENGINEERING
In this paper, we analysed the pollutant removal efficiency and reliability of a vertical and horizontal flow hybrid constructed wetland (CW) planted with giant miscanthus and Jerusalem artichoke. The wastewater treatment plant, located in south-eastern Poland, treated domestic sewage at an average flow rate of 1.2m3·d−1. The tests were carried out during. 5-years of operation of the sewage treatment plant (2011–2016). During this period, sewage samples were collected from three stages of wastewater treatment in four seasons (winter – February, spring – May, summer – August, and autumn – November). The following parameters were measured: BOD5, COD, total suspended solids, total nitrogen, and total phosphorus. The average effectiveness of organic pollutant removal expressed by BOD5 and COD was 98.8 and 97.6%, respectively, and the removal efficiency for total suspended solids was 93%. The average values of BOD5, COD, and total suspended solids in wastewater discharged to the receiver were significantly lower than the limit values required in Poland. The efficiency of total nitrogen and total phosphorus removal was 64.1 and 68.1%, respectively, and the average values of these components in the outflow from the treatment plant exceeded the standard levels. A reliability analysis performed using the Weibull probability model showed that the reliability of pollutant removal in the tested CW system was very high for BOD5 and COD (100%). It was also demonstrated that the tested CW did not provide effective elimination of biogenic elements (nitrogen and phosphorus), as evidenced by the low reliability values – 32 and 28%, respectively. The investigated hybrid CW system with giant miscanthus and Jerusalem artichoke removed organic and biogenic pollutants with a similar efficiency as systems using classic plant species such as reed and willow.
The electronic characterization of the cubic Laves-phase superconductor CaRh2
- Karolina Górnicka
- Robert J. Cava
- Tomasz Klimczuk
2019 JOURNAL OF ALLOYS AND COMPOUNDS
We present the synthesis and experimental characterization of the electronic properties of the cubic Laves phase superconductor CaRh2. Its crystal structure was confirmed by powder X-ray diffraction and its ambient temperature lattice parameter (a = 7.5326(6) Å) is in good agreement with the literature. Magnetization, resistivity and heat-capacity measurements indicate that CaRh2 is a moderate-coupling type-II superconductor (λe-p = 0.89) with a transition temperature Tc = 5.13 K. A sharp discontinuity at Tc in the heat capacity shows that the normalized specific-heat jump is C/γTc = 1.78, which exceeds the value predicted by weak-coupling BCS theory (1.43).
The Emergence of ETFs in Asia-Pacific
- Ewa Lechman
- Adam Marszk
- Kato Yasuyuki
2019
The major objective of this book is to contribute to the present state of knowledge by exploring empirical links between the processes of diffusion of financial innovations— exchange-traded funds—and growing deployment of ICT across Asia-Pacific countries, between 2004 and 2017. We examine the evolutionary patterns of ETFs on selected Asia-Pacific stock exchanges and verify the hypothesized relationship between increasing ICT penetration and development of the ETFs markets. More specifically, this study is based on 12 economies from the Asia-Pacific region, namely, Australia, China, Hong Kong, India, Indonesia, Japan, Malaysia, New Zealand, Singapore, South Korea, Taiwan, and Thailand. We exhaustively discuss various issues related to ETFs, and, throughout the empirical parts of the book, we show their diffusion patterns on the selected financial markets in the Asia-Pacific region. In contrast with the existing literature, which concentrates mostly on the benefits and costs of ETFs for investors, we focus on the development of the ETFs markets (used as synonymous term to the diffusion of ETFs); thus we adopt a broader approach to the topic. Financial instruments used for comparison are innovative ones, i.e., ETFs, and conventional ones (more widely recognized and available for a much longer time period), i.e., stock index futures and stock index options. Next, to ensure a broad perspective for the analyzed process of development of financial innovations, we additionally provide the in-depth evidence on relationships between ICT penetration and diffusion of innovative financial instruments— ETFs, across countries in scope.
The Empirical Application of Automotive 3D Radar Sensor for Target Detection for an Autonomous Surface Vehicle’s Navigation
- Andrzej Stateczny
- Witold Kazimierski
- Daria Gronska-Sledz
- Weronika Motyl
2019 Pełny tekst Remote Sensing
Avoiding collisions with other objects is one of the most basic safety tasks undertaken in the operation of floating vehicles. Addressing this challenge is essential, especially during unmanned vehicle navigation processes in autonomous missions. This paper provides an empirical analysis of the surface target detection possibilities in a water environment, which can be used for the future development of tracking and anti-collision systems for autonomous surface vehicles (ASV). The research focuses on identifying the detection ranges and the field of view for various surface targets. Typical objects that could be met in the water environment were analyzed, including a boat and floating objects. This study describes the challenges of implementing automotive radar sensors for anti-collision tasks in a water environment from the perspective of target detection with the application for small ASV performing tasks on the lake.
The essence of marine and coastal space – an interdisciplinary perspective
- Katarzyna Jerzak
- Maxim D. Shrayer
- Karolina Krośnicka
- Piotr Lorens
- Jacek Zaucha
- Joanna Pardus
2019 Pełny tekst EUROPA XXI
Sea space has been undergoing a profound transformation. Although it retains its inspirational function in arts, literature and philosophy, it has been gaining new anthropogenic dimensions in eco-nomics and urban planning as a source of satisfying human needs i.e. the provision of harmony, beauty, off-shore energy, and biotech substances. Therefore, in this paper marine space is analyzed from a mul-tidimensional perspective of urban planning, economics, and literature. Maritime space has been a sub-ject of literature from its inception. Without attempting to give an overview of the vast topic, the paper discusses the pronounced presence of sea space in the earliest Western literary sources, such as the Bible and Anglo-Saxon poetry. As a striking case study, Herman Melville’s 1851 novel Moby-Dick is analyzed with its complex, dynamic notion of maritime space. Aditionally, the importance of the shore as locus amoenus in a short story by the contemporary writer Maxim D. Shrayer is examined. This notion of locus amoenus is also present in the research related to urban planning. Maritime space attracts people to lo-cate nearby. Development is created as a response to these demands. Both urban planning and economics underline, however, a need of sustainable development of this space. This is crucial in order to secure its positive influence on human well-being in the long run. The three disciplines also point out that maritime space remains in the process of continuous creation and re-development in course of adding new func-tional and axiological ties between humans and the seas and oceans. Thus, nowadays maritime space covers both sea and terrestrial gateways servicing the sea and the key constituting factor is provided by human beings (homo maritimus) through their economic, social or emotional bond to the sea.
The evaluation of COD fractionation and modeling as a key factor for appropriate optimization and monitoring of modern cost-effective activated sludge systems
- Jakub Drewnowski
- Anna Remiszewska-Skwarek
- Sylwia Fudala-Książek
- Aneta Łuczkiewicz
- Sheena Kumari
- Faizal Bux
2019 Pełny tekst JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
A study was conducted to characterize the raw wastewater entering a modern cost effective municipal WWTP in Poland using two approaches; 1) a combination of modeling and carbonaceous oxygen demand (COD) fractionation using respirometric test coupled with model estimation (RTME) and 2) flocculation/filtration COD fractionation method combined with BOD measurements (FF-BOD). It was observed that the particulate fractions of COD obtained using FF-BOD method was higher than those estimated by RT-ME approach. Contrary to the above, the values of inert soluble fraction evaluated by FF-BOD method was significantly lower than RT-ME approach (2.4% and 3.9% respectively). Furthermore, the values for low colloidal and particulate fractions as well as soluble inert fractions were different than expected from a typical municipal wastewater. These observations suggest that even at low load (10% of the total wastewater treatment inflow), the industrial wastewater composition can significantly affect the characteristics of municipal wastewater which could also affect the performance and accuracy of respirometric tests. Therefore, in such cases, comparison of the respirometric tests with flocculation/filtration COD/BOD measurements are recommended. Oxygen uptake rate profile with settled wastewater and/or after coagulation- flocculation, however, could still be recommended as a “rapid” control method for monitoring/optimising modern cost-effective wastewater treatment plants.
The experience of movement in the built form and space: A framework for movement evaluation in architecture
- Mosleh Ahmadi
- Margaret Schedel
2019 Pełny tekst Cogent Arts & Humanities
“Movement in architecture” is an organized system of various types of movements stimulated by specific architectural elements. This research was conducted through a qualitative-analytical method and empirical and bibliographical research methods with the aim to categorize different types of movements based on the explorer and observer relationships with the built space and form. So far, most of the related studies have focused on a few aspects of movement. In this article, the author tries not only to address circulation in architecture and visual movements but also the physiological psychology of motion, pictorial representation, and natural factors. The physical movement of built form and space is also considered more coherently and comprehensively, along with all stimulus factors and elements. Subsequently, this research presents a taxonomy in the form of an assessment table correlating with various types of movements along with their generator factors and architectural elements. The article conceptions are justified by a comparative analogy between two bridges: Khaju and Tabiat, representing 17th century and contemporary Iranian architecture, respectively.
The first study on the usefulness of recombinant tetravalent chimeric proteins containing fragments of SAG2, GRA1, ROP1 and AMA1 antigens in the detection of specific anti-Toxoplasma gondii antibodies in mouse and human sera
- Bartłomiej Ferra
- Lucyna Holec-Gąsior
- Justyna Gatkowska
- Bożena Dziadek
- Katarzyna Dzitko
- Weronika Grąźlewska
- Dariusz Lautenbach
2019 Pełny tekst PLOS ONE
This study presents an evaluation of four tetravalent recombinant chimeric proteins containing fragments of the Toxoplasma gondii antigens, SAG2, GRA1, ROP1 and AMA1, as potential replacements of a the soluble, whole-cell tachyzoite lysate (TLA) used in serological assays. Recombinant chimeric proteins (SAG2-GRA1-ROP1-AMA1N, AMA1N-SAG2-GRA1-ROP1, AMA1C-SAG2-GRA1-ROP1, and AMA1-SAG2-GRA1-ROP1) obtained by genetic engineering were tested for their reactivity with specific IgM and IgG antibodies from sera of experimentally infected mice and humans with T. gondii infection using an enzyme-linked immunosorbent assay (ELISA). In total 192 serum samples from patients with acquired T. gondii infection and 137 sera from seronegative individuals were examined. The reactivity of chimeric antigens with antibodies generated during T. gondii invasion was measured and compared to the results obtained in assays based on whole-cell Toxoplasma antigen. Chimeric proteins proved effective in differentiation between T. gondii-infected and uninfected individuals (100% sensitivity and specificity in the IgG ELISAs) which shows their potential usefulness as a replacements for TLA in standardized commercial tests for the serodiagnosis of toxoplasmosis. In addition, the chimeric proteins were tested for use in avidity determination. Obtained results were comparable to those of the corresponding commercial assays, suggesting the utility of these proteins for avidity assessment. Furthermore, this study demonstrated that the AMA1-SAG2-GRA1-ROP1 chimeric protein has the potential to distinguish specific antibodies from serum samples of individuals with the early and chronic phase of T. gondii infection.
The flux compression generator load parameters selection
- Mirosław Wołoszyn
- Daniel Kowalak
- Kazimierz Jakubiuk
- Mikołaj Nowak
2019 Pełny tekst ITM Web of Conferences
Computer simulation results of the flux compression generator (FCG) loaded with an inductor has been presented in this paper. Simulation research has been performed in order to select the parameters of FCG load coil properly. The influence of the load inductance and resistance on the current gain factor and the magnetic field energy accumulated in a load coil has been investigated.
The Handling of Business Lawsuits by Common Courts in Poland: Identification of Transaction Costs
- Przemysław Banasik
- Sylwia Morawska
- Woźniak-jęchorek Beata
2019 Pełny tekst Ekonomista
Celem artykułu jest identyfikacja czynników mających wpływ na koszty transakcyjne dochodzenia praw z umów pomiędzy przedsiębiorcami w sprawach gospodarczych. Na potrzeby artykułu przeprowadzono pilotażowe badanie 210 spraw sądowych zawisłych przed Sądem Okręgowym w Gdańsku w pierwszej instancji po 2009 r., w których wyrok wydano w 2012 r. (ostatnie 210 spraw) a od wyroku wniesiono apelację do Sądu Apelacyjnego w Gdańsku i zakończono postępowanie przed 2013 r. Badanie miało charakter studium przypadku, którego celem była identyfikacja czynników mających wpływ na koszty transakcyjne dochodzenia praw z umów po stronie podażowej, czyli w ramach działania sądów. Na koszty transakcyjne dochodzenia praw z umów składają się nie tylko koszty opłaty sądowej i zastępstwa procesowego, określone normatywnie, ale także - co jest oczywiste - czas niezbędny do wyegzekwowania praw wynikających z umowy. W badaniu podjęto próbę odpowiedzi na dwa pytania badawcze. Po pierwsze, które z czynników mają wpływ na czas rozpoznania sprawy, począwszy od jej wpływu do sądu pierwszej instancji aż do wydania wyroku w drugiej instancji, a po drugie - na ile poziom zawiłości sprawy przekłada się na czas rozpoznania sprawy. Wyniki badań pozwoliły na wstępne wyselekcjonowanie podstawowych czynników identyfikujących poziom skomplikowania sprawy. Autorzy artykułu przyjęli, że należą do nich: liczba tomów zgromadzonych w trakcie rozpoznania sprawy, liczba rozpraw oraz liczba stron uzasadnienia wyroku w pierwszej i drugiej instancji.
The Hough transform in the classification process of inland ships
- Katarzyna Bobkowska
- Natalia Wawrzyniak
2019 Pełny tekst Zeszyty Naukowe Akademii Morskiej w Szczecinie
This article presents an analysis of the possibilities of using image processing methods for feature extraction that allows kNN classification based on a ship’s image delivered from an on-water video surveillance system. The subject of the analysis is the Hough transform which enables the detection of straight lines in an image. The recognized straight lines and the information about them serve as features in the classification process. Above all, this approach allows ships to be recognized, which can then be characterized by a specific representation and shape. Recreational units that are often seen on inland waters were classified correctly using this method. Each analyzed camera image was previously prepared – brought to the form where the ship was visible from the side and the background removed (they were monochromatic – white). The results obtained in this work will allow for the development of the final ship classification method based on camera images. This method is a significant part of the emerging system prototype, which is implemented as part of the Automatic Ship Recognition and Identification (SHREC) project.