Rok 2016

• THE APPLICATION OF KALMAN FILTERING TO PREDICT VERTICAL RAIL AXIS DISPLACEMENTS OF THE OVERHEAD CRANE BEING A COMPONENT OF SEAPORT TRANSPORT STRUCTURE

  Publikacja

  • D. Filipiak-Kowszyk
  • W. Kamiński

  - Polish Maritime Research - Rok 2016

  As the devices designed to transport materials, the overhead cranes should meet certain geometric requirements for their operation to be safe. The presently available geodetic equipment, in particular total stations, provides opportunities for precise 3D measurements of coordinates of the controlled points. These coordinates make a basis for correcting the height of crane runway axes. The paper presents a method to calculate position...

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• STUDY OF SEASONAL ACOUSTIC PROPERTIES OF SEA WATER IN SELECTED WATERS OF THE SOUTHERN BALTIC

  Publikacja

  • G. Grelowska

  - Polish Maritime Research - Rok 2016

  Climate Research of the globe is a current task, in particular to confirm the general hypothesis of global warming associated with an increase in average temperature. The sea acoustic climate is derived from the concept of climate and refers to the conditions of propagation of acoustic waves in a particular basin. In this paper, the results of systematic measurements of temperature, salinity and velocity distributions of sound...

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Rok 2019

• The Analysis of Overall Ship Fuel Consumption in Acceleration Manoeuvre using Hull-Propeller-Engine Interaction Principles and Governor Features

  Publikacja

  • H. Zeraatgar
  • M. H. Ghaemi (dawniej: M. Ghaemi)

  - Polish Maritime Research - Rok 2019

  The problem of reduction of greenhouse gas emissions in shipping is currently addressed by many research works and related industries. There are many existing and visionary technologies and ideas, which are conceptually defined or practically realised. This goal can be achieved in different ways, and reducing fuel consumption is one of the major methods. In these circumstances, the aim of this study is to analyse the possibility...

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• Structural Reliability Assessment Of Corroded Tanker Ship Based On Experimentally Estimated Ultimate Strength

  Publikacja

  • K. Wołoszyk
  • Y. Garbatov

  - Polish Maritime Research - Rok 2019

  This work deals with the reliability assessment of a tanker ship hull structure subjected to a vertical bending moment and corrosion degradation. The progressive collapse and ultimate load carrying capacity are estimated based on experimentally tested scaled box-shaped-specimens. The translation of the strength estimate of the scaled specimen to the real tanker ship hull structure is performed based on the dimensional theory developing...

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• Stability Analysis of the Floating Offshore Wind Turbine Support Structure of Cell Spar Type During its Installation

  Publikacja

  • P. Dymarski
  • C. Dymarski
  • E. Ciba

  - Polish Maritime Research - Rok 2019

  The article presents the results of selected works related to the wider subject of the research conducted at the Faculty of Ocean Engineering and Ship Technology of the Gdansk University of Technology, which concerns design and technology of construction, towing, and settlement on the seabed, or anchoring, of supporting structures for offshore wind farms. As a result of this research, several designs of this type of objects were...

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• SPECTRAL DYNAMIC ANALYSIS OF A STATIONARY JACK-UP PLATFORM

  Publikacja

  • B. Rozmarynowski

  - Polish Maritime Research - Rok 2019

  The paper refers to the dynamic short-term response analysis of the Baltic steel drilling platform (see Fig.2) in a random sea-state represented by one-dimensional wave spectrum proposed by Striekalov and Massel and it is recommended for the Baltic Sea area. The Baltic drilling platform is a jack-up type platform for the exploration and exploitation of oil under the Baltic Sea. The analysis presented deals with the stationary...

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• Selected Problems of Experimental Testing Marine Stern Tube Bearings

  Publikacja

  • A. Barszczewska
  • E. Wojtowicz (dawniej: E. Piątkowska)
  • W. Litwin

  - Polish Maritime Research - Rok 2019

  This paper presents typical methods for conducting experimental tests on main shaft slide bearings. There are described their possible testing capabilities, advantages, drawbacks and limitations. Various testing methods were analyzed to find a solution able of providing a wide range of possible investigations at possibly acceptable limitations.

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• Selected Issues of Hybrid Outboard Motors

  Publikacja

  • W. Leśniewski

  - Polish Maritime Research - Rok 2019

  The aim of the research reported in the article was designing a hybrid drive system based on an outboard internal combustion engine offered by a selected producer and testing its operating characteristics. The article presents different designs of this type of drive which can be found in the literature and are available in the market. The designed hybrid outboard drive system was tested both on the laboratory test rig and in real...

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• Robust Model Predictive Control for Autonomous Underwater Vehicle–Manipulator System with Fuzzy Compensator

  Publikacja

  • H. Nejatbakhsh Esfahani

  - Polish Maritime Research - Rok 2019

  This paper proposes an improved Model Predictive Control (MPC) approach including a fuzzy compensator in order totrack desired trajectories of autonomous Underwater Vehicle Manipulator Systems (UVMS). The tracking performancecan be affected by robot dynamical model uncertainties and applied external disturbances. Nevertheless, the MPCas a known proficient nonlinear control approach should be improved by the...

• Robust Model Predictive Control for Autonomous Underwater Vehicle – Manipulator System with Fuzzy Compensator

  Publikacja

  • H. Nejatbakhsh Esfahani

  - Polish Maritime Research - Rok 2019

  This paper proposes an improved Model Predictive Control (MPC) approach including a fuzzy compensator in order to track desired trajectories of autonomous Underwater Vehicle Manipulator Systems (UVMS). The tracking performance can be affected by robot dynamical model uncertainties and applied external disturbances. Nevertheless, the MPC as a known proficient nonlinear control approach should be improved by the uncertainty estimator...

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• REVIEW OF WEATHER FORECAST SERVICES FOR SHIP ROUTING PURPOSES

  Publikacja

  • M. Życzkowski
  • J. Szłapczyńska
  • R. Szłapczyński

  - Polish Maritime Research - Rok 2019

  Weather data is nowadays used in a variety of navigational and ocean engineering research problems: from the obvious ones like voyage planning and routing of sea-going vessels, through the analysis of stability-related phenomena, to detailed modelling of ships’ manoeuvrability for collision avoidance purposes. Apart from that, weather forecasts are essential for passenger cruises and fishing vessels that want to avoid the risk...

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Rok 2007

• The analysis of hydrodynamic forces and shape of towrope for an underwater vehicle

  Publikacja

  • J. Bielański

  - Polish Maritime Research - Rok 2007

  Opisano metodę obliczania sił hydrodynamicznych oraz kształtu liny holującej pojazd podwodny pod wpływem sił indukowanych przez opływ wody wokół liny i pojazdu. Siły indukowane na linie obliczane są za pomocą równania Morison'a, natomiast siły i momenty na kadłubie pojazdu za pomocą współczynników sił hydrodynamicznych, zależnych od kątów natarcia i prękości holowania pojazdu. Przykłady obliczeń dla pojazdu podwodnego zostały wykonane...

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• Searching for objects under the sea bed bythe acoustic method

  Publikacja

  • E. Kozaczka

  - Polish Maritime Research - Rok 2007

  Opisano metodykę poszukiwania przedmiotów zamulonych w morzu z zastosowaniem metod akustycznych.

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• Ring thruster - a preliminary optimisation study of ferrofluid seal and propeller

  Publikacja

  • L. Matuszewski
  • Z. Szydło

  - Polish Maritime Research - Rok 2007

  The article reports the course of preliminary examination of a ferrofluid seal applied in liquid environment.A newly built research rig is described, and results of pressure tests performed for different shaft rotationsare discussed. Other studies carried out in the past only referred to the gas environment, while the presentexamination aims at finding an answer to the question whether magnetic liquids can be successfully used...

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Rok 2006

• Tests of local strains in steel laser - welded sandwich structure

  Publikacja

  • D. Boroński
  • J. Szala

  - Polish Maritime Research - Rok 2006

  W publikacji zaprezentowano rezultaty badań odkształceń w strefie spoiny laserowej konstrukcji sandwich. Pokazano obiekt badań, metodykę i oprzyrządowanie oraz proces rejestracji. Przedstawiono uzyskane wyniki i wnioski z nich wypływające.

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• Strength assessment of a version of joint of sandwich panels

  Publikacja

  • R. Pyszko

  - Polish Maritime Research - Rok 2006

  W pracy przedstawiono propozycję optymalizacji wariantu połączenia doczołowego stalowych paneli typu ''sandwich''. Przedstawiono wyniki analizy numerycznej rozkładów naprężeń dla wielu wariantów geometrii proponowanego połączenia.

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• Selected problems of technological preparation of production of a two-segment passenger inland waterways ship of a combined structure

  Publikacja

  • Z. Górski
  • R. Pyszko

  - Polish Maritime Research - Rok 2006

  Przystępując do opracowania założeń do ''Ramowej technologii budowy statku rzecznego'', którego projekt powstaje w ramach zadania INCOWATRANS natknięto się na szereg problemów wynikających z odmienności i prototypowości analizowanego statku. Statek rzeczny to składajacy się z dwóch autonomicznych jednostek zespół pływający. Konstrukcja każdej z wymienionych jednostek jest konstrukcją mieszaną tj. składa się z części o konstrukcji...

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• Scale effects in cavitation experiments with marine propeller models

  Publikacja

  • J. Szantyr

  - Polish Maritime Research - Rok 2006

  Praca zawiera przegląd specyficznych efektów skali występujących w badaniach kawitacyjnych modeli śrub okrętowych oraz analizę ich wpływu na prognozowane osiągi śrub okrętowych w skali rzeczywistej.

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• Sandwich panels in shipbuilding

  Publikacja

  • B. Metschkow

  - Polish Maritime Research - Rok 2006

  W publikacji przedstawiono charakterystykę i podstawowe własności nowego tworzywa dla konstrukcji statku jakim są stalowe, spawane laserowo panele typu sandwich. Omówiono podstawowe zalety nowego typu konstrukcji, przedstawiono problemy wynikające z jej stosowania.

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Rok 2018

• TESTING CONTRACTION AND THERMAL EXPANSION COEFFICIENT OF CONSTRUCTION AND MOULDING POLYMER COMPOSITES

  Publikacja

  • Ł. Pyrzowski

  - Polish Maritime Research - Rok 2018

  The paper presents results of systematic tests of contraction and thermal expansion coefficients of materials based on polymer composites. The information on the above material properties is essential both at the design stage and during the use of finished products. Components for the samples were selected in such a way as to represent typical materials used for production of construction and moulding elements. The performed tests...

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• Simulation of Life Raft Motions on Irregular Wave - An Analysis of Situations Leading to Raft Capsizing

  Publikacja

  • O. Kazimierska

  - Polish Maritime Research - Rok 2018

  Successful rescue action at sea is based on a. o. a correct choice of rescue means and their reliability. Operational characteristics of life-saving appliances determine their performance in a given water area. Therefore they affect duration time of rescue action and decide this way on survival time of shipwrecked persons. This paper presents impact of characteristics of circular inflatable life rafts on their dynamics in a...

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• Simple Computational Methods in Predicting Limit Load of High-Strength Cold-Formed Sections due to Local Buckling: A Case Study

  Publikacja

  • P. M. Bielski
  • L. Samson
  • O. Wysocki
  • J. Czyżewicz

  - Polish Maritime Research - Rok 2018

  Cold-formed thin-walled sections are prone to local buckling caused by residual stresses, geometrical imperfections and inconsistency of material properties. We present a real case of buckling failure and conduct a numerical and experimental study aimed to identify methods capable of predicting such failures. It is important because designers of structures are getting more FEA-oriented and tend to avoid lengthy procedures of cold-formed...

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• Selection of main engines for hopper suction dredgers with the use oobability models

  Publikacja

  • D. Bocheński

  - Polish Maritime Research - Rok 2018

  This paper presents a new original method of selection of main engines for hopper suction dredgers with regard to probabilistic models. It was proposed to use the normal distribution to describe the operational loads of the main receivers. The principles for determination of parameters of load distribution and design power of the main engines were formulated. Lastly, the principles of selection of the size and number of main engines...

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• Selected problems of sensitivity and reliability of a jack-up platform

  Publikacja

  • B. Rozmarynowski
  • T. Mikulski

  - Polish Maritime Research - Rok 2018

  The paper deals with sensitivity and reliability applications to numerical studies of an off-shore platform model. Structural parameters and sea conditions are referred to the Baltic jack-up drilling platform. The study aims at the influence of particular basic variables on static and dynamic response as well as the probability of failure due to water waves and wind loads. The paper presents the sensitivity approach to a generalized...

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• SELECTED COMBINED POWER SYSTEMS CONSISTED OF SELFIGNITION ENGINE AND STEAM TURBINE

  Publikacja

  • W. Olszewski
  • M. Dzida

  - Polish Maritime Research - Rok 2018

  This paper presents optimization of selected combined diesel engine-steam turbine systems. Two systems: the system combined with waste heat one-pressure boiler only and its version containing additionally low-pressure boiler proper feeding degasifier and the system of two-pressure cycle, were taken into considerations. Their surplus values of power output and efficiency associated with utilization of waste heat contained in piston...

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Rok 2021

• TEST METHOD FOR DETERMINING THE CHEMICAL EMISSIONS OF A MARINE DIESEL ENGINE EXHAUST IN OPERATION

  Publikacja

  • Z. Korczewski

  - Polish Maritime Research - Rok 2021

  The article briefly describes the problem of air pollution caused by sea-going ships and the resulting restrictions on the emission of toxic and harmful chemical compounds in the exhaust of marine engines, introduced by the International Maritime Organization (IMO) under the International Convention for the Prevention of Sea Pollution from Ships (MARPOL 73/78). Such emissions provide a significant metrological problem, not only...

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• STUDY OF ARRAY OF MEMS INERTIAL MEASUREMENT UNITS UNDER QUASI-STATIONARY AND DYNAMIC CONDITIONS

  Publikacja

  • J. Demkowicz
  • K. Bikonis

  - Polish Maritime Research - Rok 2021

  A measurement system includes all components in a chain of hardware and software that leads from a measured variable to processed data. In that context, the type and quality of the sensors or measuring devices are critical to any measurement system. MEMS/IMU sensors lag behind leading technologies in this respect, but the MEMS/IMU performance rapidly changes while is relatively inexpensive. For this reason, the paper proposes...

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• SPECTRAL RESPONSE OF STATIONARY JACK-UP PLATFORMS LOADED BY SEA WAVES AND WIND USING PERTURBATION METHOD

  Publikacja

  • B. Rozmarynowski
  • W. Jesien

  - Polish Maritime Research - Rok 2021

  The paper addresses non-linear vibrations of offshore jack-up drilling platforms loaded by sea waves and wind in their stationary condition using the perturbation method. Non-linearity of dynamic equations of motion for fixed offshore platforms yields from two factors. The first is load excitation generating non-linear velocity coupling in a dynamic system. This coupling is inherent in the modified Morison equation, involving the...

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Rok 2017

• Technology Concept of TLP Platform Towing and Installation in Waters with Depth of 60 m

  Publikacja

  • C. Dymarski
  • P. Dymarski
  • J. Żywicki

  - Polish Maritime Research - Rok 2017

  The article is part of the design and research work conducted at the Gdansk University of Technology, Faculty of Ocean Engineering and Ship Technology, in cooperation with a number of other research centres, which concerns offshore wind farms planned to be built in the Polish zone of the Baltic sea in the next years. One of most difficult tasks in this project is building suitable foundations for each power unit consisting of a...

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• Technical State Assessment of Charge Exchange System of Self-Ignition Engine, Based On the Exhaust Gas Composition Testing

  Publikacja

  • J. Rudnicki
  • R. Zadrąg

  - Polish Maritime Research - Rok 2017

  This paper presents possible use of results of exhaust gas composition testing of self - ignition engine for technical state assessment of its charge exchange system under assumption that there is strong correlation between considered structure parameters and output signals in the form of concentration of toxic compounds (ZT) as well as unambiguous character of their changes. Concentration of the analyzed ZT may be hence considered...

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• Technical monitoring system for a new part of Gdańsk Deepwater Container Terminal

  Publikacja

  • M. Miśkiewicz
  • Ł. Pyrzowski
  • K. Wilde
  • O. Mitrosz

  - Polish Maritime Research - Rok 2017

  Development strategy for the port of Gdańsk assumes that , up to 2027, it will become the main transport centre in the Baltic Sea region. To this end , for many years work has been carried out to facilitate access to the port both by sea and land. One of the elements of extension of the port is the building of another terminal of Deepwater Container Terminal , Gdańsk. In this task, geotechnical operations aimed at appropriate...

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• Strength analysis of a large-size supporting structure for an offshore wind turbine

  Publikacja

  • K. Niklas

  - Polish Maritime Research - Rok 2017

  The offshore wind power industry is the branch of electric energy production from renewable sources which is most intensively developed in EU countries. At present, there is a tendency to install larger-power wind turbines at larger distances from the seashore, on relatively deep waters. Consequently, technological solutions for new supporting structures intended for deeper water regions are undergoing rapid development now. Various...

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• Simulation studies into quayside transport and storage yard operations in container terminals

  Publikacja

  • M. Deja
  • M. Dobrzyński
  • M. Siemiątkowski
  • A. T. Wiśniewska

  - Polish Maritime Research - Rok 2017

  The focus of the paper is on quayside transport and storage yard operations in the sea container terminals. Developed algorithms for solving the issues of load handling and storage space allocation have been applied in the frame of adopted simulation model. The criteria chosen for decision making involved the total makespan of vessel unloading and the utilisation levels of the transportation trucks. Recommendations for unloading...

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• Selected Problems of Transport in Port Towns – Tri-City as an Example

  Publikacja

  • M. Budzyński
  • D. Ryś
  • W. Kustra

  - Polish Maritime Research - Rok 2017

  Port towns are strategic places from the point of view of transport systems. They form integration junctions for various transport branches , apart from the traditional - road and railway ones , also for water( sea) transport which is active there. Moreover, air transport comes also into consideration , whose efficient functioning must be connected with good accessibility, that concerns sea transport as well. Efficient and...

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• Searching for Critical Conditions During Lifeboat Launching – Simulations

  Publikacja

  • C. Dymarski
  • P. Dymarski
  • A. Kniat

  - Polish Maritime Research - Rok 2017

  The article describes numerical simulations of the process of lifeboat launching at the ship’s side. The research is aimed at finding the values of ship motion parameters which appear to be most dangerous for people in the lowered lifeboat due to the generated accelerations. The simplified model of ship hull motion adopted at this research stage bases on a superposition of harmonic motions with given amplitudes and periods in six...

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Rok 2009

• Supporting Navigator's Decisions By Visualizing Ship Collision Risk

  Publikacja

  • R. Szłapczyński
  • R. Śmierzchalski

  - Polish Maritime Research - Rok 2009

  W artykule wprowadzono metodę wizualizacji, która umożliwia nawigatorowi oszacowanie ryzyka kolizji i (w razie konieczności) wybór manewru antykolizyjnego. Metoda jest oparta na wcześniejszej metodzie CTPA, uwzględnia dowolną zadaną domenę statku i jest wystarczająco szybka do zastosowania w okrętowych systemach wspierania decyzji nawigatora.

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• Specificity of automatic control of micro-turbines (steam or gas -driven and expanders) in dispersed generation system of heat and electric power

  Publikacja

  • Z. Domachowski

  - Polish Maritime Research - Rok 2009

  This paper presents specific problems of automatic control of steam micro-turbines and expanders intended for the dispersed, combined generating of heat and electric power. The investigations concern ensurance of certainty of energy supply and its required quality.

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• Self-organizing wireless monitoring system for cargo containers

  Publikacja

  • R. Katulski
  • J. Sadowski
  • J. Stefański
  • S. J. Ambroziak (dawniej: S. Ambroziak)
  • B. Miszewska

  - Polish Maritime Research - Rok 2009

  This paper presents a description of new global monitoring system for containers with its layer-modular structure, as a solution for enhance security and efficiency of container transport with particular emphasis on the practical implementation of that system for maritime container terminals. Especially the Smart Container Module (SCM) architecture and its operation as a part of the Self-Organizing ContainerMonitoring Network is...

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• Selected problems on application of steel sandwich panels to marine

  Publikacja

  • J. Kozak

  - Polish Maritime Research - Rok 2009

  W pracy przedstawiono wybrane problemy stosowania stalowych laserowo spawanych paneli w konstrukcji statku. Problemy te wynikają ze specyfiki cienkiej, spawanej laserowo konstrukcji stalowej i obejmują szerokie spektrum zagadnień począwszy od własności wytrzymałościowychy elementarnego połączenia teowego spawanego laserowo poprzez łączenie paneli ze sobą a skończywszy na integracji paneli z konstrukcją tradycyjną.

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• Selected problems of determining an efficient operation standard in contemporary heat-and-flow diagnostics

  Publikacja

  • J. Głuch

  - Polish Maritime Research - Rok 2009

  W referacie wymieniono przyczyny powodujące niejednoznaczności i trudności wyznaczania wzorca sprawnej pracy turbinowych siłowni lądowych i morskich. Przeanalizowano dwie z tych przyczyn: obniżenie wartości parametrów dolotowych czynników roboczych oraz zmiany w konfiguracji połączeń pomiędzy urządzeniami składowymi obiegów cieplnych. Jako remedium na wynikające stąd trudności zaproponowano model obliczeniowy obiegu cieplnego o...

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• Ring thruster - a preliminary optimisation study

  Publikacja

  • L. Matuszewski

  - Polish Maritime Research - Rok 2009

  The ring thruster is a new type of propeller, for which there is no experimental data to verify analytical design calculations. A significant feature of the ring thruster is the absence of a shaft. Propeller blades are mounted to the ring rotating inside the housing, which has the shape of a nozzle. For this reason the ring thruster is closest, with respect to both the construction and principle of operation, to the Kort nozzle...

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Rok 2010

• State equations in the mathematical model of dynamic behaviour of multihull floating unit

  Publikacja

  • A. Królicka-Gałązka (dawniej: A. Królicka)

  - Polish Maritime Research - Rok 2010

  Przedstawiony artykuł dotyczy dynamiki wielokadłubowej jednostki pływającej typu katamaran poddanej wymuszeniom pochodzącym od falowania nieregularnego. Analiza dynamiki jednostki wielokadłubowej została przeprowadzona przy założeniu, że model układu jest modelem liniowym na który działa fala nieregularna. Model matematyczny takiego układu dynamicznego jest reprezentowany poprzez równania stanu. Zapisane zostały równania uwzględniające...

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Rok 2002

• Spectral criterion of infinite fatigue life of beams under combined random loads

  Publikacja

  • J. Kolenda

  - Polish Maritime Research - Rok 2002

  Rozpatrywana jest trwałość zmęczeniowa belek poddanych zmiennym obciążeniom osiowym, giętnym i skrętnym o znanych gęstościach widmowych mocy i zerowych wartościach średnich. Założono, że materiał posiada granicę zmęczenia i jest zgodny z modelem Kelvina-Voigta, oraz że składowe naprężenia są stacjonarne, stacjonarnie skorelowane i różniczkowalne w sensie średniokwadratowym. Zdefiniowano naprężenie równoważne i sformułowano kryterium...

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Rok 2008

• Simulation of damage process of containership's side structure due to collision with a rock

  Publikacja

  • G. Porembski
  • J. Kozak

  - Polish Maritime Research - Rok 2008

  W artykule przedstawiono wyniki uproszczonego modelowania numerycznego procesu kolizji burty kontenerowca ze skałą. Analiza wyników modelowania pozwala wyciągnąć wnioski o charakterze zjawiska jak również określić obszar i głębokość uszkodzenia wywołanego przez penetrującą skałę w celu doboru wymiarów geometrii i wypełniacza dla drugiej bariery ochronnej.

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• Search for optimum geometry of selected steel sandwich panel joints

  Publikacja

  • K. Niklas

  - Polish Maritime Research - Rok 2008

  Zastosowanie stalowych paneli typu sandwich w konstrukcjach okrętowych wymaga rozwiązania wielu problemów. Jednymi z trudniejszych zagadnień związanych z tymi nowymi strukturami są połączenia pomiędzy panelami oraz między panelami i konstrukcją innego typu. Artykuł przedstawia poszukiwanie optymalnej geometrii połączenia typu panel-panel w układzie wzdłużnym, przy użyciu parametrycznego modelu w programie ANSYS. Poszukiwano konfiguracji...

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• Results of acoustic emission tests of corrosion protection degree of ship steel tanks covered by means of protective coatings (Phase I)

  Publikacja

  • H. Bugłacki
  • P. Eichert

  - Polish Maritime Research - Rok 2008

  This paper presents methods and results of the 1st series of tests of acoustic emission (AE) signals, aimed at assessing degree of corrosion protection of a tank made of hull structural steel, protected by means of a protective coating combined from polyurethane layer and concrete filler. The tests were carried outin compliance with a method specially elaborated for application to the work in question. In the method were used requirements...

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Rok 2020

• SHORT REVIEW AND 3-D FEM ANALYSIS OF BASIC TYPES OF FOUNDATION FOR OFFSHORE WIND TURBINES

  Publikacja

  • P. Iwicki
  • J. Przewłócki

  - Polish Maritime Research - Rok 2020

  Some problems of the foundations of offshore wind turbines are considered in this paper. A short review is presented on the two basic types of foundations, i.e. monopiles and gravity foundations, including their basic features and applications as well as general design considerations. Also, some issues regarding analysis are discussed, including geotechnical problems and modelling techniques. A numerical model of offshores turbine...

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• SAILING ROUTE PLANNING METHOD CONSIDERING VARIOUS USER CATEGORIES

  Publikacja

  • M. Życzkowski

  - Polish Maritime Research - Rok 2020

  The article describes the methodology related to determining the multi-criteria routes for sailing ships. Details of sea area discretisation and discretisation of the description of the sailing vessel properties and manoeuvring principles are shown. User requirements were specified (for five different categories of users) and on this basis the criteria for selecting the most suitable shipping route were formulated. The presented...

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Rok 2003

• Ship roll damping moments

  Publikacja

  • W. Błocki

  - Polish Maritime Research - Rok 2003

  Wprowadzono nieliniową formę współczynnika tłumienia kołysań bocznych statku oraz jego ekwiwalentną liniową formę. Zastępczy liniowy współczynnik tłumienia może być określony na podstawie kołysań. Przedstawiono przykładowe wyniki nieliniowego współczynnika tłumienia dla promu pasażerskiego "Polonia".

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Rok 2023

• ROLE OF GREEN LOGISTICS IN THE CONSTRUCTION OF SUSTAINABLE SUPPLY CHAINS

  Publikacja

  • N. D. K. Pham
  • G. H. Dinh
  • H. T. Pham
  • J. Kozak
  • P. N. Hoang

  - Polish Maritime Research - Rok 2023

  The global supply chain has been growing strongly in recent years. This development brings many benefits to the economy, society, and human resources in each country but also causes a large number of concerns related to the environment since traditional logistics activities in the supply chain have been releasing significant amount of emissions. For that reason, many solutions have been proposed to deal with these environmental...

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