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    Tytuł:
    Consistently Trained Artificial Neural Network for Automatic Ship Berthing Control
    Autorzy:
    Ahmed, Y.
    Hasegawa, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/116809.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Port Maneuvres
    Artificial Neural Network (ANN)
    Automatic Ship Berthing Control
    Ship Berthing
    Automatic Ship Berthing
    Monte Carlo simulation
    Autonomous Underwater Vehicle (AUV)
    Teaching Data Creation
    Opis:
    In this paper, consistently trained Artificial Neural Network controller for automatic ship berthing is discussed. Minimum time course changing manoeuvre is utilised to ensure such consistency and a new concept named ‘virtual window’ is introduced. Such consistent teaching data are then used to train two separate multi-layered feed forward neural networks for command rudder and propeller revolution output. After proper training, several known and unknown conditions are tested to judge the effectiveness of the proposed controller using Monte Carlo simulations. After getting acceptable percentages of success, the trained networks are implemented for the free running experiment system to judge the network’s real time response for Esso Osaka 3-m model ship. The network’s behaviour during such experiments is also investigated for possible effect of initial conditions as well as wind disturbances. Moreover, since the final goal point of the proposed controller is set at some distance from the actual pier to ensure safety, therefore a study on automatic tug assistance is also discussed for the final alignment of the ship with actual pier.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 3; 417-426
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design and implementation of large vessel navigation system based on beidou cors
    Autorzy:
    Huang, P.
    Liu, Y.
    Du, Z.
    Chen, Q.
    Chen, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/260264.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    Berthing
    ship-based
    Polar Coordinates
    CORS
    Opis:
    The ship’s pilot can obtain the ship auxiliary information through the navigation system, when berthing system can display the parameters such as traverse speed and distance of the ship. But most of the system data show that there are insufficient precision. Taking the CORS system to obtain the location information, data Calculation of Berthing System based on Polar Coordinate Algorithm, this paper puts forward a solution to the “dead point” of the berthing and aiding system, which has a certain reference value for the design of the ship berthing assistance system.
    Źródło:
    Polish Maritime Research; 2017, S 3; 12-15
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identyfikacja rzeczywistego pola przepływu powstającego podczas cumowania pomiędzy statkiem i nabrzeżem
    Identification of a Real Flow Field Induced During Berthing Between a Ship and a Quay
    Autorzy:
    Abramowicz-Gerigk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/360177.pdf
    Data publikacji:
    2004
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    manewry portowe
    cumowanie statku
    opływ kadłuba statku
    badania w skali rzeczywistej
    EXPLO-SHIP 2004
    harbour manoeuvres
    ship berthing
    flow around the ship hull
    full scale measurements
    Opis:
    Podano stan wiedzy w zakresie opisu nieustalonego przepływu trójwymiarowego indukowanego podczas równoległego cumowania statku do nabrzeża. Przedstawiono wyniki pomiarów rzeczywistego pola prędkości, otrzymane podczas manewrów statku "Horyzont II" przeprowadzonych w porcie Gdynia. Na obecnym etapie badań posłużyły one do jakościowej oceny zjawisk decydujących o wielkości występujących sił hydrodynamicznych.
    The paper presents the state of art on three dimensional transient flows induced by a ship approaching a berthing structure. The results of full scale measurements of the velocity field obtained during the trials conducted in Gdynia Port with the motor ship "Horyzont II" are given. At the present stage of research the results of measurements have been used for the qualitative assessment of phenomena and making preliminary conclusions regarding the hydrodynamic forces.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2004, 2 (74); 11-20
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Innovative project of propellers and thrusters jet loads during ship berthing monitoring system
    Autorzy:
    Abramowicz-Gerigk, T.
    Burciu, Z.
    Hapke, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/117497.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    ship handling
    thruster
    propeller
    ship berthing
    monitoring system
    ship berthing monitoring system
    PIANC
    thrust stream
    Opis:
    The growing number of large high powered vessels operated in shallow water ports is the reason that port authorities and terminal operators are interested in online monitoring of loads generated by vessels during manoeuvers close to hydrotechnical constructions. The test version of the loads measurement system based on the mobile laboratory and commercial version of monitoring system based on the cloud technology are presented in the paper.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 4; 861-865
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigations on Container Ship Berthing from the Pilot’s Perspective: Accident Analysis, Ethnographic Study, and Online Survey
    Autorzy:
    Gruenefeld, U.
    Stratmann, T.C.
    Brueck, Y.
    Hahn, A.
    Boll, S.
    Heuten, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/116358.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    container ship
    ship berthing
    pilot’s perspective
    accident analysis
    ethnographic study
    online survey
    port operations
    Port of Hamburg
    Opis:
    In recent years, container ships have had to transport more and more goods due to constantly growing demand. Therefore, the container ships for carrying these goods are growing in size, while the harbors fall short in adapting to these changes. As a result, the berthing of these container ships in harbors has become more challenging for harbor pilots. In this work, we identify problems and risks with which pilots are confronted during the berthing process. First, we analyzed approximately 1500 accident reports from six different transportation safety authorities and identified their major causes. Second, we conducted an ethnographic study with harbor pilots in Hamburg to observe their actions. Third, we gained more specific insights on pilots environments and communications through an online survey of 30 harbor pilots from different European countries. We conclude our work with recommendations on how to reduce problems and risks during berthing of container vessels.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 3; 493-498
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mooring the Ferry m/f “Gryf” in Extreme Hydro and Meteorological Conditions
    Autorzy:
    Kowalski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/117595.pdf
    Data publikacji:
    2008
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Manoeuvring
    Mooring Operation
    Meteorological Conditions
    Port of Ystad
    Port of Swinoujscie
    Manoeuvring Situations
    Ferry
    Ship Berthing
    Opis:
    The paper introduces some possible manoeuvres of the ferry „Gryf” in difficult hydro and meteorological conditions, in which standard methods do not permit execution of mooring and unmooring. Brief characteristics of the ferry m/f „Gryf” have been presented. Typical and most often met extreme hydro and meteorological conditions have been described for ?winouj?cie and Ystad. Examplary techniques of manoeuvres have also been presented for both ports of operation.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 4; 383-386
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation for Service Quality and Berths Occupancy Assessment
    Autorzy:
    Kuznetsov, A.L.
    Kirichenko, A.V.
    Powiązania:
    https://bibliotekanauki.pl/articles/117027.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    port operations
    berths occupancy assessment
    service quality
    ship maneuvering
    ship handling
    simulation technique
    berthing
    object-oriented simulation
    Opis:
    Current development of the maritime transportation system, namely fleet and ports specialization, growth of vessel sizes, rationalization of routs, trade regionalization etc., has made many traditional approaches and calculation techniques practiced for many long years in port design procedures to be inadequate and insufficient. A generally acknowledged tool for this task today is the simulation technique. In the same time, modern object oriented simulation approach provides usually only ad hoc solution for a project. It lacks the generality that was the main and natural feature of its traditional analytical predecessors. Very high time and labor consumption of simulation comes to a conflict with a very narrow scope of the resulting model’s application domain. This paper describes a new approach used to create a simulation tool for the port designers and planners combining the universality and generality of the analytical (so called “static”) methods with the efficiency and accuracy of the object-oriented simulation. The concept represented in the paper was implemented in the software product, which enabled to conduct experiments that proved the validity and adequacy of the model. The simulation tool was used in several sea port design project and now is a common instrument of several leading port design and consulting company in Russian Federation.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 489-492
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of hydro-meteorological factors on the risk of harbour operations
    Autorzy:
    Abramowicz-Gerigk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/258690.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    harbour operations
    hydro-meteorological elements
    model tests of self-berthing
    real scale experiments
    safety of navigation
    ship motion simulation
    Opis:
    The paper presents a study on the environmental impact on the risk of harbour operations. The hydro-meteorological elements have been recognised as the most important safety factors with regard to the ship entrance into the harbour and berthing inside the docks. They are identified as real time, short and long term factors and they all should be considered in the safety assessment of harbour operations. The risk of each operation should be determined on the basis of weather forecast and the modelled prediction of the total water level, surface currents and waves. Several topics have been discussed in the paper with regard to the safe ship approach and navigation inside the harbour. The application of different tools for the prediction of ship performance is presented. The stochastic method for the determination of probability that the ship will navigate within the boundaries of the required navigational width and low speed manoeuvring standards proposed by Panel H-10 SNAME have been considered. The real scale experiments carried out in Port of Gdynia and the several trials performed using the Full Mission Simulator convinced that the open water model tests are necessary for the proper prediction of ship performance during berthing. The program of the proposed open water investigations is presented in the paper. The experimental stand constructed for the tests of ship-berth interactions, in the lake Silm at the Ilawa Ship Handling Training and Research Centre facilities is described.
    Źródło:
    Polish Maritime Research; 2007, S 2; 33-37
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The linearization of mooring load distribution problem
    Autorzy:
    Artyszuk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/135702.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    ship manoeuvring
    mooring
    berthing
    hydrodynamics
    loads
    linear model
    linearization
    Opis:
    This paper presents a novel step forward in finding the loads of particular mooring ropes that balance the steady environmental excitations for a ship staying at berth. The industrial static equilibrium method for a rough assessment of ship mooring safety is considered to be well-established. The static loads are directly related to the rope’s MBLs (minimum breaking loads) while applying a certain safety margin (usually 50%). The problem is reduced to a set of linear equations that may be solved analytically. The generality in terms of arbitrary horizontal and vertical angles of mooring ropes is preserved. All derivations are provided to enhance trust in the very simple yet absolutely accurate and fast linear solution. The accuracy is studied both analytically, throughout all the development stages, and finally by comparison to the exact numerical solution of the original nonlinear equilibrium equations for an exemplary mooring pattern. A discussion of selected effects in load distribution is also given. Using the approach presented, for instance, we can efficiently test mooring safety when any mooring rope of the set is accidentally broken.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 46 (118); 9-16
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The modelling of buckling fenders to protect the ship berthing process
    Autorzy:
    Galor, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/243425.pdf
    Data publikacji:
    2007
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    safety of navigation
    berthing of ship
    impact energy
    buckling fenders
    polyurethane elastomers
    Opis:
    The berthing of ship to the quay is the last stage of navigation process in marine shipping. During the ships berthing the impact in berth can occur and in result the appearing of energy in ship - fender device - berth system. The exceeding of admissible value of this energy leads to damage of one of these elements and in effect causes the accident. The accident can happen as unwanted event connected with negative consequences (damage of ship and port structure). It can be connected with ship's strike in quay. The fenders are devices to protect the port structures and ships bulk while berthing to the quay. Design and choice of fender system should contain selection suitable devices answering of existing or planning construction of structure, which select system should be protected. The buckling type of fenders (arch, conical shape) are the newest generation combining excellent absorbing energy with reaction forces of ship berthing. The paper presents the study of fenders designing based on analytical, experimental and numerical considerations. The paper presents an example of fenders designing. The buckling type of fenders achieved by carrying out of laboratory research was made. The Portowców Quay in Port of Świnoujście real research of ships berthing was carried out.
    Źródło:
    Journal of KONES; 2007, 14, 3; 169-175
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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