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Wyświetlanie 1-15 z 102
Tytuł:
Nautical access study based on real time bird’s eye view simulations
Autorzy:
Mansuy, M.
Candries, M.
Eloot, K.
Powiązania:
https://bibliotekanauki.pl/articles/1841571.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
manoeuvring study
ship manoeuvering
ship manoeuvring simulation
Fast Time Simulation (FTS)
Real Time Simulation (RTS)
3D Visualisation
manoeuvring simulator
manoeuvring assessment
Opis:
Real time ship manoeuvring simulations are a valuable source of information in the detailed design phase of nautical studies. The feedback of pilots, which is not available for fast time simulations that are carried out by a computerized autopilot, is an important asset in the evaluation of the feasibility of ship manoeuvres. However, real time simulations are significantly more expensive in that realistic 3D visuals are needed so that the pilot can immerse himself in a sailing environment. Modelling and generating such 3D views is time consuming and requires expensive hardware and special skills. Real time simulations that offer only a 2D bird’s eye view for the execution of manoeuvres by pilots, can sometimes be used as a cheaper and faster alternative. This paper presents a case study that evaluates the nautical access to two harbours and discusses some of the advantages and disadvantages of a real time bird’s eye view setup.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 1; 53-61
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Manoeuvring to required approach parameters - distance and time on course
Autorzy:
Lenart, A. S.
Powiązania:
https://bibliotekanauki.pl/articles/320755.pdf
Data publikacji:
1999
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
nawigacja
manewrowanie
navigation
manoeuvring
Opis:
The predicted object distance on course Dc and the time interval to its occurrence Tc are sometimes used additional criteria for collision threat. They are calculated in some ARPAs as BCD - the bow crossing distance and BCT - the bow crossing time. The scope of this paper is aimed at the problem which although it can be and it is connected with collision avoidance manoeuvres, but it is rather reversed and can be applied for intentional approaches or in naval tactical manoeuvres - what own speed and/or course manoeuvre should be undertaken to achieve the required distance on course Dc and /or time to this distance Tc?
Źródło:
Annual of Navigation; 1999, 1; 109-115
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Manoeuvring to required approach parameters - distance, time and bearings
Autorzy:
Lenart, A. S.
Powiązania:
https://bibliotekanauki.pl/articles/320835.pdf
Data publikacji:
2000
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
nawigacja
manewrowanie
navigation
manoeuvring
Opis:
Formulae for calculation of own speed and course to achieve a required distance, time and bearings in respect to a selected object are derived and their graphical interpretation is provided.
Źródło:
Annual of Navigation; 2000, 2; 89-97
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of ships manoeuvring area dimensions reckoned by means of GNSS measurements
Autorzy:
Zalewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/320687.pdf
Data publikacji:
2008
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
obszar manewrowania
manoeuvring area
Opis:
The paper presents possible methods of dimensioning manoeuvring water area which take into account the GNSS accuracy factor. Based on real experiment measurements in Świnoujście harbour the comparison of manoeuvring areas' dimensions by methods with and without allowance for measurements' biases has been made. The precedence of these methods in respect of their reliability has been proposed.
Źródło:
Annual of Navigation; 2008, 13; 139-148
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Manoeuvring to required approach parameters - distance and time abeam
Autorzy:
Lenart, A. S.
Powiązania:
https://bibliotekanauki.pl/articles/320837.pdf
Data publikacji:
2000
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
nawigacja
manewrowanie
navigation
manoeuvring
Opis:
Formulae for calculation of own speed and course to achieve a required distance and time abeam in respect to a selected object are derived and their graphical interpretation is provided.
Źródło:
Annual of Navigation; 2000, 2; 81-88
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of hydrodynamics on ship handling characteristics in training simulators
Autorzy:
Kobyliński, L.
Powiązania:
https://bibliotekanauki.pl/articles/135466.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
ship manoeuvring simulators
Coanda effect
bank effect
hydrodynamic theory
manoeuvring scenarios
passage
Opis:
Currently, ship operators (ship masters and pilots) are trained on ship simulators, either Full Mission Bridge (FMB) simulators, or Manned Model (MM) simulators. Both types of simulator increase an operator’s skill in manoeuvring a ship, and both incorporate the impact of hydrodynamic forces on the handling characteristics of a simulated ship. However, all forces affecting manoeuvring are the result of flow patterns that build up around the hull. These flow patterns may have extremely complex effects on many practical manoeuvres. Recent advances in hydrodynamic theory allow the impact of hydrodynamic forces on manoeuvrability to be simulated quite accurately so long as the simulated ship is moving straight ahead or performing standard manoeuvres. These advances also allow the simulation of such external influences as bank effects, shallow water effects, and canal effects, as well as the effect of the passage of other ships in the immediate vicinity. With a measure of simplification, these effects can be incorporated in FMB simulators. They can also be simulated by MM simulators provided both the models and training areas are properly prepared. As they are now, training simulators do not contribute to a trainee’s understanding of the way in which flow patterns develop or of the forces they create. This article discusses this deficiency and proposes a solution for it. Several examples of specific manoeuvring scenarios are used to illustrate the solution.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 45 (117); 9-16
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Safety of manouvering, mooring and unloading of lng carriers in outer port of Swinoujscie
Autorzy:
Gucma, S.
Gucma, M.
Powiązania:
https://bibliotekanauki.pl/articles/320703.pdf
Data publikacji:
2009
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
manewrowanie
bezpieczeństwo
LNG
manoeuvring
safety
Opis:
Safe entrance to the port of LNG carrier (vessel of length abt. 300m) to the terminal requires considering of technical and navigational aspects, as well as fulfilment of series of safety criteria related to manoeuvring, mooring and unloading of LNG carrier (LNGC). Complex manoeuvring, mooring and unloading safety assessment of LNG C in port, might be done as a assessment of particular types of manoeuvres and exploitation operations. Article copes with all this aspects.
Źródło:
Annual of Navigation; 2009, 15; 33-40
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
How to introduce course dynamic instability into ship manoeuvring mathematical model
Autorzy:
Artyszuk, J.
Powiązania:
https://bibliotekanauki.pl/articles/320921.pdf
Data publikacji:
2006
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
zdolności manewrowe statku
ship manoeuvring
Opis:
The paper presents a method of conversion of the previously published full-mission time-domain manoeuvring mathematical model to an analytical model under steady turning conditions. The aim is to identify the parts of the model directly responsible for a given shape of the spiral test curve in case of directionally stable or unstable ships.
Źródło:
Annual of Navigation; 2006, 11; 5-20
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Open water manoeuvring model tests at the Joniny Test Station, Ship Hydromechanics Division, CTO S.A.
Autorzy:
Bednarek, A.
Głodowski, R.
Ołtarzewski, A.
Powiązania:
https://bibliotekanauki.pl/articles/258688.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
free sailing model tests
manoeuvring abilities of the ship
manoeuvring tests
model tests
Opis:
Although the role of computational methods (CFD) in prediction of the hydromechanic qualities of ships grows rapidly, the role of the physical experiment is still very important (if not principal). Concerning the experimental investigations focused on manoeuvring abilities of ships, there are two main approaches to be applied: open water model tests and captive model tests (Planar Motion Mechanism). The paper contains some basic information concerning the first of mentioned methods including the evolution of the measuring techniques, applied equipment and methodology. These changes result not only from technological progress, but also reflect different expectations of our Clients. In the case of mentioned open water manoeuvring model test, its specific character determines a little bit different approach, which combines some strictly scientific objectives, i.e. prediction of the manoeuvring abilities, with commercially attractive and direct demonstration of the results. Thus, in parallel with description of the measuring systems used during the tests (starting from mechanical/optical torograph system to modern laser tachimeter system), evolution of the visualization systems is also presented. In addition, some future trends in the development of the open water tests station in Joniny has been described including experimental work as well as basic/auxiliary equipment.
Źródło:
Polish Maritime Research; 2007, S 2; 73-76
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prediction of propeller forces during ship maneuvering
Określanie sił śruby napędowej podczas manewrowania statkiem
Autorzy:
Abramowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/279647.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
ship manoeuvring
ship propeller forces
Opis:
A method is proposed for the determination of propeller forces during ship maneuvering. Artificial neural networks were applied to the performance prediction of a propeller working under such conditions as braking, stopping and running astern. Furthermore, an effect of oblique motion of a maneuvering ship, is studied by means of computational fluid dynamics methods. Wake distributions in the propeller plane are presented when the drift angle gets higher. A simple application example of the discussed methods is presented for a real case of a maneuvering ship.
W pracy zaproponowano metodę służącą do określania sił śruby napędowej podczas manewrowania statkiem. Do wyznaczenia charakterystyk śruby napędowej pracujacej w warunkach hamowania, zatrzymania i ruchu wstecz zastosowano sztuczne sieci neuronowe. Ponadto, przy pomocy metod numerycznej mechaniki płynów uwzględniono efekt skośnego ruchu kadłuba manewrującego statku. Zaprezentowano obliczone podczas zwiększania się kąta dryfu rozkłady strumienia nadążającego w płaszczyźnie kręgu śrubowego. W oparciu o prosty przykład przedyskutowano możliwość zastosowania zaprezentowanej metody dla rzeczywistego przypadku manewrującego statku.
Źródło:
Journal of Theoretical and Applied Mechanics; 2005, 43, 1; 157-178
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A simulation method for the determining the minimum pull of tugs assisting in port manoeuvres
Autorzy:
Gucma, Stanisław
Gucma, Maciej
Gralak, Rafał
Bilewski, Mateusz
Muczyński, Bartosz
Powiązania:
https://bibliotekanauki.pl/articles/135005.pdf
Data publikacji:
2019
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
port manoeuvring
simulation of ship movement
manoeuvring safety
tug assistance
determination
minimum safe pull
Opis:
The article presents a simulation method for determining the minimum safe pull of tugs assisting in port manoeuvres. The method can be used to determine the relationship between the minimum safe pull, understood as the tension on the line, of the assisting tugs and the overall length, cargo capacity or net capacity of ships manoeuvring in a given port under allowable hydrometeorological conditions. The method was verified through simulated tests of gas tankers’ entry, turning and berthing at the LNG terminal of Świnoujście.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2019, 57 (129); 49-55
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Steady-state Manoeuvring of a Generic ASD Tug in Escort Pull and Bow-rope Aided Push Operation
Autorzy:
Artyszuk, J.
Powiązania:
https://bibliotekanauki.pl/articles/116244.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Ship Operation
Generic ASD Tug
Manoeuvring
Steady-State Manoeuvring
Pushing Operation
Towing
Hydrodynamics
Tug's Dynamics
Opis:
This paper is devoted to expand the very promising research undertaken in the author's previous work, basically done on simplified modelling the escort push operation. Now, the other two modes of a tug's employment, as stated in the title, are covered. The special focus is again set on the indirect towing in that the towline force is much higher than the thruster force. The ratio of these two forces, referred to as the relative towing force (or amplification ratio) is evaluated together with the hull drift angle and the thruster(-s) angle for a given escort speed. This mutual relationship is known as the tug performance diagram. Although rather generic (container-type) formulas are derived, they are supplied for exemplification purposes with simple, analytically given hull hydrodynamic forces. The aim is also here to provide a basis for further sensitivity analysis of the model and possible improvement/optimisation to the tug design. The obtained charts also could serve as rough and clear guidance for towmasters while escorting.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 3; 449-457
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ship manoeuvring hydrodynamics in a new inland shiphandling simulator of SMU – InSim
Autorzy:
Artyszuk, J.
Gucma, L.
Gucma, M.
Powiązania:
https://bibliotekanauki.pl/articles/359481.pdf
Data publikacji:
2014
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
inland ship
hydrodynamics
manoeuvring
mathematical model
Opis:
The present paper describes the hydrodynamic modelling solutions, applied in the newly developed shiphandling simulator at SMU (Szczecin Maritime University) for the inland navigation – called InSim. The objective is to provide some guidance on the simulator capability and potential while conducting various research and the crew training projects.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2014, 37 (109); 10-15
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sea waves models used in maritime simulators
Autorzy:
Zwolan, P.
Czaplewski, K.
Powiązania:
https://bibliotekanauki.pl/articles/360557.pdf
Data publikacji:
2012
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
navigation
simulation systems
manoeuvring
sea waves
Opis:
The modern simulation software includes an impact of forces acting on the ship hull. One of the most significant forces is sea waves acting. The mathematical model allows simulation of ship motions in irregular sea wave area, both – at deep and shallow waters. The wave surface model enables simulation of the wave elevation in compliance with wave spectrum occurring in various conditions. The paper presents general description of the sea wave model used in maritime simulators. An example of such simulators is used at the laboratory of the Naval University of Gdynia, where it is operated basing on NT-Pro 5000 software by Transas Marine. The latest version of simulation software gives a possibility to select the wave spectrum. Selection of the waving type, depending on sea area location, makes the ship movement more reliable. This is an important element in testing the ships behavior process.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 32 (104) z. 2; 186-190
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
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
Wyświetlanie 1-15 z 102

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