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1
Content available Tropical cyclones avoidance in ocean navigation - safety of navigation and some economical aspects
Szymański M., Wiśniewski B.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2018
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Vol. 12, no. 1
57--68
EN
Based upon the true voyages various methods of avoidance maneuver determination in ship - cyclone encounter situations were presented. The goal was to find the economically optimal solution (minimum fuel consumption, maintaining the voyage schedule) while at the same time not to exceed an acceptable weather risk level.
2
Content available Comparison of ship performance optimization systems and the bon voyage onboard routing system
Wiśniewski B., Szymański M.
Zeszyty Naukowe Akademii Morskiej w Szczecinie
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2016
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nr 47 (119)
106--115
EN
A significant increase in demand for navigation support systems called Onboard Routing Systems (ORS) can be observed in the World’s merchant fleet. ORS is a navigation-support system that enables route programming to warn of dangers and navigation constraints and determine the required route-safety level directly onboard the vessel. In this article, an attempt to analyze and compare two ORS systems has been made: the Ship Performance Optimization System (SPOS), by the Meteo Consult Group; and the Bon Voyage system by Applied Weather Technologies (AWT). Individual items, methods, and criteria of both systems for optimization and weather forecasting models utilized have been compared. Particular attention has been paid to the usefulness of the systems regarding the problem of identification and avoidance of hazards such as tropical cyclones and wave resonance. Ergonomics of both systems has also been compared.
3
Content available remote Research on Ship Navigation in Numerical Simulation of Weather and Ocean in a Bay
Soda T., Shiotani S., Makino H., Shimada Y.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2012
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Vol. 6, no. 1
19--25
EN
For safe navigation, high-resolution information on tidal current, wind and waves is very im-portant. In coastal areas in particular, the weather and ocean situation change dramatically in time and place according to the effects of geography and water depth. In this paper, high-resolution wave data was generated using SWAN as a numerical wave model. To estimate waves, wind data is necessary. By using the mesoscale meteorological model of WRF-ARW, detailed wind data was generated. The tidal current data was generated by using POM. We simulated tidal currents, wind and ocean waves for the duration of a typhoon passing over Japan in Sep-tember of 2004. Secondly, we simulated ship maneuvering using simulated tidal current, wind and wave data. For the ship maneuvering model, the MMG (Mathematic Modeling Group) was used. Combining high-resolution tidal current, wind and wave data with the numerical navigation model, we studied the effects of tidal current, wind and waves on a ship’s maneuvering. Comparing the simulated route lines of a ship with the set course, it was recognized that the effects of the tidal current, wind and waves on a moving ship were significant.
4
Content available remote Ice Management – From the Concept to Realization
Frolov Y., Mironov V., Zubakin G., Gudoshnikov Y., Yulin A., Smirnov V. F., Buzin I.V.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2012
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Vol. 6, no. 2
215--220
EN
In the present time in the Russian Arctic and freezing seas there's the growth of industrial activ-ity. In addition to the traditional navigation in the ice-infested waters the development of the new offshore hydrocarbon deposits is planned. New production and uploading platforms and high-tonnage tankers appear in the Arctic. Widening of the sea activities in the Arctic, the implementation of comprehensive technical pro-jects and the need to ensure their safety made it necessary to develop and introduce principally new infor-mation and logistics system - a system aimed at “managing ice conditions” or the so-called “Ice Manage-ment” (IM). The vast experience of the informational support of the ice navigation is accumulated in Russia, many components of the IM are developed and implemented in the active practice. The paper presents the summary of such experience. The concept of development the IM on the Shtokman Gas Condensate Field is discussed.
5
Content available Avoidance of tropical cyclones using the "CYKLON II" program
Wiśniewski B., Kaczmarek P.
Zeszyty Naukowe / Akademia Morska w Szczecinie
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2010
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nr 22 (94)
71-77
EN
This paper presents the methodology of constructing a collision avoidance plot "ship – tropical cyclone". The computational algorithm and its testing results are presented. The tests make use of information from the voyage of the ship "Diana" and weather reports and forecasts on the real tropical cyclone Bill, which moved in August 2009 across the North Atlantic.
PL
Zaprezentowano metodykę konstruowania nakresu antykolizyjnego statek - cyklon tropikalny. Opisano algorytm działania programu obliczeniowego i podano wyniki jego testowania. Wykorzystano informacje z podróży statku "Diana" i informacje z komunikatów o rzeczywistym cyklonie tropikalnym Bill przemieszczającym się w sierpniu 2009 r. przez Północny Atlantyk.
6
Omijanie cyklonów tropikalnych przez statki w żegludze oceanicznej
Wiśniewski B.
Logistyka
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2010
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nr 4
CD-CD
PL
Zaprezentowano metodykę konstruowania nakresu antykolizyjnego dla statku celem omijania cyklonu tropikalnego. Przedstawiono algorytm obliczeniowy opracowanego programu komputerowego oraz wyniki jego testowania. Wykorzystano informacje z podróży statku „Diana” i informacje z komunikatów o rzeczywistym cyklonie tropikalnym Bill przemieszczającym się w sierpniu 2009 r. przez Północny Atlantyk.
EN
This paper presents the methodology of constructing a collision avoidance plot ‘ship - tropical cyclone’. The computational algorithm and its testing results are presented. The tests make use of information from the voyage of the ship Diana and weather reports and forecasts on the real tropical cyclone Bill, which moved in August 2009 across the North Atlantic.
7
Content available remote Multiobjective approach to weather routing
Szlapczynska J.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2007
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Vol. 1, no. 3
273--278
EN
The paper presents a weather routing solution for sail-assisted ships. Since the route finding optimisation process is a multiobjective one, the emphasis is put on possible application of multiobjective optimisation methods. The paper focuses on two such methods, namely evolutionary algorithms and ranking methods represented by Fuzzy TOPSIS. In addition, a proposed set of optimization criteria is presented. Descriptions of assumed ship and sail models as well as exemplary speed characteristic are also provided. Finally, a proposal of application to a weather routing tool is presented.
8
Content available remote A numerical prediction system for wind and sea wave: a typhoon case
Chen J.-M., Hu J.-S., Huang W.-L., Hsu L.-H.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2007
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Vol. 1, no. 3
279--282
EN
A numerical model system is constructed to predict surface conditions over the open oceans for a typhoon case. Its atmospheric and oceanic components are the Weather Research and Forecasting (WRF) model and the NOAA WaveWatch version 3 (NWW3) model, respectively. The initial condition of the WRF is obtained from the NCEP aviation forecast, while the WRF-predicted surface winds serve as the boundary conditions for sea wave prediction of the NWW3.The capability of this model system is evaluated in terms of the predictions of surface wind and sea waves associated with the typhoon Bilis (No. 0604). This typhoon formed over the west side of Guam (141?E, 12?N) on July, 9, 2006, and moved northwestward across Taiwan to decay over southeast China on July, 15, 2006. Its moving track is reasonably predicted by the WRF with an averaged error of 99 km in 24-hr forecast and of 233 km in 48-hr forecast. These errors are in comparable ranges with the official typhoon forecasts conducted by weather services in the countries around the Pacific. The circulation pattern and intensity of surface winds and height of sea waves can be adequately portrayed by this prediction system in advance by 48 hrs. The dangerous and navigable semicircles of the typhoon are also clearly delineated. As such, the spatial domains of high wind and high sea are identified, providing potentially useful information for navigation safety.
9
Content available Programowanie tras statków na oceanach
Wiśniewski B.
Zeszyty Naukowe / Akademia Morska w Szczecinie
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2004
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nr 2 (74)
395-405
PL
Zaprezentowano problematykę programowania tras statków na oceanach. Przedstawiono metody obliczeń tras minimalno-czasowych i przykładowe rezultaty rekomendacji tras z ośrodka lądowego armatora Polska Żegluga Morska.
EN
This article deals with the problem of ship ocean route programming. Methods of computing minimum-time routes and examples of route recommendations by the Polish Steamship Company land-based center are presented.
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