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Content available Wind influence on ship manoeuvrability – a turning circle analysis
100%
Novaselic M. , Mohovic R. , Baric M. , Grbić L.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2021
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tom Vol. 15 No. 1
47--51
EN
Ship manoeuvrability is a wide term which consist of number of various parameters. Knowing the influence of these parameters on ship manoeuvrability is a first condition to ensure and maintain safe navigation. However, many of these parameters are external forces and, in some cases, cannot be calculated and prediction may be complicated. Analysing the influence of external forces can give as an insight into ship manoeuvrability when such external force occurs. The main purpose of this paper is to analyse the influence of wind on ship manoeuvrability. The best way to make such analysis is during turning circle because in this case wind acts in all 360°. Analysis is made using empirical equations and in situ with the real vessel. The results provide the better understanding of vessel trajectory and show that in some cases vessel may respond in unexpected manner.
2
Content available Reducing a human factor in cruise ships accidents by Improving crew competences
100%
Gundić A. , Vujičić S. , Maglić L. , Grbić L.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2021
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tom Vol. 15 No. 2
415--421
EN
In recent decades, there has been noticed a continuous growth of passengers on cruise ships. Technical as well as technological development follow this growth side to side as far as construction, transport of passengers and strict legal regulations are concerned. However, recent maritime accidents, such as the Costa Concordia’s accident, question the level of maritime safety on cruise ships. Maritime accidents on cruise ships are almost entirely linked to human factor, directly or indirectly. Apart from the parameters affecting human factor, the literature mentions very frequently the importance of education, training and crew competences in the process of reducing the number of maritime accidents. However, very few researches have been done on competences that can affect strongly the level of maritime safety on cruise ships, i.e., that can reduce the effects of human factor on it. The purpose of this study was to find a connection between reducing the effects of human factor on accidents and the crew competences on cruise ships. The research lasted for two years and consisted of two phases. Qualitative as well as quantitative methods of analysis were used in both phases. Competences that are the essential part of obligatory programmes the crew members on cruise ships have to master, and that are prescribed by the STCW Convention were analysed in the first part of the research. The second part of the research analysed competences that are essential part of programmes resulting from the cruise companies’ demands. Cruise companies have defined and determined additional programmes and competences that seafarers, navigating on their ships, have to complete and develop. The aim of the research was to determine what type of competences the cruise companies look for through additional education programmes and to determine the amount of time needed to develop them.
3
Content available Determining competences in MET of ship officers
100%
Gundić A. , Zupanovic D. , Grbić L. , Barić M.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2021
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tom Vol. 15 No. 2
343--348
EN
Organizational structure of a ship changes under the influence of technological development. Processes on board a ship change as well. Major change refers to the role of the crew and consequently leads to the change of a method of determining competences. Equipment and working processes are becoming more complicated. They have a strong impact on the crew, i.e. on their competences. Competences prescribed in STCW Convention are not in accordance with the changed role of the crew in the processes on board. In STCW Convention, competences have been grouped according to the ship’s functions at different levels of responsibility. Competences have not been prescribed on the basis of the working processes within a system. Such a situation has led to the absence of the proper upgrade of needed competences. Based on the analysis of the functional organizational structure of a ship, the paper suggests more elaborated approach to defining competences. Such an approach links competences with equipment and working processes on board a ship.
4
Content available The impact of the New Panama Canal on cost-savings in the shipping industry
100%
Zupanovic D. , Grbić L. , Barić M.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2019
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tom Vol. 13, no. 3
537--541
EN
The passage through the Panama Canal has become the usual waterway for all the ships that can navigate through the Canal. The traffic through the canal is limited by the size of a ship. The need for the expansion of the Canal has emerged due to the development of the global trade and the shipping industry. The new dimensions of the lock-chambers determine the size of the ships as well. The new generation of ships built to the largest specifications possible to transit the current locks of the canal are called the Post-Panamax vessels. The maximum dimensions of these ships are 366 meters in length, 49 meters in beam and 15.2 metres in draught. The paper analyses savings in the operational costs on three types of the Post-Panamax vessels after the Canal expansion.
5
Content available The role of the ECDIS on the development of situational awareness – a study on grounding accidents
100%
Barić M. , Grbić L. , Peričin L. , Jelic R.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2023
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tom Vol. 17 No. 1
219--225
EN
Vessel grounding accidents can potentially cause catastrophic marine accidents with environmental pollution and loss of life and economy. New systems introduced to improve safety of navigation should not be cause them. Today, the ECDIS is the main cartographic system and must therefore be an appropriate aid to support seafarers in building situational awareness with the relevant information needed for safe navigation. This paper describes the development of situational awareness and its features after which the maritime grounding accidents, in the period from 2008 to 2019 are analysed. Due to importance of the ECDIS, only ECDIS related accidents were considered. The aim of this paper was to determine which error ceased the development of good situational awareness and to determine whether there is a certain pattern by which to predict future errors and thus act preventively on them. This study shows at which situation awareness level those errors occurred and which SA demon affected the seafarers to perform an error.
6
Content available SIRE Inspections on Oil Tankers
100%
Grbić L. , Čulin J. , Perković T.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2018
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tom Vol. 12, no. 2
359--362
EN
Ship Inspection Report Programme (SIRE) addresses concerns about sub-standard shipping in oil industry. As a part of the risk assessment physical inspection of the oil tanker is performed by accredited SIRE inspector and resulting report is available to charterers, ship operators, terminal operators and government bodies. In this article SIRE inspection is described and compared with other non-mandatory and mandatory inspections on oil tankers. Some potential consequences of tanker over-inspections are discussed.
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