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1
Content available Noise and vibration recorded on selected new generation DP class shuttle tankers operated in the Arctic offshore sector
Rutkowski G., Korzeb J.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2024
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Vol. 18 No. 1
57--64
EN
The purpose of this paper is to highlight the problem of the impact of vibration and noise recorded on selected new-generation DP-class shuttle tankers operated in the Arctic offshore sector. The paper presents the functional and disease effects associated with excessive exposure to these physical factors, the levels of which exceed the normatively acceptable values. The work also discusses the impact of physical factors on the marine environment. The international community recognizes that noise and vibrations from commercial ships may have very negative consequences for both humans (worker’s) and marine life, especially marine mammals. However, there are also certain legal requirements in maritime transport that require adaptation to noise and vibration control when working on ships. The acceptable noise and vibration exposure standards set out in European Union Directive 2003/10/EC (2003), the NOPSEMA Regulation (2006), the Maritime Labour Convention (MLC) guidelines (2006) and the recommendations of the International Maritime Organization IMO contained, e.g. IMO MEPC.1 / Circ.833 (2014). These regulations inform employers and employees what they must do to effectively protect both the marine environment and the health and life safety of workers employed in the maritime industry offshore. This study also presents an analysis of the results of noise measurements carried out on selected DP class Shuttle Tanker operated in the Arctic sector offshore. The article presents the methods of noise measurement and assessment, but does not discuss personal protective equipment and ship’s noise protection systems.
2
Content available Vessel-fender contact force modelling for a real-time ship manoeuvring simulator
Moreno F. M., Sasaki H. A. U., Makiyama H. S., Tannuri E. A.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2023
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Vol. 17 No. 4
813--820
EN
This paper presents the development of a method for calculating the horizontal contact forces between two bodies in a real-time ship manoeuvring simulator. The method was implemented in the simulator of the University of São Paulo, whose computing core is named “Dyna”. The model proposed calculates restoration and friction forces between bodies and has a Momentum-Impulse based criterion to reduce numerical issues when the simulation numerical integration has large time-steps. The model was empirically evaluated at the simulator by deck officers, in real-time simulations with pilots and tugmasters. We also ran simulations of that model to compare its performance under different integration time-steps lengths.
3
Content available Socioeconomic factors and navigational safety among marine pilots in lagos ports
Lawal-Fagbo S. G., Oluwakoya A. O., Ajayi-Peters A.
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
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2023
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Vol. 17 No. 4
903--910
EN
Marine transportation is a critical component of global trade and commerce, with ports serving as key nodes for the movement of goods and people. However, navigating these ports can be hazardous, with the potential for accidents and incidents that can lead to loss of life, environmental damage, and economic disruption. This study investigates the impact of socioeconomic factors on the operational risk assessments and adoption of innovative navigational aids for better safety among marine pilots in Lagos ports. A mixed-methods approach is employed, combining surveys and interviews to collect data from a sample of marine pilots operating in Lagos ports. The study focuses on the decision-making process of marine pilots in high-risk environments, exploring how factors such as education level, income, and experience might influence their risk assessments and willingness to adopt new technologies. The study's findings have important implications for policies and programs aimed at promoting safer navigation practices in Lagos ports and improving the overall safety of marine operations. The results can also inform the design of training and education programs for marine pilots, as well as the development of new technologies and tools to support safe navigation.
4
Content available A heuristic approach to optimizing the loading of homogeneous marine cargo
Bernardelli Michał
Operations Research and Decisions
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2022
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Vol. 32, No. 2
1--15
EN
In this article, the optimal loading of homogeneous marine cargo is considered. A mathematical formulation in terms of a mixed-integer linear program can be given. Still, the level of complexity turns out to be too high to perform full-scale computations. On the one hand, the reasons for this are the multitude of variables and constraints. On the other hand, feasible solutions to such problems may often be economically unacceptable or simply empty. Therefore, a heuristic is presented, according to which the relaxation of the limiting conditions influencing the solution’s feasibility and its economic profitability was parametrized. Under this heuristic, shifting the deadlines of selected orders is allowed. Also, the assignment of orders to vessels is separated from the allocation of vessels to piers in loading and unloading ports. The solution presented can be easily generalized by adding additional restrictions or features like indirect vessels, founding cost, or differentiation between materials.
5
Content available Comparison of reduction systems of harmful substances into the atmosphere in accordance to requirements of IMO Tier III
Czmyr Stanisław, Kaminski Piotr
Journal of KONES
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2019
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Vol. 26, No. 3
7--14
EN
Degradation of the environment is nowadays believed to be the most alarming problem that needs to be solved. Global warming and environmental pollution are predicted to cause a catastrophic chain reaction leading to species extinction, mass emigration due to rising sea levels and global crisis. The only solution suggested by international organizations is the immediate reduction of greenhouse gases and other harmful substances. Marine transportation harmful substances into the atmosphere are recognized to be a significant source of global atmospheric pollution. Despite the high efficiency of marine diesel engines, their impact on the environment is considerable. Due to environmentally friendly policies, modern engines concerns about not only efficiency but also mainly about s aspects. This article analyses and compares marine s exhaust gases reduction methods. Especially the most harmful substances emitted by ships were taken into consideration. The article presents the most crucial law regulations of harmful substances to the atmosphere, pointing at actual and possible future implementations. The most complex methods allowing meeting the latest limits were presented. Pros and cons of available control methods were thoroughly described and methods were compared. The most adequate methods form the effectiveness and economical point of view was pointed out.
6
Content available Zarządzanie portem morskim jako przedmiot działalności gospodarczej wykonywanej przez przedsiębiorcę publicznego
Żukowska A.
Gospodarka Materiałowa i Logistyka
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2018
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nr 12
1376--1384
PL
Artykuł ma na celu przedstawienie znaczenia portu morskiego dla gospodarki narodowej. Analizie poddano zasady wykonywania działalności gospodarczej przez państwo i jednostki samorządu terytorialnego. Dokonano przeglądu zadań podmiotów zarządzających portami morskimi, w świetle obowiązujących unormowań prawnych. Analizie poddano także instrumenty prawne, którymi dysponuje podmiot zarządzający portami morskimi.
EN
The role of a seaport is pivotal for state economy. Author analyzed legal regulations on seaport management and described why and how state or self-government units exercise economic activity in the field of seaport management.
7
Content available Wybrane prawne aspekty realizacji zadań z zakresu ochrony środowiska morskiego przez port morski
Żukowska A.
Gospodarka Materiałowa i Logistyka
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2018
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nr 12
1363--1375
PL
Artykuł ma na celu przedstawienie roli portu morskiego w wykonywaniu zadań z zakresu ochrony środowiska morskiego. Dokonana została analiza unormowań prawnych, z których wynikają nakładane na porty morskie obowiązki związane z ochroną środowiska morskiego. Analiza uwzględnia zarówno przepisy prawnomiędzynarodowe jak i krajowe.
EN
In the article author defined role of the seaport in exercising functions in the field of maritime environment protection. Author analyzed national and international legal regulations obliging seaports to fulfil tasks of protection of maritime environment.
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