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  • Author: Marcin Szczepanek x
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Abstract

The Energy Efficiency Design Index (EEDI) became mandatory for new ships as well as the Ship Energy Efficiency Management Plan (SEEMP) for all ships due to the MEPC 62 (July 2011) along with the adoption of amendments to MARPOL Annex VI by the Parties to the MARPOL Annex VI. This was the first legally binding climate change treaty to be adopted since the Kyoto Protocol. The Ship Energy Efficiency Management Plan (SEEMP), which has been obligatory since 2013, did not to cover fishing cutters but triggered the implementation of energy efficiency audits due to fishing limits, high fuel prices, and free freight market. A research team of the Maritime University of Szczecin conducted energy efficiency audits on several fishing vessels operated on the Baltic Sea and provided the results to the shipowners. On their grounds, the shipowners started seeking methods to reduce energy consumption. They began modernizing the vessels using the information collected in the reports on energy audits. Usually, the modernization process is performed in several stages. Apart from energy recovery installations, fishing vessels were furnished with the latest technologies aimed at the reduction of energy consumption and at making ships greener. The paper presents results of the said process at the selected fishing cutters operating on the Baltic Sea. The paper includes also the recommendations on the directions of the following stages of the audits.

Abstract

The BWM Convention (Ballast Water Management Convention) will enter into force on 8 September 2017. This document is a response to a very significant problem such as sea water pollution. Due to the Convention, a huge number of companies will be forced to analyze the matter and implement the required provisions. They shall also assess the technologies applied and the fixed systems for ballast water treatment as well as set the requirements in relation to the selection and installation of same at ships. The paper presents the currently applicable regulations and the review of the technologies used for ballast water treatment. There are 5 ballast water treatment systems described herein that are offered by the top producers. The paper includes also the technical and operational parameters of the systems in question. The analysis shall allow for an assessment that may be valuable during the selection process.

Abstract

In recent years lean thinking (also referred as slim) increases its popularity not only in industry, but also in the entire business world. There are many confirmed effects demonstrating the high effectiveness of this philosophy: a clear improvement of economic indicators, an increase in current satisfaction and the acquisition of new clients; better, stable quality of offered products and services; efficient organization of production; more effective management; high productivity of work and production; minimizing the costs of production and storage of stocks. Why is Lean implementation in our domestic conditions not easy and sometimes ineffective? In this study we will try to answer these very important questions.

Abstract

The Energy Efficiency Design Index (EEDI) became mandatory for new ships as well as the Ship Energy Efficiency Management Plan (SEEMP) for all ships due to the MEPC 62 (July 2011) along with the adoption of amendments to MARPOL Annex VI by the Parties to the MARPOL Annex VI. This was the first legally binding climate change treaty to be adopted since the Kyoto Protocol. The Ship Energy Efficiency Management Plan (SEEMP), which has been obligatory since 2013, did not to cover fishing cutters but triggered the implementation of energy efficiency audits due to fishing limits, high fuel prices, and free freight market. All the above caused that ship-owners started seeking ways for saving money and keep their business profitable. Apart from energy recovery installations, fishing vessels have been furnished with the latest technologies aimed at the reduction of energy consumption and at making ships greener. A research team of the Maritime University of Szczecin conducted energy efficiency audits on several fishing vessels operated on the Baltic Sea and stated that up to 40% of the energy is used during fishing operations by hydraulic devices installed at the fishing vessels. The paper presents the measurement results of energy consumption in typical operational states based on a selected fishing cutter operating at the Baltic Sea. The paper includes also the recommendations in terms modernization of hydraulic installations and the changes of control methods for devices with hydraulic drive. The calculations are also presented herein and they prove that it is possible to reduce energy consumption by a fishing cutter even by 20% while maintaining the unchanged operating parameters of the hydraulic devices.

Abstract

The search for new polymer processing ways has become necessary due to the rapidly growing technology and market needs. The time of manufacturing products, as well as the impact of process parameters and the design itself on the properties of materials have become very important. Therefore, the creation of assumptions allowing the construction of a compact device whose construction will allow, for example, high process efficiency at low screw rotational speeds or a high degree of material homogenisation, is expected by the market. However, this requires the design of new or continuous modifications and improvements to existing structures.

Abstract

This study uses anthropological and forensic medical analyses to determine the cause of fractures found in the remains of 15 individuals buried at a site associated with the Globular Amphora Culture (2875-2670 BC). The intent was to determine the mechanism underlying the injuries and to indicate the types of tools that might have inflicted the blows. The fractures were diversified in their forms, but the majority of the injuries appear to have been inflicted by a flint axe, which is frequently found in graves of the Globular Amphora Culture. Apart from the forearm being severed in one of the victims, all the remaining skeletons showed from 1 to 4 injuries involving solely the skulls. The grave might contain victims attacked by invaders who executed the captives, or else the feature is ritual in character and it reflects the beliefs of the Neolithic community.