The Turkish Merchant Shipping Industry has recently witnessed an increasing awareness of the importance to minimize environmental pollution and fuel oil consumption. Together with certain non-governmental organizations and media concerns about environmental protection, the International Maritime Organization (IMO) has been strict on controlling undesirable effects on the environment and, consequently, forcing shipping companies to minimize their emissions. Besides, today’s highly advanced technology companies over the world have developed various innovative systems that can be utilized to minimize carbon emission, thus giving assurance to relevant investors that their investments are most likely to turn out well with a considerable financial gain in the short or long term. Despite all such favorable developments, in a general look, shipping companies seem reluctant in making use of technologies providing efficiency in energy consumption. This reluctance has eventually brought about the term “Energy Efficiency Gap”. This research conducts a questionnaire, created by Acciaro et al. [1], among the shipping companies in Turkey. 20 respondent companies, who represent 26 percent of the Turkish owned merchant marine fleet of over 1000 gross tonnage in terms of deadweight cargo capacity, participated in the research. The Pearson correlation analysis was used, and interpretations were made according to the obtained statistical values. The aim of the research was to identify reasons and points restraining the use of new technologies regarding energy efficiency, as well as to develop proposals for the innovators in this field about how to overcome this handicap concerning technical and managerial aspects of gaining energy efficiency.

No abstract

International Maritime Organization (IMO) adopts international marine safety regulations. The regulations incorporated under Annex VI of IMO's International Convention for the Prevention of Pollution from Ships (MARPOL) entered into force in May 2005. These regulations define the limits for sulphur oxides (SOx) and nitrogen oxides (NOx) emissions from ship exhausts. In this context, emission reduction technologies needed for enviroment protection and satisfy to sustainabletransportation. This study aims to show the effects of emission reduction technologies for marine diesel engines. It includes 'Direct Water Injection', 'Humid Air Motor', 'Exhaust Gas Recirculation', 'Delayed Fuel Injection Time' and 'Selected Catalytic Reduction' The reseach is based on the system dynamics model.

No abstract

ÖZET

The existence of energy is essential to countries striving to survive, both  socially and economically. In this context, countries establish different types of power plants and use alternative energy resource,s such as solar and wind power, to meet their energy needs. Establishing power plants and using alternative energy resources are tough for some regions, such as Middle Eastern, African, and Asian countries. Thereby Powerships have been developed due to the consideration that these countries suffer from energy deficiency and encounter difficulties in building land power plants. In this study, the emergence of Powerships, providing electricity to energy-deficient countries and the successful launch strategies, are investigated. A single revelatory case study concept is used to understand what exactly the Powerships are, where they operate, positive and negative situations encountered during operation, as well as economic benefits compared to other systems. In this context, together with the intensive literature review, semi-structured interview questions are prepared for several company officials and former employees and detailed evaluations are described in the Powerships operation process. Semi-structured interview questions results are evaluated and discussed with a view to understanding how the company has successfully launched its innovative product to the energy market.  This article will, we hope, represent a significant resource for experts, academics, and companies working on floating energy power plants in the future.

No abstract

Increasing in harmful gas emissions caused by the use of fossil fuels harms the environment that is difficult to recover. Regulations are being implemented in order to reduce these effects in the maritime field and it is getting harder and also tough to adapt these constantly developed regulations with the existing conventional propulsion systems. Especially considering environmental factors, technological developments in conventional propulsion systems reach a certain saturation and become insufficient so that researchers have turned to work in the field of electrical propulsion systems. In this study, development of the Diesel-Electric (DE) propulsion system, which has an important place in EPS, throughout the historical process and its comparison with other EPS are applied. According to the results obtained, DE propulsion system can be applied to many ship types, furthermore, this system provides gains in terms of NOX, SOX and CO2 emissions, energy efficiency, fuel consumption, life cycle and cost. However, the initial investment cost is the biggest shortcoming of DE propulsion system.