Journal of Naval Sciences and Engineering

113 - 128

Authors: Özgenur AKTAN

The purpose of this review is to critically evaluate Peter Leeson’s paper in which he argues that piracy as profit-seeking criminal activity may produce socially desirable outcomes and achieve a social order and then, concludes that criminals’ self-interested and profit-seeking activities are capable of producing public benefits in the context of invisible hand. More precisely: the purpose is to critically discuss and evaluate Leeson’s general conclusion, line of reasoning and to present counter-arguments in the context of invisible hand and pirates’ relative racial tolerance policy towards black sailors in their crews. Leeson tries to investigate the political economic and social impacts of piracy in the late seventeenth and early eighteenth century and argues that black crew members’ economic and social status in pirate ships were more progressive compare to the legitimate merchant ships. Leeson reads black crew members’ status in pirate ships as an improvement in racial equality, economic and social justice. Therefore, he concludes that self-interested and profit-seeking criminal activities are capable of producing socially laudable outcomes. In contrast to Leeson, the argument in this review is that self-interested and profit-seeking criminal activities are not capable of producing socially laudable outcomes.

159 - 172

Authors: Elif BOZKAYA

Energy saving technologies for smart vehicles have great importance because of decreasing total energy consumption. It is estimated that the cost of energy will increase in the near future. Here, Road Side Units (RSUs) are the dominant contributing components to the overall energy consumption in Intelligent Transportation Systems (ITS). This paper investigates the energy efficiency of RSUs by proposing an energy management model for ITS. Energy efficiency can be achieved if as many as possible RSUs switch off while maintaining an acceptable quality of service. The aim is to present a way to improve total energy efficiency by scheduling RSUs with a switching on/off model so that total energy consumption of RSUs can be managed.

21-38

Authors: Serkan KARAKAŞ, Mehmet KIRMIZI

A large part of the world energy requirement is provided from offshore oil and gas fields. The Kashagan site in the Northern Caspian Sea has one of the largest known reserves and marine operations are important for the continuation of activities regarding oil and gas production in area. However, the geographical features of the region make the maritime-related activities difficult. There are different types of marine equipment in operation within the scope of the Kashagan project and one of the most widely used vessel is Multi-Purpose Tugboat / AHT (Anchor Handling Tug). As far as the requirements of the task are concerned, the geographic challenges of the region (especially low water depth) should be taken into consideration when selecting the AHT by the management. In this study, the optimum AHT vessel will be selected to operate in the North Caspian Sea by utilizing MOORA (Ratio and Reference Point approaches) and TOPSIS methods and the concordonce among three methods will be tested by Kendall’s Coefficient of Concordonce (Kendall’s W).

63-85

Authors: Kadir ATASEVEN, Hüseyin YILMAZ

Survivability of a naval surface ship is defined as the durability of the ship to a defined weapon threat, and, the degree of its ability to maintain at least the basic safety and operability of the ship, and is composed of a combination of the ship's susceptibility, vulnerability and recoverability. The empirical stability criteria laid down by Sarchin and Goldberg in 1962 are used to assess the survivability of warships. In recent years, along with deterministic rules, the probabilistic approach that has been made mandatory for the passenger / Ro-Ro ships by the International Convention on the Safety of Life at Sea (SOLAS) have been used for warships. In this study, the fundamentals of using the concepts of the deterministic and stochastic approaches and the concept of probability used in assessing the survivability of warships are emphasized.