Journal of Marine Technology and Environment 2022 Vol. 2

In this paper there are analyzed ecosystem status characteristics, pressures and impacts, risk matrix for a marine ecosystem . The methodology is a new tool for assessing the state of the environment [1], [2]. The results are descriptive indicators of the analyzed ecosystems, wich were calculated by classical methods and computer applications [3], [4], [5], [6], [7]. Using information about these descriptive indicators, the ecological status of the marine ecosystem was assessed, calculating the risk matrix [5], [6]. Finally, it can observed that in the marine environment, the reconfigurations will have a tailor-made impact. The most affected will be the Black Sea fauna.

The development of monitoring of vibration’s system of wind turbines is an important stage for operational details. In order to highlight the innovations made in these systems, their structural elements must be analysed (characteristics and classification of sensors, monitoring and analysis of structure, conditions for monitoring program). In order to measure vibrations in wind turbines, a correct and continuous monitoring of the functional state of each element in the structure is necessary. In this paper are presented investigations for wind turbines from wind farm Mireasa, South-East region of Romania, to determine the conditions of the drivetrain and highlight any potential developed problems.

Fractal shapes can be found everywhere around us in Nature, at small scale microscopic level, at normal scale observable with the naked human eye, but also at very large scale level, when looking at very far distant galaxies. As it will be presented in this paper, there is an inherent relationship between fractal structures in Nature and the harmony perceived by human eye in the structures of Nature. Although not explicitly formulated until late XII century by Fibonacci, the very same Golden Proportion had been already approached by the ancient Greeks. This Divine Proportion which can be found around us in Nature, represents the base for the latter concept of fractal and is also the link between early mathematics and advanced fractal mathematics. Some of the first ideas about harmony and proportions are dating back in Antiquity and they were promoted by the ancient Greeks in their philosophical schools, by scholars like Euclid, Thales and Pitagora. Although the concept of fractal it is a rather young one, being introduced by Mandelbrot in the ‘70s of the XX th century, the origins of the concept of fractal seem to be found, much earlier, in the aforementioned philosophical schools. In their philosophical schools, the antics, as far as we know, beginning with the Greeks, had discovered and used the concepts of proportion and harmony, in certain proportions they worked with. One such proportion is represented by the Golden Ratio.

The article presents an in-depth analysis of the most significant accident ever in Constanta harbour using a method that goes beyond the chain of events that trigger an accident. In the introductory part, the authors present the features of the Black Sea basin, highlighting the eventual dangers to the ship's safety. Then the work presents the Systems Theoretic Accident Model and Process - STAMP method in brief; after that follows the modelling and analysis of the accident of You Xiu ship, and the scoop culminates with some short concluding remarks. The article serves as a base for further developments in accident analysis and an awareness instrument for scholars and practitioners regarding the general safety culture when operating a ship. Nevertheless, the work in this regard requires further research, and a comparative study using different methods and approaches should add more value to the actual efforts of the authors.

The safety of maritime transport in the vicinity of the coast or in the seaport area requires special attention due to its damaging effects on the marine environment. Disruption of underwater food chains, emissions of harmful gases, underwater noise, oil or oil products spillage, alteration of hydrographic conditions, and waste disposal are some of the main effects of maritime transport. The shipping pollution on the environment include 4 types: air, water, acoustic and oil spills, having disastrous consequences not only on the environment but also on the economic and social side. Increasing awareness of the impact of marine pollution has led to a decrease in the frequency of spills as well as a significant decrease in the amount of oil spilled. The main purpose of this research is to analyse and determine the maritime accidents impact on the marine environment.

The methodology proposed in this paper identifies the main steps that can be taken for energy efficiency improvement of ship motor driven systems. It is necessary to follow the principles of systematic approach, taking into account the efficiency of each element and the system as a whole. We need to collect baseline data, to make assessment of the system performance and choose the most appropriate optimization measures. The proposed approach shows the main activities and technologies that could optimize the overall energy efficiency of the system. Ship motor driven systems are one of the largest consumers of electricity on the ship and improving their efficiency will reduce energy consumption and emissions from ships.

In December 2019, the first official European Green Deal document was released, which aims to reduce greenhouse gas emissions gradually by 2050, when the carbon neutrality target should be reached. The aim of the paper is to analyse the possibility of implementing solar farms in Romania with particular interest for the nearshore area of the Black Sea. Moreover, it is analysed the current status of electricity generation sources in Romania, the profile of consumers connected to the National Energy System (NES), and the electricity injected into the grid through solar farms. On the other hand, the possibility of intermittent injection of energy into the grid and the effects on the stability of the national energy system are analysed.

The study aіms to address іssues related to the constructіon of shіps specіalіzіng іn the transport of lіquefіed natural gas or oіl tankers. Thіs type of shіp has had and stіll has a dynamіc іn іts operatіon, and іt іs more and more іntense, due to the growіng energy needs especіally іn the hіghly developed economіes of the world. The number of transportable LNGs currently exceedіng a loadіng capacіty of 100,000 m3 has already exceeded the 300 thresholds. From the fіrst shіp destіned for the transport of lіquefіed natural gas, Methane Pіoneer, of 4500 m3, thіs sector has been permanently subjected to new challenges and technologіes. The sіze of the shіps has grown contіnuously, wіth tanks exceedіng 200,000 m3 beіng buіlt іn recent years, such as Qatar Gas Q-flex shіps wіth a transport capacіty of 265000 m3.

REP(MUS) 21 is an annual exercise jointly organised by the Portuguese Navy, the University of Porto, NATO’s Centre for Maritime Research and Experimentation (CMRE) and the NATO Maritime Unmanned Systems Initiative. The exercise gives Allies and NATO partners a chance to field and evaluate new maritime technologies. A Rapid Environmental Assessment warfare group was formed using Maritime Unmanned Systems to perform an environmental assessment of this area, by collecting data from the upper ocean region (0- 200 m.), sea surface, littoral shallow waters, and river estuary. Underwater Gliders were used in the REPMUS21 exercise, brought by several partners, to conduct environmental observations from the underwater domain of the exercise’s Joint Operations Area (JOA). This paper focuses on the use of SeaExplorer underwater gliders to collect oceanographic data during the exercise, and the operational impact of using this knowledge to compile the Recognized Environmental Picture of the exercise area.

In this paper shows analysis on container ship design. Today, containers on vessel contain a wide range of different goods from consumer goods as shoes and electronic devices to chemicalsand other raw materials. Nevertheless, a container vessel is a cargo ship that carries all of its load in truck-size intermodal containers, in a technique called containerization. This article briefly discusses the scheduling of current conbtainer ship. Threfore, the manuscript major are: design of cargo ship, analyzed two model from vessel, types of container ships, etc. The design of a cargo ship was done with the NX software from Siemens. Finally, the recent trends in container vessel programming and the shortcomings of existing models are discussed.