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The paper aims at presenting oily water separators as one of the key components of complex lubrication systems used in seagoing vessels. Furthermore, the paper presents commonly used standardized connection flanges and pumps that may be considered a meaningful parameter in the evaluation of the efficiency of oily waste treatment systems in seagoing vessels. The objective of the current study was to discuss the working principles of selected oily water separators and to analyze their capacity, throughput as well as...

The availability of the Baltic Sea for the largest container vessels is limited primarily to the depth of the Danish Straits. Ships with maximum dimensions of technical for shipping by the Danish Strait are called Baltimax. Currently, the theoretical size of the dimensions of the vessels are as follows: draught 15 m, width 42-48 m, length 240 пїЅ 260 m, capacity 100-120 thousand DWT. Therefore, the authors have analyzed the actual draught consumables container ships of the three largest companies in the world in t...

The development of modern technologies allows us to solve the problem of carrying out long-term measurements of velocity and temperature in lakes. The long-term local measurements of velocity have been conducted in Lake Shira (Khakassia) in the period 2014-2015.The velocity profile along the column of the liquid in Lake Shira occurs due to density summer stratification and wind. The horizontal velocities vary greatly in depth as well as in time. The principal component method has been performed to analyze the hori...

The sea coasts and estuaries are especially exposed to the oil pollution harmful influence as they frequently suffer from oil spills relating to the tanker accidents, port and off-shore activities. The objective of the present research is to examine the rates of spilled fuel oil natural destruction on geographically different seacoasts and to assess their self-cleaning capacity. For this purpose, a number of contaminated sectors of the Atlantic coasts of France and Spain (areas of пїЅErikaпїЅ and пїЅPrestigeпїЅ ta...

This article identifies the special features of the preliminary designing of RoPax vessels. The hull geometric parameters have been defined as well as the functional parameters of the designed vessel, in consideration of the volume/capacity criterion. The preliminary assumptions have been adopted. T he preliminary calculations algorithm has been proposed, a statistical analysis has been conducted of hull geometrical properties of 20 similar vessels and the relationships reflecting the connections amongst them were...

REE determinations were conducted for two mineralized lakes of the Ishim steppe, situated between the Irtysh and Tobol rivers in the southern part of Western Siberia, by means of atomic absorption spectrometry (AAS). They are of Cl-Na-type but differ in salinity and pH. It was shown that REE distribution patterns for the Zhamantuz and Kishikaroy lake waters were identical. Nevertheless, coherent fractionation from LREE to HREE is disrupted after the equilibrium calculations. Thermodynamic modeling was performed wi...

The present study investigates and evaluates the frequency of emerging extreme wind-induced water level fluctuations, which line up with the marks пїЅadverse eventпїЅ and пїЅdangerous eventпїЅ. The method we applied involved statistics throughout 1972-2016. Standard observation data from hydrometer stations of the Sea of Azov were processed. The study provides the strong evidence that this period had abnormal level activity: ? annual cycle of level had marks above the average sea level datum; rising tide was 0,19 ...

Detecting and monitoring of coccolithophores blooms is increasingly important due to their significant role in ocean biogeochemistry and unique capacity for feedbacks to climate because of calcite carbon and DMS production and high reflectance. Application of remote sensing approach, based on dependence of water optical properties on coccolithophores/coccoliths abundance (particulate back scattering coefficient) , allows for tracing of coccolithophores dynamics at basin-wide scale enabling quantification of bloom ...

The aim of the work is to assess consequences of polychaetes Marenzelleria spp. invasion for the Gulf of Finland ecosystem in a future climate. With this objective benthic submodel of the 3-dimentional eco-hydrodynamic Saint-Petersburg Baltic sea Eutrophication Model (SPBEM) was applied. In the model 4 numerical experiments were carried out: 1) 2 control runs excluding the effects of Marenzelleria spp. under two different scenarios of global climate change (based on ECHAM5 model of Max Planck Institute of Meteorol...

The potentially toxic genus Pseudo-nitzschia H.Peragallo, 1900 is common for the phytoplankton community in the Bulgarian part of the Black Sea often proliferating to bloom densities. The highly similar morphological features hamper the precise species discrimination by light microscopy and an accurate identification requires the application of more sophisticated methods. In this study we used genus specific large subunits ribosomal DNA (LSU rDNA) primer pair in order to elucidate the species diversity within Pseu...

This study deal with numerical investigation of river sea interaction. River mouth modelling is one of the most complex problem in coastal engineering because of meteorological and oceanographic uncertainties. Although river-sea interaction has been complex problem, these areas have significant importance for human life such as dense population near this places, environmental importance, transportation etc. During the riverпїЅsea interaction numerical modelling just one defined or steady condition modelling is nev...