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19.10.16 01:01
Bureau Reports at the scientific-technical Conference "Black Sea 2016" devoted to 40th anniversary of Bulgarian Hydrodynamic Center



The 13th International Conference on Marine Sciences and Technologies "Black Sea 2016" was held in Varna (Bulgaria) on 12-14th of October, 2016. This Conference takes place every 2 year; it is organized by Varna Scientific and Technical Unions and Faculty of Shipbuilding of the Technical University of Varna.
 
About 100 scientists from different countries (Bulgaria, Portugal, Germany, Denmark, Spain, Russia, Turkey, Ukraine). Totally 60 reports were represented.
 
Marine Engineering Bureau introduced 14 reports at the Conference.
 
1. About strength calculations of ship constructions and lashings during heavy-lift cargo transportation
G.V. Egorov, N.F.Butebko and V.A.Nilva are the authors.
 
Retrospective of oversized cargoes transportation by domestic vessels and researches of possibilities of today fleet (including new series) is investigated in the report. Experience concerning strength calculations of hull constructions and fastenings calculation for heavy-lift cargoes transportation.
 
2. Stability and strength calculation during ERS support of real salvage operation in Caspian Sea
G.V. Egorov, O.A.Vorona and V.A.Cherniy are the authors.
 
It is described in the report that purpose of the emergency operations is rescue of emergency vessels during consecutive carrying out priority tasks on people rescue, preventing environmental pollution and decreasing loss of property. The main condition for success rescue operations is an opportunity to work out operative and qualified forecast of objects conditions, to estimate the residual strength of the damaged hull as well as trim and stability alternations of the object of rescue. Application of such complex approach to the survivability actions is demonstrated by rescue operation for the tanker "Grigoriy Bugrov". Result of rescue operation is as follows: crew didn't suffer, cargo spill was avoided and vessel was rescued.
 
3. New generation river-sea navigation oil and chemical tankers line-up
G.V. Egorov and V.I.Tonyuk are the authors.
 
There is proved the dimensional line-up of modern river-sea oil and chemical tankers that are interested for post-Soviet companies that work foe domestic ports.
 
4. Design and operation experience of new dry-cargo vessels of "Volga-Don max" class of "Neva-Leader" type RSD49
G.V. Egorov, V.I.Tonyuk and E.Yu.Durnev are the authors.
 
The choice and the concept of multi-purpose dry-cargo vessel of "Neva-Leader" type of mixed river-sea navigation is grounded and developed in view of requirements of main operator. The analysis of various variants of propulsion unit is executed, the optimal variant is determined. The comparative analysis of main characteristics of existing dry-cargo vessels of mixed river-sea navigation is carried out.
 
5. Creation of new generation tug-barge convoys for Far East river basins
G.V. Egorov and A.G. Egorov are the authors.
 
Analysis of existing fleet of Eastern rivers and river conditions is carried out. Optimal variants of vessels for mass cargo transportation at shallow water conditions in a form of tug-barge-trains are proposed.
 
6. Design and operation experience of one-hold multipurpose dry-cargo coasters of "Caspian Express" type
G.V. Egorov, V.I.Tonyuk, N.N.Kalugina and V.A.Cherniy are the authors.
 
Experience of design and operation of dry-cargo coasters of 003RSD04 "Caspian Express" type and their modifications are described. There is shown successfulness of some design decisions concerning arrangement of ballast tanks and big "box-shape" hold. Comparative analysis of technician-operational characteristics of 003RSD04 vessel and her close prototypes are carried out.
 
7. Investigation of arctic class railway-car-passenger ferry for Vanino-Kholmsk line
G.V. Egorov and I.A.Ilnitskiy are the authors.
 
Analysis of work of Vanino-Kholmsk ferry line is carried out; necessity of replacement of existing ferry-boats are illustrated. Design of modern Arctic-class ferry-boat intended for independent work at the line Vanino-Kholmsk was created. Her characteristics significantly exceed same ones for existing "Sakhalin' type ferry boat. Specific characteristics of new ferry-boats work are describe and justified.
 
8. Dry-cargo barges of "Europe-2B" type of 1635OU, 1635OMDL, 1635OMDL-S, RDB06 and RDB11 design for operation in Danube-Main-Rhine water system
G.V. Egorov and O.G. Egorova are the authors.
 
The history of creation of "Europe-2B" type vessels is considered. Their overall dimensions are maximally close to the way restrictions of the "Danube - Main - Rhine" system. Comparative analysis has shown a significant superiority of the barges' hulls with the longitudinal framing system over the barges' hulls with traditional transverse system. A set of structural measures to improve strength and reliability of barges' hull, that effect positively on indicators of economic efficiency, is suggested.
 
9. Design of river and river-sea integrated vessels and tug-barge convoys based on risk analysis
A.G. Egorov is the author.
 
Risk analysis of operation of existing fleet of river and river-sea tug-barge trains and integrated vessels is carried out. Basic dangers and problems concerning with hull, gears, machines and mechanisms of such type vessels are exposed. Set of results are elaborated on the base of analysis, e.g.: design recommendations; optimal schemes for tug-barge trains and integrated vessels that consider trivial and functional restrictions.
 
10. Mathematical model of definition of main characteristics of river-sea integrated vessel consisted of self-propelled vessel-pusher and barge
A.G. Egorov is the author.
 
Specifics of definition of main characteristics of river-sea tug-barge combinations and integrated vessels are offered. Block-diagram is built. Up-to-date data concerning analysis of prototype vessels is given. Schemes for definition of light weight and still water resistance are offered. Available variant of technical-economic grounding is worked out; it considers specifics of work process of tug-barge trains and integrated vessels.
 
11. Grounding of new hull structures designed with elements of vessels-donors
G.V. Egorov and N.V.Avtutov are the authors.
 
It is shown that design of vessels which are built with elements of vessels-donors uses science-based approach to definition of limit between installation of new elements and usage of old with full implementation of international and national requirements on date of new vessel building, with actual ensuring reliability on set life term of vessel, with new quality of vessel from the point of view of main purpose and broad application of modern calculated methods and technologies. Main realized conversion projects are described.
 
12. Experimental study of coupling coefficient of river-sea integrated vessel with "super-fat" hull forms
G.V. Egorov, A.G. Egorov and A.V.Demidyuk are the authors.
 
Scale models of river-sea self-propelled vessel-pusher and non-propelled barge of with "super-fat" hull forms are made. Towing tests of models are executed separately and in coupling. Towing resistance and effective power are determined. The coupling coefficient of river-sea self-propelled vessel-pusher and non-self-propelled barge with block coefficient of 0.93 is received.
 
13. Investigation of "line-up" of multipurpose salvage vessels for work in Russian adjacent seas
G.V. Egorov is the author.
 
Results of set of design studies, theoretical and experimental researches are submitted; they became a basis of several new-generation concepts of Russian multipurpose rescue vessels (MRV) developed by Marine Engineering Bureau. Occurrence of complicated functions' combinations leads to mutual conflicting tendencies when hull forms, principal particulars and other prosperities of MRV are accepted. In despite from similar vessels built in other countries new MPV have to fulfill their functions even in the ice conditions and in the shallow water conditions. This factors cause towards increasing of vessels' length and breadth, hull forms changing subject to ice passing requirements, increasing of hull weight and power of propulsion unit.
 
14. XXI century ex-Soviet countries river shipbuilding: analysis and goals
G.V. Egorov is the author.
 
The detailed analysis of results of all type water transport vessels building in XXI century is made: cargo, self-propelled and non-propelled, tugs and pushers, passenger vessels and ferry-boats, technical fleet vessels, various functions motor boats. The reached rates of building of new vessels are analyzed and perspectives of building of river and mixed river-sea navigation vessels are shown. Emphasis is put on grounding of perspective types of new vessels, including innovation ones: with "super-fat" forms, with small air draught, combined, integrated.