The hull of military ship was built completely from glass-reinforced composites on Sredne-Nevskij shipyard. To the end of this year the mine sweeper of the project 12-700 will be fully equipped and heaved off.
The representatives of Guinness World Records are going to visit Sredne-Nevskij Shipyard. The hull has already cured and the workers remove covers to the visit of the important visitors. The composite hull of mine sweeper with about one thousand tons tonnage will be demonstrated to the guests.
To that moment the ships were produced by such method in two or three times smaller. First in the world it was success to build monolithic hull from glass reinforced composite of such dimensions - 70 meters length and almost 8.5 meters height.
The hull was produced by infusion technology.
Not the materials are unique from which the hull was produced the technology is the unique. The first stage is the automatic glass fabric cutting. The construction has about 40 tons of glass fabric. Then the laying of 30 plies goes into the mold. The plies are then pressed under the pressure and impregnated with the resin. The curing process takes five-six hours. Then the mold is demolded and the readymade hull is moved to a staple.
"With the help of existing laser control technologies to monitor impregnation process we can produce such hulls in tight schedule, about one per three months", - Alexey Pishugin, the technical director of OJSC “Sredne-Nevskij shipyard” explained.
Such hull does not give way to the aluminum by strength, it weighs only seventy tons but not two hundred as the metallic weighs. There is no necessity to clean and paint the bottom every year. Thus the operation period will prolong up to sixty years. The deck and complete internal structures of the ship are produced by such method.
"The composites will be used at the construction of mine countermeasures ships in the defense industry. Composite hull is invisible to the radars. In civil sector it can be passenger ferries and pleasure yachts", - Vladimir Seredoho, the general director of OJSC “Sredne-Nevskij Shipyard” informed.
The mine sweeper of 12-700 project will be completely equipped and heaved off to the end of this year.
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