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01.01.17 11:47
RSD49 vessels of "Neva-Leader" type and modernized vessels of "Volzhskiy" type had been actively used by NWSC in lighterage transportations of grain

According to the press service of North-Western shipping company, multipurpose river-sea dry-cargo vessels of RSD49 prj. of "Neva-Leader" type and modernized with coamings raise by Marine Engineering Bureau vessels of 05074M prj. of "Volzhskiy" type were actively used by the Shipping company in grain transportations from river terminals to sea and roads transshipment complexes in the area of port Caucasus with further transshipment to sea vessels (i.e. lighterage).
In 2016 such transportations of grain cargo by North-Western shipping company (part of UCL holding) counted 1.12 million tons, 35% more than in 2015. In total cargo capacity of grain included in lighterage transportations, wheat transportations counted 900 thousand tons, 55% more than last year; barley, corn, linen and other grain - 220 thousand tons. All lighterage operations of grain took place in sea ports of Azov-Black Sea basin.
Due to tentative forecasts, in 2016 grain capacity for lighterage will be about 60% of all grain cargos of North-Western shipping company transported in the export-import direction and between foreign ports. The increase of current segment in North-Western shipping company structure happened due to good harvest of grain crops in 2016 and high profitability of transportations to the final ports of Africa and Middle East with the help of sea vessels with big cargo capacity.
In 2017 NWSC is going to increase amount of grain transportation by using a wide spectrum of river-sea vessels.
The lead RSD49 vessel "Neva-Leader 1" was put into operation on 26.11.12, the seventh one "Neva-Leader 7" was accepted for operation on 23.12.13.
Nevskiy Shipyard is a builder.
RSD49 prj. is designed by the Marine Engineering Bureau.
RSD49 vessels refer to the "Volga-Don Max" type due to MEB internal classification. They have maximum possible dimensions for Volga-Don canal. Vessels of the series can be operated for transportations of general, bulk, timber, grain and large-sized cargoes, dangerous goods of 1.4S, 2, 3, 4, 5, 6.1, 8, 9 classes of IMDG Code and cargoes of category B of BC Code. Sailing regions are Mediterranean, Caspian, Black, Baltic, White, North Seas, including voyages around Europe and to Irish Sea in winter.
RSD49 vessel's feature is a big middle hold of 52 m long as diversity from all other "Volga-Don Max" type projects designed by MEB. This hold allows to transportation of large-sized cargoes in direct voyages from Europe to Caspian Sea; such point should significantly increase economic effect of vessels' operation.
Vessel was designed for Russian Maritime Register of Shipping class notation of KM Ice2 R2 AUT1-C.
RSD49 vessels' are the biggest ones among the dry cargo vessels that satisfy Volga-Don canal dimensions for today such as prototype RSD19 vessels.
With characterized draught of 3.6 m in Volga-Don canal deadweight is about 4520 t, maximal deadweight in the sea with draught of 4.70 m is of 7143 t. Overall length is of 139.95 m, overall breadth is of 16.70 m, breadth without side fenders is of 16.50 m, depth is of 6.00 m. Summarized capacity of cargo holds is of 10920 cub. m.
Four dry cargo vessels "Volzhskiy-40", "Volzhskiy-44", "Volzhskiy-47" and "Volzhskiy-50" (05074 prj.) were modernized due to Marine engineering Bureau project in 2010-2011. After modernization vessels received Russian Maritime class KM L4 R2-RSN.
Vessel's re-equipment is based on idea of usage high (3.5 m taking into consideration existing coamings) continuous longitudinal hatch coamings that allow due to significant section height increase to enhance simultaneously standard of general strength of vessel's hull (by 56%), cargo holds' capacity, deadweight in accordance with requirements of International Load Lines Convention. Existing coamings and previous upper deck were the most loaded elements that worked out their fatigue resource. These elements appear now in the zone closed to the neutral axis of the equivalent beam, so they are excluded from the general hull bending; such situation allows to keep them as hull elements. Inertia moment rise of the high transverse section (while keeping bottom thickness) increased bottom section modulus by 42%.
Forecastle height was increased for 1.7 m to improve seaworthiness qualities. Moreover, sides' shell between decks in aft area was mounted, so full scale poop superstructure was generated.
Conventional vessel's deadweight was increased from 4350 t up to 6067 t (by 1717 t or by 39%), cargo holds' capacity rose from 6441 up to 9404 cub. m (by 2963 cub. m or by 46%).
There is a list of main works fulfilled by shipyard:
• mounting of the new longitudinal cargo hatch coamings (height increasing of the existing ones by 2.5 m) with new main deck mounting;
• generation of poop superstructure;
• forecastle height and length increasing;
• in dry compartment (PS, 96-106 frames' region) carbon dioxide compartment is constructed (for fire extinguishing in cargo holds) with ventilating exit shaft forwarding to opened upper deck.
After re-equipment vessels became cargo double-screw type ones with 4 cargo holds, with double bottom and double sides, with forecastle and poop, with ER and living superstructure located aft. They are assigned for transportation of the general, bulk, timber, grain and large-sized cargoes, ISO type containers, dangerous goods and coal.
Vessels' principal particulars are, as follows:
• overall length is 138.30 m;
• breadth is 16.50 m;
• depth is 5.50 m;
• draught (river/sea) is 3.60/4.10 m;
• deadweight (river/sea) is 4761/6067 t;
• hold's number is 4;
• summarized cargo holds' capacity is 9404 cub. m;
• summarized ballast tanks capacity is 3082 cub. m;
• ballast draught is 2.87 m;
• hatch covers are of "piggy back" type.
Modernized dry-cargo vessels of "Volzhskiy" type have technical and economic characteristics that significantly exceed same ones before re-equipment; such enhancing allows these vessels to be successfully operated in the conditions of the river-sea and marine transportations.