Rosnefteflot are going to receive three "super fat" river-sea RST27 tankers "RN Samara", "RN Syzran" and "RN Saratov"
Sa to information from Portnews, CJSE Rosnefteflot chartered under bareboat contract three "super fat" river-sea RST27 tankers of "Volgo-Don Max" type with marine/river deadweight of 5439/7041 t.
Under the contract vessels "SVL Liberty", "SVL Loyalty" and "SVL Unity" should be renamed as "RN Samara", "RN Syzran" and "RN Saratov" correspondingly.
All three vessels were built at Kherson Shipyard.
Project RST27 was designed by Marine Engineering Bureau.
Hull's theoretical forms are a result of scientific research carried out by Marine Engineering Bureau altogether with Digital Marine Technology in 2010 and were defined with help of calculating hydromechanics methods (CFD modeling).
These forms also were investigated by model tests at the towage tank of CSRI named for academic A.N.Krylov. Experiment fully confirmed results of theoretical investigations.
New project tanker has increased river function comparing with other MEB projects. River deadweight of RST27 vessels is increased for 761 t comparing to Armadas, while increased cargo tanks capacity and increased hull's strength are kept (vessel is of R2 sailing region, or II region due to old RS classification).
RST27 vessels satisfy requirements of Russian Maritime Registry of Shipping due to class notation KM Ice1 R2 AUT1-ICS OMBO VCS ECO-S Oil tanker (ESP).
As other river-sea going MEB tankers, RST27 vessels use full-circle rudder propellers as single movement and manoeuvre facilities. They have increased trunk and use submersible cargo pumps. They have no longitudinal bulkhead in CL and no framing in cargo tanks.
RST27 vessels satisfy dimensions of the Volga-Don Canal and Volga-Baltic Way. Overall RST27 vessel length is of 140.85 m, breadth is of 16.6 m, depth is of 6.0 m. They belong to "Volgo-Don Max" class.
Special requirements of the Russian and world petroleum companies, additional ecological RS limitations of "ECO PROJECT" (ECO-S) class were taken into consideration during designing.
RST27 vessels are assigned for transportation of crude oil and oil products, without flash point restrictions.
Total capacity of six cargo tanks and two slop ones is of 8100 cub. m, deadweight is about 6980 tons with sea draught of 4.20 m. Deadweight is about 5378 tons with river draught of 3.60 m. Cruising speed is of 10.0 knots.
Cargo system provides simultaneously transportation of 2 cargoes. Cargo pumps capacity is of 6 x 200 cub. m/hour. Two auxiliary steam boilers (capacity of 2.5 t/hour each) are installed onboard.
Two medium-speed diesels (main engine) of 1200 kWt each use heavy fuel oil with viscosity of IFO380. Bow thruster is of 230 kWt.
Electrical plant consists of three 292 kWt diesel-generators and emergency-staying 136 kWt diesel-generator.
Crew consists of 12 persons (14 places + pilot).
Autonomy is of 20/12 days (sea/river).
Keel of the RST27 lead vessel "SVL-Liberty" (building No. is of 8001) was laid down at Kherson Shipyard on 23.11.2011. She was launched on 19.10.12. She was put into operation 22.03.2013.
Keel of the RST27 second vessel "SVL Loyalty " (at Kherson shipyard) was laid down on 22.12.2011 (building No. is of 8002). She was launched on 17.05.2013 and put into operation on 12.07.2013.
Keel of the RST27 third vessel "SVL Unity" (at Kherson shipyard) was laid down on 22.03.2012 (building No. is of 8003). She was launched on 21.06.2013 and put into operation on 30.08.2013.