MAN Diesel & Turbo recently signed a contract for the supply of 8L32/44CR B.2 engines as part of a complete propulsion package to power a seismic vessel ordered by GC Rieber Shipping of Norway.The contract contains an option for an extra vessel. Four of the engines, along with 2 × 2-speed Flender Twin-In/Single-Out reduction gears and MAN Alpha Twin Screw CP propellers in AHT nozzles, will power the vessel. The seismic vessel is graded as Ice Class 1A*, which provides a good basis for operating in Arctic areas.The vessel design is an ST 324 XT from Skipsteknisk of Aalesund, Norway whose hull will be constructed in Poland with outfitting subsequently carried out at the Myklebust shipyard north of Aalesund. The propulsion plant is scheduled for delivery by May 2014 with vessel delivery following in March 2015.Expertise in ice has long been a GC Rieber Shipping trademark with an emphasis on delivering customer solutions for demanding operations in sensitive environments where quality, safety and environmental concerns are crucial. These tough requirements also apply to the propulsion plant and the shipyard’s previous, positive experience with MAN Diesel & Turbo engines was decisive in finalising the propulsion package.Propulsion packageThe four-stroke 8L32/44CR B.2 common-rail engines with a high-powered 600 kW/cylinder will be constructed and tested in Augsburg, Germany – headquarters of MAN Diesel & Turbo. The common-rail B.2 engine is one of the most advanced in the company’s product portfolio, has a second-to-none SFOC, and has gained a solid foothold in the offshore business.The reduction gears from Siemens-Flender are specially designed such that – at constant engine speed (750 rpm) – two different propeller speeds can be selected (155 rpm or 120 rpm), allowing the propellers to have a much wider silent-operation window. The TI/SO gears are also provided with 2 × 2,600 kWe PTOs each.The MAN Alpha VBS1100 Mk5 CP propellers utilise, courtesy of up to six operating modes, the flexible propeller-output speed to operate at the optimum efficiency in all modes. Suppressing cavitation on the propellers is an important design criterion since, especially on the pressure side, the noise deriving from cavitation can disturb seismic sonar readings.The ø4200 CP propellers operate in Alpha High Thrust (AHT) nozzles, which further help to increase propeller performance by offering higher thrust at low vessel speed, and reduce cavitation noise through selection of the optimum nozzle L/D ratio.The Alphatronic 2000 remote-control system facilitates the most favourable propulsion-plant control in all operating modes. A special feature of the new seismic vessel is an ‘ice operation mode’ since the DNV Ice 1A* only applies when one engine is engaged to each propeller shaft. The complete propulsion plant at 100% MCR is classed as fully MCR certified by DNV for operation in areas with no ice.Finally, as part of the overall deal, MAN Diesel & Turbo will provide two years of online service and PrimeServLab (stringent quality control for engine operating fluids) on board in order to obtain valuable performance data for seismic high-load operation.[mappress]Press Release, June 28, 2013; Image: skipsteknisk
10 ′ Tournament: A group Stadium: Audience: 6 ′ Georgino advanced halfway through Arda and passed to Schwerchok. The Pole struck a blow that Stoev blocked.4 ′ Arda created the first good opportunity to score in the match. Spas Delev broke from the left and looked for Hovsepyan in the penalty area. Defender of the “eagles” cleared the ball, which again found itself at the feet of Delev. The attacker tried a shot that was blocked. 1 ′ Start of the match. Ludogorets will play today at 18:45 against rookie Arda at Lokomotiv Stadium in Plovdiv in a postponed match of the 23rd round of the First League. The Eagles are 3 wins from winning the ninth consecutive title and can take a very decisive step today to achieve this goal.There are a lot of problems in the composition of the hosts, the most acute being the goalkeeper. The three goalkeepers of Arda – Ivan Karadzhov, Nikolay Bankov and Mesut Yusuf are also injured. Thus, the teenager Lachezar Yordanov is expected to start as a starter, and one of the three will be on the bench. Outside the accounts of Nikolay Kirov is the midfielder Emil Martinov, who was punished, as well as the injured Martin Kostainov. Svetoslav Kovachev, whose rights are held by Ludogorets, is also out. Guests also have their problems. The match missed Wanderson, who was punished. It was the Brazilian who assisted in the success over Levski of “Gerena”. Forward striker Claudiu Kesheriu is slightly injured and will probably be on the bench. The good news for Pavel Varba is the condition of captain Svetoslav Dyakov, who is recovering. Before this match, Arda was in a negative series of seven matches in the championship without a victory, while Ludogorets did not know the loss in 29 consecutive matches.This match was postponed twice. The first time, because it was scheduled after the rematch of Ludogorets with Inter and the “eagles” were quarantined. After that, the state of emergency caused him to play only now.