GREAT SHIPS of 2007
Name: Type: Owner/Operator: Shipbuilder: Libertas Bulk Carrier Atlantska Plovidba STX Shipbuilding
yard specialist and produces a good result of service speed of 14.5 knots at 85 percent MCR.
Libertas Main Particulars Model test establishment . . . . . Maritime and Ocean . . . . . . . . . . . . . . . . . .Engineering Research Institute Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CROATIA IMO number . . . . . . . . . . . . . . . . . . . . . . . . .9321914 Length o.a. . . . . . . . . . . . . . . . . . . . . . . . . . . . .225 m Length b.p. . . . . . . . . . . . . . . . . . . . . . . . . . . .216.2 m Breadth molded . . . . . . . . . . . . . . . . . . . . . . .32.24 m Depth molded . . . . . . . . . . . . . . . . . . . . . . . . .19.7 m Width of double skin, side . . . . . . . . . . . . . . . .1.4 m Bottom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.8 m Draft, scantling . . . . . . . . . . . . . . . . . . . . . . . .14.2 m Draft, design . . . . . . . . . . . . . . . . . . . . . . . . . .12.2 m Gross tonnage . . . . . . . . . . . . . . . . . . . . . . . . .40,914 Displacement . . . . . . . . . . . . . . . . . . . . . . . . . .87,369 Speed, service (85 %MCR output) . . . . .15.04 knots Cargo capacity, grain . . . . . . . . . . . . . 84326.3 cu. m. Bunkers, heavy oil . . . . . . . . . . . . . . . .2012.6 cu. m. Diesel oil . . . . . . . . . . . . . . . . . . . . . . . . .165.8 cu. m. Water ballast . . . . . . . . . . . . . . . . . . . .26633.6 cu. m. Daily fuel consumption (tons/day) . . . . . . . . . . .38.1 Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BV % high-tensile steel . . . . . . . . . . . . . . . . . . . . . .60% Main engine(s) . . . .MAN B&W 7S50MC-C(MK7) Mooring equipment . . . . . . . . . . . . . . . .Rolls-Royce Hatch covers . . . . . . . . . . . . . . .Tsuji Heavy Industry Cargo control system . . . . . . . . . . . . . . . . .DAMCOS Complement Officers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Crew . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Bridge control system . . . . . . . . . . . . . . . . . . . . .KTE Fire detection system . . . . . . . . . . . . . . .SARACOM Radars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .JRC
The STX Shipbuilding Co., Ltd., received an order for two Panamax size Bulk Carrier by the Atlantska Plovidba d.d. in Croatia on March 2004 and it's the first vessel, Libertas, was delivered on August 2007. Built to double-hull with wide side tanks used for water ballast, the hull is divided into seven cargo holds by corrugated transverse bulkheads built on stools with double bottom and double hull, consist of four pairs of
water ballast tanks and one pair of cargo hold bilge handling tanks and no structural obstacles inside of cargo holds. Libertas is designed preliminary to carry iron ore, coal and grain in the cargo holds which are coated with modified epoxy. In addition to seven cargo holds and four pairs of water ballast tanks, No.1 HFO and No.2 HFO tanks
arranged in double bottom in way of cargo hold. The water ballast carried in tanks which are coated a grey-colored tar-free epoxy, is handled by two 2000 cu. m./hr. pumps. Libertas is powered by a STX-MAN B&W 7S50MC-C (MK7) main engine developing 15,050 bhp full power at 127 rpm and good matching with a propeller designed by the ship-
W�rtsil� Engine Achieves Certification in U.S.
W�rtsil� has achieved Tier 2 marine certification under the emissions control legislation of the U.S. EPA (United States Environmental Protection Agency) for the W�rtsil� 26, in-line marine diesel engine type. This is the latest step in W�rtsil�'s continuing development of its engines for lower exhaust emissions and reduced environmental impact. The W�rtsil� 26 engine is a four-stroke heavy-duty marine engine of 260 mm cylinder bore by 320 mm piston stroke built in in-line and Vee-form configurations. It covers a power range of 1950-5440 kW (2650-7393 bhp), and is popular in a wide range of marine applications. More than 800 engines have been delivered since the introduction in 1996 and there are engines with more than 60,000 running hours. With a swept volume of 17 litres per cylinder the W�rtsil� 26 is classified by the EPA as a category 2 engine. Since January 1, 2007 U.S.-flag vessels powered by category 2 engines are required to meet the Tier 2 requirements. For in-line engines the U.S. EPA Tier 2, category 2, required emission levels for total hydrocarbons and nitrogen oxides (NOx) are less than 8.7 g/kWh. This is a reduction of NOx emissions of more than 30% compared with the IMO limit in Annex VI of the MARPOL 73/78 convention. In addition, the US EPA legislations set limits for carbon monoxide (CO) of 5.0 g/kWh and particulate matter (PM) of 0.5 g/kWh. Testing of W�rtsil� 26 engines for compliance with the US EPA Tier 2 legislation was successfully performed in the Trieste engine laboratory in Italy with fuels meeting the EPA requirements. For more information visit,
www.wartsila.com
Aker Philadelphia Delivers Third Product Tanker
The third product tanker built by Aker Philadelphia Shipyard was delivered last month, marking the first time in the yard's history that three vessels were delivered in the same year. Following successful sea trials and final testing and commissioning, the ship joins two sister vessels in American Shipping Corporation's growing fleet of double-hull product tankers operating for charter in the US Jones Act Market. As were its two predecessors, the 600-foot long MT46 Veteran Class tanker is chartered to a subsidiary of Overseas Shipholding Group, Inc. (OSG). A Naming Ceremony was held at the yard. Mrs. Sandra Ridgway conferred the name Overseas Los Angeles upon the ship while blessing the vessel and those which will sail upon her. In the coming days, the vessel will depart the yard to begin transporting petroleum products for BP Shipping under the direction of OSG. This is the second Aker Philadelphia Shipyard-built tanker delivered into service for BP Shipping. Three additional tankers are currently under construction at the yard, with the next vessel scheduled for delivery in the second quarter of 2008. In all, nine further tankers are slated to be delivered by the yard through 2011
30 Maritime Reporter & Engineering News