The recently enacted "American Jobs Creation Act" gives significant tax breaks to a number of U.S. industries--including shipping.

MARINE LOG and BLANK ROME will present a senior level seminar CHANGES IN U.S. TAXATION OF SHIPPING INCOME in Stamford, Conn. on April 5 & 6, 2004

Make sure you know how the new tax rules work!

March 10, 2005

Box ships to have 14-cylinder Sulzers producing 108,920 bhp

Four 8600 TEU containerships contracted by Hyundai Merchant Marine Co Ltd (HMM) are to be powered by 14-cylinder Sulzer RT-flex96C common-rail engines. Each engine will have a maximum continuous power of 80,080 kW (108,920 bhp).

Two of the ships are building at Hyundai Heavy Industries Co. Ltd. and two at Hyundai Samho Heavy Industries Co. Ltd.

The 14RT-flex96C engines will be built under license from Wartsila Corporation by Hyundai Heavy Industries Co Ltd.

The ships are due for delivery in the first quarter of 2008 and are intended for operation on the East Asia--Europe trade. They will have a service speed of 27 knots.

Mr J.S. Kwon, Senior Vice President of Hyundai Merchant Marine looked forward to the delivery of these ships, commenting, "The choice of 14-cylinder Sulzer engines with the latest common-rail technology provides us with a very economical propulsion plant for more than 100,000-horsepower."

The Sulzer 14RT-flex96C is the most powerful marine engine on order today. It is also the first low-speed marine engine to be built with more than 12-cylinders.

The Sulzer RT-flex96C is becoming a popular engine for the propulsion of large, fast container ships with some 101 engines of this type, with seven to 14 cylinders, on order or in service.

The first RT-flex96C engines, with eight and 12 cylinders, entered service in November and December 2004 respectively.

The 14-cylinder RT-flex96C is an extended version of an already well-established 12-cylinder RT-flex96C design, which itself was developed from the Sulzer RTA96C engine type widely applied in container ships since 1998.

Wartsila says that extensive consideration was, however, given to the practicality of the increased numbers of cylinders and to ensure that the engines matched expectations in terms of safety, reliability and durability.

For, example, although there are numerous possibilities of firing orders for 14-cylinder engines, a firing order had to be found with good vibration characteristics.

With regard to the engine structure itself, the opportunity had already been taken when adapting the structure to accommodate the RT-flex common-rail system, to introduce certain modifications in all cylinder numbers for better manufacture and that also resulted in greater stiffness and reduced stresses in the structure.

This revision took the 14-cylinder engines into account. to ensure that they had adequate structural strength and rigidity without further modification.

While the crankshaft of the RT-flex96C has sufficient torque capacity for 14 cylinders, the material has been upgraded to enable an increased shrink fit for a greater design margin.

The thrust bearing structure in RT-flex96C engines with a mid gear drive has been revised to reduce deformations and stresses even with the increased thrust in the 14-cylinder engine.

The Sulzer RT-flex96C is the most powerful engine type in the new RT-flex engine series which features fully electronically-controlled common-rail systems for fuel injection and valve actuation.

Wartsila says the common-rail systems give unrivalled flexibility in the way the engines operate, to deliver benefits such as smokeless operation at all operating speeds, lower fuel consumption, reduced maintenance costs and lower steady operating speeds for better maneuvering. The RT-flex system also has the potential for adaptation to future needs.

The common-rail system offers clear benefits for the 14-cylinder engine, says Wartsila.

As usual for large marine engines, the 14-cylinder engine has a mid gear drive for the supply unit with its fuel and servo oil supply pumps. There are thus two identical rail units, each for seven cylinders. The supply unit is fairly compact compared with the overall size of the engine.

Wartsila hails the 14-cylinder Sulzer RT-flex96C engine as "a major breakthrough for ship propulsion. It extends the power available to suit the coming generation of large containerships while combining the benefits of proven, reliable engine designs with the complete flexibility of RT-flex common-rail technology.



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