The Fairplay Towage shipping company officially launched a new harbour tug featuring diesel gensets certified to IMO Tier III in Rotterdam on 10 July 2015.
Powered by MTU Series 4000 engines featuring an SCR exhaust aftertreatment system, these diesel gensets are some of the first gensets in the world already certified as complying with IMO Tier III emission levels which come into force in 2016. Rolls-Royce delivered the two MTU 16V 4000 M63L main propulsion engines, each delivering 2,000 kW, one Series 4000 M23F 16-cylinder diesel genset with 1,520 kW and the MTU-developed SCR system. The exhaust aftertreatment system featuring selective catalytic reduction technology is combined with the diesel genset. MTU is a Rolls-Royce Power Systems brand which belongs to the Land & Sea Division of Rolls-Royce.
“We're rather proud of being able to demonstrate the capabilities of this pre-series, space-saving solution to our client in the course of these trials”, says Nadine Buhmann, Head of Marine & Offshore Business at MTU.
With trials in the Fairplay tug lasting some 10,000 hours, MTU is advancing its series solution for IMO Tier III marine engines. As of 2016, new vessels operating in the so-called Emission Control Areas off the North American coast and in the Caribbean must observe the NOx limits defined by the IMO Tier III emission level of the International Maritime Organization's MARPOL Annex VI regulations. Compared with emission level Tier II, NOx emissions have to be reduced from eight to two grams per kW/h.
The Fairplay shipping company can thus be seen as taking a pioneering role in trialling high-speed diesel engines featuring SCR technology to meet the requirements of IMO III.
“We're eager to gather experience in this field at an early stage to ensure we have the most efficient system up and running when IMO Tier III comes into force in Europe”, explains Walter Collet, Managing Director at Fairplay.
Built by the Spanish shipyard Astilleros Armon, the new Fairplay tug has a bollard pull of some 90 tons and was handed over in the Port of Rotterdam in May 2015. Significantly reduced NOx emissions were recorded in the course of trials and on the voyage between Spain and Holland: 81 percent below the values currently required by IMO Tier II emission regulations.
The 30-meter tractor tug features a combined diesel-mechanical and diesel-electrical propulsion arrangement. The diesel-electric propulsion system is primarily used when maneuvering in and out of port, with the two main engines cutting in for mechanical propulsion when running at full load. The SCR system minimizes emissions to facilitate environmentally-compatible operation in metropolitan areas.
Source and Image Credit: Rolls-Royce
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