WinGD’s integrated Selective Catalytic Reduction (iSCR) system, the only on-engine NOx reduction solution for marine two-stroke engines, is set for its first commercial deployment following type approval.

The technology, developed by the Swiss marine power specialist, has been tested at Mitsui E&S DU (MESDU) Co’s facility in Aioi, Japan, on three WinGD 5X52-S2.0 engines destined for bulk carriers under construction at a Japanese shipyard.

This milestone follows over two years of service experience with a prototype version. The latest iteration features reductions in material and production costs, an integrated heating unit to facilitate operation with heavy fuel oil, and design enhancements aimed at minimising ammonia slip.