Keppel Nantong shipyard has launched a 3,500m³ trailing suction hopper dredger being built for Jan De Nul.
Diogo Cão is the second of three dredgers to be launched, equipped with an exhaust gas treatment system filtering out and virtually eliminating many pollutants from the exhaust gases.
In total, Jan De Nul ordered six such vessels, three small 3,500m³ vessels, two medium-sized 6,000m³ dredgers and a larger vessel at 18,000m³.
All six vessels are diesel-electrical powered, with engines allowing optimal use of generated power but with low fuel consumption and emissions.
In addition, the vessels are equipped with a two stage highly efficient exhaust gas filter system, resulting in emissions complying with the European Stage V regulations for inland waterway vessels.