A total of 22 bulk carriers, being built by Yangzhou Guoyu Shipbuilding Co. Ltd in China for Singapore based Pioneer Marine, will feature Wärtsilä Ballast Water Management Systems (BWMS). The Wärtsilä systems will enable the vessels to comply fully with the IMO's ballast water convention. The contracts were finalized in August. Each of the 38,000 DWT vessels will be fitted with two Wärtsilä AQUARIUS UV BWMS, and the scope of supply includes also the commissioning and sea trials of the equipment.