Stelios Kyriacou, Technical Director – Wärtsilä Ballast Water Management Systems presenation during the 2015 GREEN4SEA Forum The presentation introduces the ballast water issues in order to act as a reminder of the reasons for the ballast water convention.  The international and local regulations are examined from the standpoint of performance and equipment type approval processes. Finally the Wärtsilä BWMS equipment is briefly presented with focus on the USCG approval testing of the AQUARIUS EC BWMS electro-chlorination system.   First of all I would like to introduce Wartsila, the engine manufacturer as known by most that has an extensive environmental product portfolio. Wartsila recognises that no one ballast water treatment solution will be suitable across a fleet that is traversing the oceans of the world, in very different climatic conditions and very big differences in terms of flow requirements etc. Therefore, Wartsila decided that the only way to move forward is by means of developing two technical solutions under the name Wartsila Aquarius.  The first is based on filter and UV, and the other, is filtration with side stream Electro-Chlorination. Both systems have been successfully IMO tested and type approved.  Both systems have also a USCG AMS acceptance and accreditation and both are...