June 2011 - Undersea Defence Technology (UDT) 2011 will be held in London from 7 to 9 June 2011. Jan Wilgenhof of Nevesbu will present a conference paper on the "Performance of the Main Ballast Tank Blowing System". He will attend the event together with J.J. Conesa Giménez and J. García Peláez of Navantia.