We would like to invite you to the next meeting on Tuesday afternoon, 3 September 2019. Location: Enterprises Jan De Nul N.V., Tragel 60, 9308 Aalst (district of Hofstade), Belgium (see map below). The workshop consists of four fascinating lectures, 2 more fundamentally focused before the break and 2 more practically focused after the break, with international speakers. 13:45-14:10 Walk-in and coffee 14:10-14:15 Opening by the chairman Alain De Wulf 14:15-14:45 “LAT as chart date - why actually? by Dr. Cornelis Slobbe. 14:45-15:15 "Integrating the gravity field into bathymetric reference levels" by Drs. Jeffrey Verbeurght 15:15-15:45 Break, tea / coffee 15:45-16:15 “The importance of Reference Systems for trajectory control: How to obtain a Reflection trajectory in harsh conditions?” By Sébastien Manigot, Sales Engineer, SBG Systems, France. 16:15-16:45 "Vertical references in practice", by Joris De Winne, Jan De Nul. 16:45-17:30 Drinks offered by dredging company Jan De Nul.