Rijkswaterstaat has a FerryBox installation at their vessel Zirfaea.
FerryBox installation at Zirfeia during World Hydrography Day 2013 ship visit in Scheveningen
OGI=WDMON_FERRYBOX
at http://www.helpdeskwater.nl/. Copy is placed here:DONAR, Rijkswaterstaat ScanFish, rijkswaterstaat ctd