Hallo Gerolf,

Here's a wrong IMO number. I can't blame you. As I see it, to use the "IMO Look-up" properly you will have to know "your" ship, and that's the weak spot of this Look-up system. In this case the "right" Prins Willem-Alexander is a small ferry, built 2004 at Damen Shipyards (De Schelde), Vlissingen. The river cruiser was built in 2003 at De Merwede, Hardinxveld-Giessendam. She is owned by a charity, the Stichting Varende Recreatie, Harderwijk, which provides trips for elderly and bedridden people. This is an inland vessel, so without an IMO numer. I'll give you the ENI number instead, which is 02325776 (ENI = European Number of Identification, introduced in 2007).

Kind regards, Anton

PS: there is a sub-category Inland vessel > Inland passenger vessels