The incident happened on June 30 around 7.10PM local time at the place called "Badstrand Vlissingen".
At least 7 people were dragged into the estuary of the Scheldt river.
Among the 3 victims are 2 children aged 3 and 5 years old. All victims have been sent to the hospital.
According to an eye-witness the ship was sailing "too fast".
Authorities are investigating the case.

