“On a sunny and warm day, dozens of people jump into the water here,” Sybren Osinga points to the riverbank. He is standing on the IJsseldijk in Kampen and looks out over a small beach. At first glance, it seems like a great place to swim, but according to the supervisor, there are still all kinds of risks. “Look at the cargo ships that sail past here,” he gives as an example. “They have an enormous suction effect. As a result, small children or people who cannot swim well can be pulled further into the river.”
