All it takes on a boat is a moment of carelessness and levity and anything can happen. The proof is in the video below, where two boys speed past the side of a boat before swerving abruptly and completely losing control of the dinghy they are riding in. By now unmanageable, the dinghy ends its course against a boat moored not far away. It is unclear from the video whether there are any casualties or injuries, but the probability is certainly high.
Inattention is among the 10 most frequent causes of accidents at sea (CLICK HERE)
The source of the video is the Apneando Facebook page
https://www.facebook.com/apneando/videos/2330086247239547/?t=10