Capsize
Just as water seeks its own level, a boat will seek its most stable position; even the “unsinkable" ones. Boats like this shallow V design offer good initial stability, but relatively poor ultimate stability. It doesn’t take much water ingress to upset them, especially if they are overloaded—as it appears that this one (pictured above) was.
There are eight million stories about times when it was better to enjoy the water from the shore, than to try to enjoy the shore from the water—this is one of them.
Sad.
/fl