capsize (verb) – to overturn (= to turn upside down)
Here are some examples of how you can use capsize:
Due to a leak, the cruise ship capsized and its passengers had to be rescued.
Our raft capsized in the part of the river that was nicknamed “washing machine.” We all fell off and had to swim.
Pedro’s funny manoeuvres capsized our canoe.
It’s hard to capsize a pedalo bike as they have a stable base.