Do not go to waters if you do not know swimming;
Or take a life jacket, or a rubber tube, or an experienced swimmer with you;
When you go canoeing, amongst three persons, at least two must be knowing the swimming;
Take a mobile with you in a water proof cover;
In case the boat capsizes, do not panick;
With courage swim to the coast if you can;
Just float on waters, and call for rescue.
Mostly, you would be safe.
(Based on a recent experience of three of my close relatives).
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