Answer:
The answer is: Float on your back on the upstream side of the craft.
Explanation:
If you happen to have an incident where your small craft capsizes, it is best to "float on your back on the upstream side of the craft."
The "upstream side" refers to the opposing direction of the flow, while the "downstream side" refers to a parallel direction of the flow. The upstream side goes towards the source, while the downstream goes against the source.
In this case, flowing on your back will help you prevent fighting the current. This will allow you to swim with the current by doing "backstrokes." Flowing on the upstream side of the craft is important so you don't meet any obstacles , such as huge rocks that will cause further accident.
Remember not to stand because the current can pull your from under.