B-17 crews in the Blue Water Pacific also had to deal with ditchings and many of those incidents turned tragic.
This is an excellent 1944 training film on how to properly ditch a B-17. It's almost 43 minutes long. It starts out sadly with 9 out of 10 members of a crew dying in a ditching. The survivor determines his next crew will be thoroughly prepared. https://youtu.be/N4xTjvtS5W0