I will try and get the thread back on track......with a bit more information.
You are carrying out a deck landing. The aircraft is fitted with floats that can be inflated manually or automatically on impact and the crew are all HUET trained. While alongside the ship you suffer an engine failure and unable to fly away due to height / performance issues you carry out a controlled ditching into the sea. The issue I was describing is whether with one cabin door open you are more likely to turn upside down than with both cabin doors closed.
Any advice welcome.