These are very biased news and in fact they are wrong. For starters, only the first submarine has a floatability problem. The other submarines in the series are larger, therefore they have no problem. Now, why has the fist submarine (the original design) a floatability problem? Because the Navy asked for more equipment (electronic equipment, weapons, etc) and more comfortable cabins for the sailors than originally planned. It is not a design problem but a modifications problem and this is very very very frequent in large projects, especially if military. The changes have been taken into account in the design for the second and subsequent submarines (S81, S82, etc). The first submarine (S80) will be fixed by making it a bit longer and adding some floating aids. Source: I work in this project. Next time you want to say stupid things about very serious projects, please warn us you are drunk.
J D Exposito