How does 'an escape capsule' ensure the safety of 107 submariners? Particularly if they're trapped in one extreme of the boat as was the case with the Kursk.
First of all the russians tend to design escape capsules to fit the entire crew, and secondly in a typical sinking scenario the boat will be flooding from outside damage and most of the crew should have time to make it to the control compartment. Kursk is kind of special in that an onboard torpedo exploded and set off several warheads in the torpedo room, killing almost everyone instantly except the guys in the back.
If these had been installed on US submarines, some 200 men wouldn't have had to perish aboard the Tresher and Scorpion.
