The photo of the pod is of a different submarine. Look at the photo at the top and compare the size.
Absolutely correct. And that sub has a total complement of 55-60.
Now take a look at the escape pod, count the rungs in the ladder welded on the outside. (I get 10, but a trained photo interpreter may do better.) I estimate 16" spacing which would make the whole thing roughly 15' high. Measure the total height vs diameter at the thick part and I get roughly 11' in diameter. That is 95 sq. ft. Imagine an upper and a lower set of seats, and we get 190 sg. ft. for 60 people. Or about 3 sq. ft. per seat.
It is certainly possible to get 60 men in that space. It is not going to comfortable, but it is not that far below economy class airline seating. Keep in mind that submariners are selected for small stature and it looks very reasonable. Bets the heck out of drowning on the ocean floor.