
www.Usenet.com
| <-- __Chronological__ --> | <-- __Thread__ --> |
IIRC, that would be the longest production run ever. The Sovs never built subs of the same design for that long, and the WW1 & 2 runs, while producing loads of boats, were very compressed in time.
| <-- __Chronological__ --> | <-- __Thread__ --> |