
The top Navy officer for procuring and sustaining ballistic missile submarines (SSBNs) this week noted there are risks in extending the life of some of the current Ohio-class SSBNs to add margin to the new Columbia-class SSBNs, but lessons from converted guided-missile submarines (SSGNs) will help “Right now we have not operated submarines out to 42 years. We’ve come close with some fast attack submarines that we’ve had out in the 40-year range but it’s kind of unchartered territory so…