
The Navy’s commander of the submarine forces said the service is looking at three tracks for SSN (X), the next generation attack submarine: using the Virginia-class attack submarine, Columbia-class ballistic missile submarine, or a totally new hull form. “We are looking at three different ways to build that out. We’re looking at what can we do to Virginia, what can we do to Columbia, and what do we need to build from scratch. And with studies and initiatives with our…