Pentagon Approves General Dynamics Submarine: The decision means the company’s Electric Boat Division in Groton, Conn., will have new attack submarines to build once it completes work on a second $2.5-billion Navy Seawolf, the company said. The project could be worth at least $60 billion to the company, it said. There are plans for a third Seawolf, but they are indefinite, officials said. The new submarine will be smaller and less expensive than the Seawolf and adept at operating close to shore. Planners say near-shore operations will dominate future missions. The Navy wants more than 40 of the new submarines, projected to cost $1.5 billion each.