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5d ago

Navy Commissions USS Massachusetts, a New Virginia-Class Attack Sub, in Boston

The Block IV boat strengthens U.S. undersea power with stealthy, multi‑mission capability.

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The USS Constitution sails next to the new submarine USS Massachusetts during the sub's commissioning ceremony on March 28, 2026.
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Overview

  • The USS Massachusetts, commissioned Saturday at Boston’s Conley Terminal, entered service after a public ceremony led by ship sponsor Sheryl Sandberg.
  • The seventh Block IV Virginia-class boat was built by General Dynamics Electric Boat and HII–Newport News under a teaming deal as the 25th of the class, at a reported cost of about $2.8 billion.
  • The 377-foot, roughly 7,800-ton submarine carries torpedoes and Tomahawk cruise missiles and uses a reactor built to last the ship’s life without refueling.
  • The crew totals about 147 sailors, including 39 women, reflecting the Navy’s shift to submarines designed for mixed‑gender crews.
  • Following commissioning, the boat is expected to report to Groton, Connecticut, as the Virginia class continues to anchor U.S. undersea modernization.