The Huntington Ingalls Industries’ (HII) newest Virginia-class submarine Delaware returns to the Newport News Shipbuilding division following its first set of sea trials with three HII-built aircraft carriers visible in the distance at Norfolk Naval Station.

The submarine Delaware SSN 791, being in the final stages of construction, spent 3 days at sea completing tests of its systems, components and compartments. The submarine submerged for the first time and performed high-speed maneuvers on the surface and underwater.

The submarine is scheduled to undergo a round of acceptance trials before it is delivered.

“Delaware performed well during sea trials, which is a testament to the skill and craftsmanship of the incredible team of shipbuilders who are working to uphold our high standards of quality,” said Dave Bolcar, Newport News’ vice president of submarine construction. “We look forward to continuing our testing program to deliver the submarine to the U.S. Navy later this year.”

More than 10,000 shipbuilders from Newport News and teaming partner General Dynamics Electric Boat and thousands of companies across 48 states have participated in Delaware’s construction since the very beginning in September 2013.