General Dynamics Electric Boat (GDEB) has announced that the future Virginia-class submarine USS Vermont (SSN 792) has wrapped up alpha sea trials.

The announcement was made via its official twitter handle.

On 15 March, the pre-commissioning unit (PCU) Vermont left for alpha sea trials and returned on 18 March.

The trials are also referred to a submarine’s first underway period. It is conducted to test the submarine’s propulsion plant and the initial tightness dive.

In October 2018, the submarine was christened at General Dynamics Electric Boat in Groton, Connecticut.

It is the third US Navy ship that was christened with the name of the ‘Green Mountain State’.

The submarine’s sponsor is former US Navy research, development and acquisition deputy assistant secretary Gloria Valdez.

It is the 19th ship of the Virginia-class and the first of ten Virginia-class Block IV submarines. The construction of the vessel started in 2014.

Built to operate in littoral and deep waters, the Virginia-class submarines can be used for anti-submarine warfare and anti-surface ship, special operation forces support, and other warfare operations.

It can also be deployed for missions for intelligence, surveillance, and reconnaissance.

The USS Delaware (SSN-791), which is the 18th Virginia-class submarine, was handed over to the US Navy in 2019.

Last year, the US Navy awarded a $22bn contract to GDEB and its partner Huntington Ingalls Industries’ Newport News Shipbuilding division (HII-NNS) for the construction of nine new Block V Virginia-class submarines.