HMS Trent is the third of five new second-generation patrol ships intended to support the Royal Navy’s maritime security operations.
The 2,000t vessel paid a visit to the South Railway Jetty after completing the first voyage with the ship’s company from the Clyde.
The White Ensign was hoisted for the first time on the vessel during a ceremony in Portsmouth.
HMS Trent commanding officer Lieutenant Commander James Wallington-Smith said: “Today is an important milestone in HMS Trent’s journey. The ship’s company and our partners in BAE Naval Ships have put in a tremendous amount of work to ensure she is ready to be accepted into the fleet.
“Trent now enters the next phase, which will see her develop into a warship, being made ready for sustained patrol operations in the new year.”
The ship will be used for a variety of missions, including anti-smuggling, anti-piracy, maritime defence, and border patrol.
Trent has a 40-strong crew and can accommodate up to 50 troops, as well as Merlin and Wildcat helicopters.
It completed the first sea trials in June. The ship is expected to be commissioned into the navy next year.
Forth, the first in the fleet, set sail for the Falkland Islands last month to take over from HMS Clyde and serve as the guardian of the area.
The five River-class ships will be deployed to perform missions in the UK and overseas, including in the Caribbean, Asia-Pacific and Mediterranean regions.