The 90-metre warship, which will be tasked with vital counter-terrorism, anti-smuggling and maritime defence duties, was named HMS Forth in honour of the famous Scottish river in a ceremony at the BAE Systems Scotstoun shipyard.
The ship will soon depart on sea trials before entering service with the Royal Navy in 2018. She is the first of a fleet of five new Batch 2 River-class OPVs being built on the Clyde which are all expected to be in service by 2021.
The work to build HMS Forth and her sister ships is sustaining around 800 Scottish jobs, as well as the critical skills required to build the Type 26 Global Combat Ships, construction of which will begin at the Govan shipyard in the summer, subject to final contract negotiations.
HMS Forth, the fifth Royal Navy vessel to bear the name over the past two centuries, is affiliated with the city of Stirling, maintaining a connection which began when the people of the city adopted a previous ship with the name Forth during the Second World War.
It is an advanced vessel equipped with a 30mm cannon and flight deck capable of accommodating a Merlin helicopter, and manned by a crew of 58 sailors. Displacing around 2,000 tonnes, she has a maximum speed of around 24 knots and can sail 5,500 nautical miles without having to resupply.
The MOD has invested £648 million in the OPV programme, and its delivery is one of the key commitments laid out in the Strategic Defence and Security Review 2015.
The Royal Navy currently operates four Batch 1 Offshore Patrol Vessels, one based in the Falkland Islands and three at HMNB Portsmouth, operating globally on tasks ranging from counter-narcotics operations to Atlantic patrols.