HMS York is heading to Libya to deliver aid to the crisis-hit country and pick up any British nationals still stranded there.
The Portsmouth-based destroyer set sail to Benghazi from Malta this morning.
Her deployment follows two voyages to Libya by the frigate HMS Cumberland, who has evacuated 400 people from Benghazi.
York left Portsmouth on February 19 for a five-month deployment to the South Atlantic.
But after she made a stop over in Gibraltar last week, the destroyer was ordered to remain in the Mediterranean on high alert to react to the events in Libya.
She is expected to come alongside in Benghazi later tonight.
A statement from the Foreign Office said: ‘HMS York is now on its way to Benghazi to pick up any remaining British Nationals wishing to leave. Those who can travel easily to Benghazi should make their way to the port. A Rapid Deployment Team will be on board to provide consular assistance. Estimated arrival and departure times will be confirmed shortly.’