In March of 2381 the Esquiline's slipstream drive had been installed and she departed on a test flight. Joining Captain Dasht was Admiral Leonard James Akaar, who had the ship set course to Ingraham B so that he could meet Captain Jean-Luc Picard in person aboard the USS Enterprise-E to offer him a promotion. (TNG novel: Losing the Peace) In 2381 the Esquiline was fitted with a Quantum Slipstream Drive and assigned to Project Full Circle, under the command of Captain Parimon Dasht as part of the fleet tasked with exploration of the Delta Quadrant.