In early 2368, the Hermes was docked at Starbase 234's spacedock for repairs. The ship joined Captain Picard's fleet that blockaded the Klingon-Romulan border during the Klingon Civil War. It was prematurely deployed, despite the yard superintendent's belief the ship was not ready for launch. Experienced officers from the USS Enterprise-D augmented the crew of this ship. The ship was one of twenty-three assembled for the fleet and was one of the seventeen chosen for the tachyon network. Identified by its name and registry number, the ship's position in the network was monitored from the Enterprise-D.
When the network was disrupted by a high-energy burst released by the Romulans, the net was no longer effective in a radius of ten million kilometers around the USS Sutherland. Subsequently, Picard ordered the fleet to proceed to Gamma Eridon at maximum warp, where the fleet would attempt to reestablish the net before the Romulans got there. (TNG: "Redemption II")