The USS Voyager is an Epic Grade 4 Explorer and one of the most technologically advanced ships in the fleet, with upgraded sensors and a cruise velocity of warp 9.975. In-game, it opens the Delta Quadrant: build it and you can hunt Isolytic damage Artifacts and ship parts for a range of other vessels, including the Cerritos, Amalgam, and various Grade 4 ships.
You need Operations Level 30 to start defeating Hirogen hostiles in the Delta Quadrant and collecting Hirogen Relics. Refine the Relics in the Voyager refinery to get Deuterium Canister, the resource for its two active abilities. At Operations Level 34, with all blueprints gathered, you can build it. Advanced Sensors uncovers hidden hostiles like the elusive Species 8472. Its activation cost is refunded if no target is found. Astrometrics Scan scans a player's ship and reveals the location of their station. Both cost Deuterium Canister and have a duration and cooldown. Species 8472 Bioships, found in the Velixys system, can only be spotted while Advanced Sensors is active.
Upgrading the Voyager takes Exotic Biotoxins (from Species 8472 Bioships in Velixys) and Anomaly Samples (mined in systems like FSEP-505, FSEP-3819, FSEP-247 and FSEP-001), both refined in the Voyager refinery. Its research nodes also give fleetwide buffs. Below Deck Assembly unlocks Below Deck slots in officer presets. Artifact Hunting Extraordinaire adds a bonus Artifact roll in the common and rare Anomaly Sample refinery. Dismantle Tinkering increases base scrapping speed for all ships. Ship Maintenance Efficiency increases the base cost efficiency for repairing all ships.