Atrivis Day 4 The Atrivis Day 4 was a BFF - 1 bulk freighter used by the Alliance to Restore the Republic to ferry supplies . It was part of the freighter group " Atrivis Day " . It was part of a convoy traveling to the Organarms Deep Space Manufacturing Facility that encountered an Imperial Missile Boat . Its presence in this engagement was later replayed in an Imperial holosimulator mission , training pilots for the Missile Boat . Description . " Atrivis Day 4 " was the name of a BFF - 1 bulk freighter working for the Alliance to Restore the Republic during the early years of the Galactic Civil War . Working in conjunction with " Atrivis Day 1 " , " 2 " and " 3 " , the four freighters were collectively known as " Atrivis Day " . The freighter was metallic gray , with some red inner panel . It was equipped with shields and a hyperdrive . History . Rebel service . At the start of the Zaarin insurrection in 4 ABY , " Atrivis Day 4 " was part of an Alliance convoy hauling supplies to the Organarms Deep Space Manufacturing Facility . In addition to the " Atrivis Day " group , the convoy was composed of the Container Transport group " Kempman " , the Modular Conveyor group " Altar Moon " , the freighter group " Rimrunner " and eight other container ships . Military support was provided by the Nebulon - B escort frigate " Dahome " as well as fighters from Red , Gold , and Blue Squadrons . " Atrivis Day 4 " was part of a group of freighters at the forefront of the convoy , hauling raw materials . However , upon reverting from hyperspace , it found the Organarms facility destroyed , the target of a lone Imperial Missile Boat , still in - system . This enemy craft was joined shortly after by the Imperial " Strike " - class medium cruiser " Arjun " . As the small Imperial craft moved to engage " Atrivis Day 4 " and its companion freighters , the rest of the convoy began to arrive in - system , beginning with a number of BTL Y - wing starfighter s and Z - 95 Headhunters from Red Squadron , who moved to attack the Imperial forces . Legacy . The role of the " Atrivis Day 4 " at this battle was later included in an Imperial simulation used to train pilots for the Missile Boat . Such notable pilots as Maarek Stele , an eventual Emperor ' s Hand , trained on this mission . Behind the scenes . " Atrivis Day 4 " was created for LucasArts ' " " ( 1994 ) , the expansion pack to their video game " " . There , it appeared as an enemy vessel in the first simulator mission , training the player in the use of the Missile Boat . These simulator missions were based on in - universe historical missions . Consequently , the actual existence of the " Atrivis Day 1 " in canon is confirmed , but the specific outcome of the original engagement is not . Instead , the simulation allows the player to accomplish the mission to varying degrees of completeness . As the destruction of the " Atrivis Day " group is only a secondary goal for the player , the mission can be accomplished with or without their destruction , leaving uncertainty as to the ship ' s final in - universe fate . The name of this freighter is likely a nod to the Atrivis sector , a sector of the Outer Rim Territories known to be an early hotbed of Rebel activity .