The GR-75 medium transport, also known as the Gallofree medium transport or Rebel transport, was a clamshell-hulled transport produced by Gallofree Yards, Inc. Many of these transports served the Alliance Fleet during the Galactic Civil War, including playing a pivotal role in the evacuation of the Rebellion's Echo Base during the Battle of Hoth.
A sister design to the civilian GR-45 model, the GR-75 was used by freight drivers and shipping firms to haul cargo.
The transport's outer hull was like a thick shell with the interior entirely open for cargo pods. This open-space design could fit up to 19,000 metric tons of cargo into the 90 meter long ship. Modular cargo pods greatly sped up the loading and unloading process.
When the transport was at its cargo capacity, a magnetic shield locked the modules in place, while at the same time kept out the vacuum of space. The factory model included space for forty passengers, but almost all ships traded it for increased cargo storage.
Focused entirely on maximizing cargo space, GR-75 transports were armed with four turreted twin laser cannons, a deflector shield produced by the shield generator pod above the stern, a meager Class 4 hyperdrive, and a sublight engine array capable of achieving a top atmospheric speed of 650 kilometers per hour. While inexpensive, the GR-75 was notorious for its high maintenance requirements.
The design proved popular with Galactic Republic forces, and the ships were used as resupply vessels during the Clone Wars. The Galactic Empire used at least one known unit, the Shackles of Nizon, which saw service as a slave ship.
Many GR-75 transports were acquired by the Rebel Alliance due to their low cost and ready access to spare parts. The transports had hulls impenetrable by Imperial sensors and were additionally equipped with sensor jammers, making them undetectable to Imperial sensors, thus reducing the chances of Imperials detecting Rebel supply runs. Not intended for combat, GR-75s were commonly placed at the center of Alliance fleet formations and relied on starfighter support in blockade-running missions. After Gallofree Yards went bankrupt in 3 BBY, the majority of the remaining stock of ships found its way into the Alliance fleet.
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