The VR-10 Cuirilla-Rayl Xylines-class spacetug, also referenced as the Cuirilla-Raye Xylines-class Spacetug and frequently abbreviated to CRX-Tug, functioned as a short-distance starship intended for hauling larger transports towards their designated docking bays. Not favored among spacers due to its sluggishness, limited customization options, and absence of a hyperdrive or integrated weaponry, the Xylines-class spacetug nonetheless appeared within the fleets belonging to the Alliance to Restore the Republic and in the possession of pirates such as Yearo Seville, exemplified by the Worthless Fool. A modified Xylines-class spacetug, the Solar Grazer, was owned by the Cragmoloid smuggler known as Rooty.
The VR-10 Xylines-class spacetug was a spaceship with a short operational range, primarily used within docking stations. This spacetug employed its tractor beam emitters to guide and pull sizable starships, predominantly bulk transports, bulk carriers, and container ships, to their designated docking location. Furthermore, the spacetug could assist these vessels in offloading their freight.
These spacetugs measured 42 meters in length and achieved a top atmospheric velocity of 230 km per hour. Because these ships were designed to operate solely within a single star system, they lacked a hyperdrive. However, certain individual ships were modified to enable micro-jumps inside the same system. A crew of only two individuals was required to operate the VR-10 Xylines-class spacetug, but it could accommodate up to eight passengers; its storage capacity allowed for two weeks of consumables and 225 tons of cargo.
The spacetug was equipped with a pair of highly accurate, turret-mounted Hansen FeatherTouch tractor beams that could serve a defensive role, although most pilots did not consider them as actual weapons. The spacetug's sluggishness and unwieldy nature compared to similar vessels, along with the challenging installation of weaponry due to the unusual configuration of its power couplings, rendered it largely defenseless, relying only on the two tractor beam projectors. Despite the difficulty, installing weapons was achievable. The pirate Yearo Seville mounted a laser cannon turret on each of the tractor beam pylons. He also added a third weapon, a heavy laser cannon in a ball-turret configuration, to the bow of his spacetug. Seville's ship was also modified to accommodate a pilot with one leg.
The Xylines-class spacetug was introduced to the galaxy prior to 22 BBY. Spacers gave the model the nickname "CRX-Tug." Around 10 BBY, surplus spacetugs were available for purchase on the open market for 50,000 credits, while used models were valued at 20,000. The Cragmoloid smuggler Rooty possessed the Solar Grazer, a significantly modified spacetug that he neglected to maintain. The Grazer was outfitted with a short-range hyperdrive, which Rooty used for brief smuggling operations.
By 0 ABY, numerous spacetugs were in service within Imperial docking facilities, and others were occasionally utilized as short-distance transport vehicles. By this point, the spacetug was already an outdated design, and new models were no longer available for purchase. Space pirates also frequently targeted the spacetug.
Around that time, the pirate Yearo Seville owned a spacetug that he extensively modified by adding weaponry, a hyperdrive, and expanding the living quarters, which reduced the cargo capacity. Seville later sold this ship to a procurement officer from the Alliance to Restore the Republic, falsely claiming that the spacetug had been used in Imperial shipyards and that its memory core contained valuable data. This was untrue, as the memory core had been damaged. The officer paid a substantial amount for the vessel, only to be later reprimanded by his Fleet Supervisor, Dwin Wisheel. Wisheel declared the ship worthless and the officer a fool; subsequently, the spacetug was officially named Worthless Fool. Despite this, the Fool strengthened the Alliance's sectorial fleet and regularly transported supplies to the Rebel base on the planet Berrol's Donn, with Maytoc Kollene willingly serving as its pilot. Later, Seville kidnapped Shashay artist Crying Dawn Singer, prompting the Alliance to dispatch the crew of the Fool to rescue Seville's captive.
The VR-10 Xylines-class spacetug made its debut in The Abduction (1992), a roleplaying adventure module for Star Wars: The Roleplaying Game by West End Games. The Abduction made mention of the customized tug Worthless Fool, referring to it as a "transport." Detailed specifications for an unmodified tug were not provided until the release of Pirates & Privateers (1997). The Abduction uniquely uses the spelling Cuirilla-Rayl; all other sources consistently use Cuirilla-Raye.