2293 A.D: UPON SIGNING OF THE KHITOMER ACCORDS, Starfleet Command conducted a thorough census of its starlift capabilities, and issued a general commercial call for a new Heavy Freighter design.  A ship which might be fast-tracked from the drawing board to the assembly line in under a year.  Due to the enormous burden soon to be placed on Starfleet logistics—assisting in Klingon disaster relief and recovery, following the Praxis event which precipitated the Khitomer conference—the new Heavy Freighter would need to have rapid deployment and re-deployment capacity.  With minimal on-station loiter required to accept or discharge cargoes.
   At the same time, the USS Juratesh—a Laweya Class freighter operating under a Starfleet merchant charter—had returned to the Isratta shipyards which had produced her ten years before.  Due for standard refit and internal equipment overhaul, the Juratesh was detached from Starfleet service and placed in the hands of Isratta's prototype development department; the engineers already having been deeply committed to a revamp of the basic Laweya concept, even before Starfleet's Heavy Freighter announcement.
     Being an Andorian conglomerate, Isratta corporation was highly motivated to capitalize on the Laweya's extant service record.  Seeing that the basic spaceframe of the Juratesh was sound, Isratta stripped the Juratesh down to her bones and began upgrading both her warp core and her impulse deck; so as to better accommodate the dramatic increase in cargo anticipated with the "trucking" concept Isratta's developers had in mind.  The keystone of which was a radically ambitious plan for the upgraded Laweya to accept not just one, not just two, but four uprated Starfleet commercial warp-capable container modules; thousands of which were already in use across the Federation.
   Inside of 90 days, the Juratesh's internal cargo space had been done away with, and six cargo module docking pylons extended laterally from the spaceframe's spine.  At the same time, the developers realized that doubling the ship's forward profile would exceed the Laweya's prior navigational deflection capacity, so a full navigational deflector dish assembly—similar to that used on many other Starfleet vessels—was built on the underside of the Juratesh's half-saucer primary hull.
     At 120 days, with all major structural modifications complete, the pre-scheduled overhaul of the Juratesh's living spaces commenced, and an initial shakedown itinerary was formulated.
     About this same time Starfleet issued an addendum to its original Heavy Freighter call: given the sensitivity of the newly-established treaty between the Klingon Empire and the Federation—and the likelyhood of Starfleet logistics to encounter rogue or breakaway Klingons refusing to cooperate with treaty stipulations—the new Heavy Freighter was to be armed with a compliment of phaser banks.
     Again, being Andorians, Isratta's designers were only too happy to equip the new Laweya upgrade—which had come to be termed the Super Laweya, for Isratta internal accounting purposes—with phaser weaponry.  The Laweya's original, unarmed design had proven vulnerable in several incidents prior to the Khitomer conference, and Andorian merchant crews especially were not eager to serve aboard ships unable to fight back against hostile aggressors.  Thus four banks of top-of-the-line phasers were implemented to give coverage in all fields of fire.
     When the Juratesh re-launched at 189 days from the time of her initial dry-docking, she looked rather different from the way she'd appeared upon refit receipt.  The up-engined warp core and impulse decks took several weeks of in-system and short interstellar testing, before Juratesh could proceed at Warp 3 to a sister Isratta shipyard in a different solar system, and take on her first two cargo modules.
     Mating of the modules to the cargo pylons proved more troublesome than anticipated.  To the point that the first-run design had to be modified, and the ship returned to her birth yard for still more work.  The cargo modules' mass exerted too much strain on the grapple points, both during conventional impulse travel, and when moving to warp speed.  A series of "buffer tube" extensions were added to the cargo pylons, with self-actuating servos allowing just enough sympathetic motion that the cargo module grapplers would not be damaged during normal cargo operations.
     Juratesh again warped to a nearby sister yard for testing, after which the modified cargo grappling and docking system was declared a success, and the Juratesh could enter an official 90-day trial mission—working extant Starfleet logistics corridors while using an Isratta company captain and crew, as well as a team of developers onboard to deal with problems, rate the Super Laweya's overall performance under normal duty conditions, and gather as much promotional material as possible to presented to Starfleet upon the trial mission's completion.
     Enduring a few more minor teething problems with both engines and cargo systems, the Juratesh eventually met her first real test as a Super Laweya.  Dispatched across the neutral zone, she was temporarily attached to a Federation junket touring important worlds within the Klingon Empire, so as to reassure the Klingons that both Starfleet Command the Federation Council were making good on their promise to devote every effort possible to the Klingon disaster recovery plan.  The Super Laweya (along with two other Heavy Freighter prototypes) were thus shown off to Klingon fleet officers and civilian officials, until—at 278 days from initial receipt for refit—the Juratesh and her parent squadron of ships were set upon by a squadron of rogue Klingons conducting raids on Starfleet logistics operations being carried out within Klingon territory.
     Both of the competitor Heavy Freighter designs experienced problems with their defensive phaser arrays, and had to retreat to the protection of the Remora Class escorts and two Chandley Class frigates providing junket security.  But the Super Laweya's weapons—meticulously tested and re-tested by the Andorians—functioned flawlessly.  Which enabled the Juratesh to return defensive fire against several of the older-type Klingon cruisers, while the escorts and frigates regrouped and drove off the remaining renegades.
     During the engagement, the captain and crew of the Juratesh were credited with disabling at least one of the renegade cruisers, which conducted a self-destruct rather than the commander and crew face certain dishonorable trial (and death) in an Imperial military court.
     When Chancellor Azetbur herself sent a dispatch to Starfleet Command, noting the Juratesh's staying power in an unexpected fight, and thanking the junket for their overall willingness to continue to support both the Klingon High Council and the Khitomer Accords, Isratta immediately sent their sales team to Starfleet procurement.  With a full flight recording of the entire incident, emphasizing the Super Laweya's sturdiness and combat-worthiness, despite being freighted with four full cargo modules, all of which dramatically decreased the ship's maneuverability in emergency situations.
     At 311 days from receipt for refit, the Juratesh journeyed to Earth, where she moored at the mammoth Spacedock in Earth orbit, and was officially re-commissioned into Starfleet—accompanied by a contract to Isratta for a further 400 Super Laweya hulls, to be either refitted from extant Laweya hulls, or built directly from factory components.
     Anticipating the contract, Isratta had halted its Laweya line forty five days earlier, and set about reconfiguring the prior Laweyas half-finished for conversion and service as Super Laweyas.  No less than a dozen new Super Laweya ships were launched by the time a full 365 days had elapsed, from the Juratesh's receipt for refit.  And by the end of the first full year of Super Laweya production, over five dozen hulls had been either commissioned or re-commissioned (from Laweya refit) into Starfleet logistics and merchant service.  Many of them with primarily or even all-Andorian crews, much to the delight of extant "Blue Fleet" officers operating other Starfleet vessels of Andorian design and manufacture.
     Production and refit would accelerate to at least 100 operational hulls per year, until the procurement contract (and subsequent plussing up) with Starfleet Command had been satisfied, and all commercial operators of the Super Laweya had similarly had their orders fulfilled, too. In total, 724 Super Laweyas left the Isratta production yards by 2302 A.D., at which time the Super Laweya joined classes such as the Liberty, Overfield, and the older Cochrane, being ubiquitous throughout Federation space.  Especially the Super Laweya's detachable cargo modules, many thousands of which became permanent fixtures at space colonies along the frontier, or were simply integrated into the architecture of space stations and space platforms wherever such integration seemed expedient.
     By 2309 A.D. Isratta began contemplating an upgade, both to keep the successful Super Laweya production lines going, and to extend the lifespans of extant Super Laweyas continuing to operate under various commercial banners, and Starfleet proper. The third iteration of the Laweya would make no radical alterations to shape or structure (as had been the case with the original refit experiment) but instead focused on strengthening the Heavy Freighter's skeleton, as it pertained to the six cargo pylons, so that a more robust, modern impulse deck could be mounted. The trial runs of this third iteration demonstrated superior maneuverability, even under full load, combined with better energy output, and the Mark III entered production in 2311 A.D. with additional orders having been received from prior customers. Including the great majority of Mark II vessels being returned to the Isratta yards for economy refit to the new specifications.
     Like most Heavy Freighter designs, time and attrition took their toll on the Super Laweya. By 2325 several hundred Laweya and Super Laweya spaceframes had been destroyed, scrapped, or mothballed. But Isratta recognized that the large number of Super Laweyas still in service would provide at least twenty more years of productive usefulness if given one more engine upgrade.  This time, not only was the superstructure improved to handle yet another modernization of the impulse deck, but the warp core was overhauled and modernized as well. Providing the Mark III refit with almost 20% more total power than the Mark II, giving the Heavy Freighter even better defensive effectiveness with its shields and phasers, not to mention greater durability during freightline as well as contingency combat operations.
     The Super Laweya would thus remain in top Starfleet and commercial service well into the 2340s, with the class only gradually being retired in small batches; as larger, more powerful, and more mission-capable Super Heavy Freighter designs began to be developed. And the last Mark III Super Laweya would exit active Starfleet commission in 2355, some six decades after the Juratesh was first brought in for redesign by the Isratta team who originally conceived of the Super Laweya refit.
     It's estimated about 150 Super Laweyas remained in Starfleet Reserve status from 2355 onward, with many more being used for merchant training command, or were simply sold off to private interests who could still get quality light-years out of an aging (but proven) Heavy Freighter design. Including colonial consortiums probing deep into the Beta Quadrant. So that by 2365 somewhere close to 250 Super Laweyas were still gainfully employed to one degree or another, or were kept interstellar-ready at Starfleet Reserve depots throughout the Federation. Able to be rapidly crewed and activated in case of emergencies. Such as the eventual invasion of the Federation by the Borg, or the long and costly Federation war with the Gamma Quadrant's Dominion.