Need a hive of work-bees for that deep space construction project?
Do you have a planetside asset pleading for some serious space-lift capacity?
Perhaps a wing of heavy shuttles are in order so a marine battalion can fulfill the insane whims of the sector's Starfleet Badmiral?
If a mission in the late 23rd century calls for a USS Voyager-number of shuttles, attack drones, work-bees or any other auxiliary craft, the Melvill class has got it covered.