Starfleet commissioned the first Danube-class starships in 2368. Commonly called "runabouts," they are used primarily for short-range interstellar warp travel. Resembling an large shuttlecraft, the Danube-class runabouts are the smallest registered vessels in Starfleet. The cockpit has seating for four people, including a two-person flight crew, and also contains a two-person transporter pad. The aft section contains a living area, with bunks, a table, and a food replicator. The runabout's aft section design is modular, which allows the vessels to be constructed with mission-specific customizations.| SPECIFICATIONS | U.S.S. RIO GRANDE NCC-72452 | |
| NAME, REGISTRY | U.S.S. Rio Grande, NCC-72452 | |
| STARSHIP CLASS | Danube-Class Runabout | |
| YEAR COMMISSIONED | 2368 | |
| LENGTH | 25 M | |
| WIDTH | 14 M | |
| HEIGHT | 5 M | |
| WEIGHT | 160 MT | |
| DECKS | 1 | |
| CREW COMPLEMENT | 2 (Pilot, Ops); plus 16 passengers | |
| PRIMARY PROPULSION | Matter/Antimatter Reactor (warp core) | |
| SECONDARY PROPULSION | Deuterium Fusion Drive motors (impulse engines) | |
| SUSTAINABLE WARP | 2.0 (Cruise Velocity); 5.0 (Max) | |
| ARMAMENT | Type-V Phaser banks | |
| COMPUTER CORE | 1 Main Computer Core | |
| AUXILIARY CRAFT | n/a |