Delta Flyer

The Delta Flyer was originally a specially designed Starfleet auxiliary craft constructed by the crew of the USS Voyager in the Delta Quadrant in 2375. The vessel was designed to handle environments that would be too hazardous for a standard shuttlecraft and to be slightly larger than the average shuttle, the crew having acknowledged that standard shuttles were of little use in the increasingly hostile and unexplored Delta Quadrant. It incorporated a tetraburnium alloy hull with ultra-aerodynamic contours, retractable warp nacelles, parametallic hull plating, unimatrix shielding, and a Borg-inspired weapon system, including photonic missiles.
Subsequent redesign added pop-out impulse thrusters, which gave the ship greater sublight speeds and pulse phaser weapons.