The Outback AUX-15S "Brumby" Service Skiff is a small spacecraft in its own right designed for extended duration EVA missions. In addition to a days long oxygen supply, it has extensive RCS tanks and oversized manoeuvring thrusters to allow for tug missions.
Unlike its smaller AUX-15R "Stockhorse" variant, the Brumby has additional control systems, and two types of tool mounts, allowing the addition of robotic arms, or even a small weapons system.
These are favourite auxiliary craft of mining vessels, especially where fine mining techniques are required.
They are also rated for limited flight in an an Earth-like gravity well and atmosphere, although the propellant tanks and laden weight greatly reduce the flight time to about twenty-fifteen minutes.