This type of shuttlecraft had two stub wings positioned below the center line on either side of the craft. There were two small impulse drives located in the aft bulkhead, just below the center line.
The "body" of the craft was dominated by the two large manipulator arms located aft of the cockpit and above the center line. These arms could be used to manipulate large sections of a starships hull during construction.
Shuttles of this type