After countless failed projects over the years, the dream of linking fleets with sub-Battlecruiser hulls was eventually shelved and relegated to the realm of engineering theory. It remained this way for some time, tempting few starship manufacturers to revisit the challenge, even after the discovery of ancient Sleeper designs and the influx of fullerene-based technology. It was not until the first Strategic Cruiser hulls began appearing in small numbers across the empires that they began to truly appreciate the potential Tech III vessels had for modifications.

This subsystem exploits the latest technological advances afforded by discovery of the ancient Sleeper race's own designs. Optimizations made to the chassis allow for vast improvements to be made to a Tengu's agility and base velocity. Although the various layout optimizations sacrifice other options for propulsion customization, the flow-on effects from an improvement in base agility make it an attractive upgrade for those whose Tech III vessels are in need of an overall mobility increase.

The ancient Sleeper race was known to have mastered various sustainable energy technologies including thermoelectric systems, which they usually built directly into a vessel's hull. Capsuleer reverse-engineers took little time to adapt salvaged versions of these Sleeper energy systems into their own modular Tech III vessel pieces.