The Bulwark was designed in a cooperative venture between Bristol and Kress. Built to match the demands of the wild frontier represented by the Independent Worlds, it represents a blend of sturdy reinforcements and an expanded berth. This allows the ship to ferry large quantities of cargo, crew, or perhaps both in relative safety.

Just like Kress' snubcraft line, the ship was originally designed in the pursuit of versatility. However, Bristol requirements necessitated revisions which saw the addition of heavier armor and dedicating a section of the cargo bay to fit a snubcraft hangar and the various amenities required. This is often the most controversial aspect of the vessel as the inclusion of a hangar resulted in a marked decrease in flexibility and range, as a significant amount of crew, material, and fuel are required to properly service snubcraft.

Each Bulwark built is a massive strain on Bristol as the ship lacks the numerous buyers of other license built Kress ships and parts. The ships are currently often maintained in repurposed salvage scaffolds, complicating the process. As such, the Bulwark only sees a slow spread across other organizations. As the sole supplier of parts for the exploration craft, costs to repair are exorbitant and often require a return to Bristol Bay.