Helios civilian frigate 3D model
In 2451 the Kalaxi Consortium of Ceres purchased the rights to repurchase and refurbish Sentinel class combat frigates that were being retired from service.
In the name of de-militarizing the design, the armor plating was removed, as were most of the primary weapons, though the weapon port mountings remained, a fact that pirates from Concordia have notoriously taken advantage of by re-mounting black market HED lances.
The new design was named Helios civilian frigate and it has proliferated as a popular cheap frigate sold, re-sold, re-furbished, re-built, modified, altered, and otherwise utilized in dozens of roles its original designers never intended. It is currently among the most common frigate classes in production.