Erendan

The Forge World of Erendan (/ɛrɛnjdɑːn/) is the primary Forge World in the Levan Sub-Sector and one of the largest in the Mandavi Sector. It is closely affiliated with the Holy War World of Heb, and supplies most of the equipment for their Imperial Guard Regiments.

Erendan is the homeworld of the Legio Amicissimus, a mid sized Titan Legion established late in M40. It is the originator of the Type VI Warhound Titan Hip Assembly and the sole producer of the Erendan Pattern Plasma Gun.

Planetology
The Forge World of Erendan, technically Erendan II, is the second of four planetary bodies in the Erendani System. The innermost world, Erendan I, is unsuitable for major habitation, even by the Mechanicus. However, mining and power collection stations would be developed on its tidally locked dark side from M40 onwards. The Erendan III, separated from the Forge World by the system's two main asteroid belts, is a gas giant with a mass approximately 12 times that of Jupiter in the Sol System. Major gas harvesting operations would begin there as early as M37, although it's moons would not be developed until M40. Erendan IV, also known as Sentinel, is a small cold world, far outside the orbit of Erendan III. Early in M41, Battlefleet Mandavi would establish a base and depot on the world, taking advantage of the proximity of the Forge World to ensure the transfer of supplies to other Anchorages across the Sector.

When the Forge World was first surveyed, it was found to be a Pangea type world, with a single supercontinent surrounded by an ocean. The world has roughly 70% of the surface area of Terra, with its one ocean covering roughly half of it's surface. Unlike the majority of Forge Worlds, Erendan has maintained the majority of its ocean In liquid form, not out of any environmental concerns, but to use as a heat sink. The largest and most powerful machines and production lines in Forge Primus are linked to the deep ocean via ancient superconductors. This allows them to run hotter than even the Mechanicus would normally be able to tolerate, boosting productivity and output.

Erendan was never a lush world, however little remains of its original flora and fauna. The dumping of excess heat in the planetary ocean has killed off all but the simplest of aquatic lifeforms, and few land based life forms can survive the toxic output of the world's machinery.

Forge Primus, Erendan's main settlement, was founded along the east coast of the sole continent. From there, it expanded, gradually incorporating outposts and complexes, until by the end of M41, there was very little Erendani land area outside of Forge Primus. There were, however, numerous offshore extraction facilities, as well as orbital shipyards and outposts throughout the System, by that time.

History
Work in progress