Risa

The settled planet of the Risa system Risa has 4 moons - causing the planet to be effected by significant tidal movements of water. It was heavily terraformed at some point during the age of Technology to be vacation planet.

The entire planet is covered in small islands each one a perfect little world for a small group of people to relax on. These islands are surrounded by breaks which means the shallows are calm while the spaces between the islands are rough and filled with harsh currents and swells.

It is this that saved the civilisation from utter indolence and wasteful decadence. When the Age of Strike began it was obvious those trapped on the planet that each island was to small to sustain any sort of fixed population without inbreeding rapidly becoming a problem.

This required the creation of rafts to cross the gaps between islands -a difficult task requiring skill and bravery. and soon this activity was elevated to a cultural idea. Before long the entire culture was driven by wanderlust - a nomadic culture undertaking long journeys simply primarily just for the joy of it. Before settling on an almost perfect island just as lovely as the one they left behind.

Contact with the Imperium was counted as a successful compliance since there was nothing to resist them and the natives seemed to accept it. But it some became clear that the inhabitants were dealing with the Imperium by ignoring it and just living there lives as before. Administrators laid plans to do something more useful with the world but then Alighieri and the XVIII legion arrived and claimed it as their home world.

Now the natives live much as before but now the very best of them join the legion - to begin the furthest journey. Which is not to say that members of the legion don't travel down to join them when an opportunity present itself.

The Legion itself is based out on the 4 moons that surrounded the main planet.

What industry there is came with the Legion. When it was clear that Alighieri had no claim to the world he grew up on the Adeptus Mechanicus gifted him and his legion a small number of mobile refineries and factories which are currently exploiting the somewhat thin asteroid belts of the system.

It is not a planet know for it's resources or strategic location.