Liners are a peculiarly Hiroshan form of transport, designed to deal with the fact that the planet had an exceptionally large water surface. Liners are huge, extremely light, and capable of carrying a large amount of cargo within an atmosphere. Built in orbit, current liners use a form of vacuum foam which is expanded inside a lightweight hull, hardening to form a low-density matrix, almost as light as vacuum. Liners typically up to fifteen hundred metres long, five hundred metres wide and, with superstructure, up to five hundred metres high. They use thrust-vectoring lift fans and control vanes to control movement and usually dock on the water. On Hiroshi, liners are generally considered the safest form of transport and there are cargo, passenger and military variants.
Marine MI is a multi-role force of mobile, mechanised infantry whose function is to attack specified targets, realise specific objectives, gain information and to cause disruption to enemy infrastructure. The majority of MI are drop troopers, frequently delivered from orbit by specialist vehicles, and might be considered the space warfare equivalent of twentieth to twenty-second-century paratroopers. The suit is the key advantage of the mobile infantry and offers the soldier enhanced protection, detection, strength, speed and agility. The suit acts to protect the wearer on land, in the air, in space and under water with later variants including AI integration and better health monitoring for the wearer. Standard marine weaponry includes variants of the Multi-Role Assault Rifle which can fire a variety of munitions.
Replication is a somewhat inaccurate name for what is basically a three-dimensional printing process carried out by nanotech enabled print devices. Using this technology, clients can print anything from paper reports and newspapers to components used to build spacecraft. It is one of the most important technologies developed since humans colonised the planets they now call "The Extent".
Travel through a gate, across a hyperspatial interface, is essentially instantaneous. As such, space travel, including all combat, must occur in real space and almost always within the confines of a stellar system. A system is a vast three-dimensional space and navigation within it is normally referenced with respect to that system's primary.
Terraforming is the process of environmentally engineering a planet or moon so that it is better suited to human habitation (more terra-like) but the process is time consuming even assuming a viable candidate is identified. There are some three hundred habitable worlds across The Extent but considerable more non-habitable, most worlds being resource worlds (mining or military) few deemed worthy of a name. Terraforming is split into 4 main phases: Candidate selection, Establishment, Terraforming and Colonisation. Once a planet is stabilised the majority of the terraformers drop into a hibernating state but in some cases, the terraforming effect needs to be maintained and the terraformers remain active to ensure the planet remains habitable.