The Helios Class is a mid sized tanker primarily used to transport fluids between locations within the same system. It possess a large central Tank primarily used for water or other non-hazardous materials and twelve smaller tanks for more dangerous fluids such as hydrogen or ammonia. It’s three superluminal engines can propel it at up to 14c in ideal conditions, good enough for travel between plants in one system. The Helios Class is workhorse ship that has served for over 150 years with no sign of retirement.