Tanker ships in Star Citizen play a crucial role in supplying spaceships with fuel and other resources. These specialized vessels are designed to store large quantities of fuel and transfer it to other ships when needed. Tankers are essential for long-range travel and military operations by providing fleets with enough fuel to successfully carry out their missions. Their ability to transport and transfer fuel efficiently makes tanker ships indispensable components of the space travel infrastructure in the Star Citizen universe.