Each group of units, when created, are organized into a campaign fleet or fleet. If two or more different fleets by the same owner reside at a given astro/base they are automatically combined into a single fleet. The capacity for an owner to manage multiple fleets is dictated by three factors: The player's Computer technology level, the number of bases that player has, and the number of occupations he/she holds. The sum of these three values is that player's campaign fleet limit. Fleets are allowed to move to any Astro , although quick traveling requires Jump Gates. A fleet's purpose or use can vary greatly based upon the size, ranging from simple defense to recycling debris.