This is used to determine a player's maximum number of ships they may own during an event.
This number is set at the start of an event when the player builds their command and cannot be changed once it is set.
The formula for maximum ships is:
Max_Ships = Fleet_Points x Sectors_Owned
Since fleet points cannot be changed once a command is built, the only way for a player to increase their maximum allowed ship quantity is to gain more sectors.