In 'Cities of the Sun', the maintenance cost of a ship is determined by
the number of troop units it may carry ( 0-3 units, 0 GB; 4-6 units, 2 GBs;
etc..).
My question is, every ship in the game can carry 0 to 3 troops, hence
every ship has a maintenance cost of 1 GB ! Something seems wrong here ....