Salvos could be fired as full salvos, where all guns were discharged more or less simultaneously, as partial salvos, where half the main battery (usually either the forward after group) fired together, or as split salvos, where one gun of each turret fired together. Each system had its own advantages and disadvantages. Full salvos looked spectacular, but resulted in relatively large patterns which were difficult to spot and which arrived at relatively long intervals, thus making corrections difficult. Partial salvos reduced the pattern size, made spotting easier, and meant that corrections could be made (on the average) twice as often. Split salvos, due to the extreme separation of the guns, lead to the greatest accuracy and, theoretically, to the highest rate of fire as the director could fire as soon as any arbitrarily selected number of guns was ready to shoot.