I will give it my best shot Dis1 fire at lower range but can still cause the same amount of damage but are mount only on FF
Dis 2 fires at a medium range and can still cuase the same amount of damage and are on DDs
Dis 3 fires at longer range over 30 and can cuase the same amount of damage and are mounted on CLs and
CAs
Dis 4 fires at further ranges and cuases the same amont of damage and are mounted on BCHs,DNs,BBs,
Starbase and Battlestations
Dis4 is a heavy disruptor more like a beam weapon that can leak through enemy shields and cuase hull
damage.
I hope this is the information you want as I did look them up on my chart and books.I could go into greater
detail but it would be long.I believe there is a read me text file in your the game somewhere.