Mark 80 Series Unguided bombs

This could be somewhat offtopic, but you guys should know this stuff:

I'm playing game "Eurofighter Typhoon" and I'm sent to intercept and destroy
8 hovercrafts on sea. They are fast, have some armour ( they are hard to
destroy with cannon ) and defend themselves with AA guns. Now, I'm equiped
with some AtA missiles, Mauser 27 mm AtG cannon and mark 80 series unguided
bombs ( on HUD named m83f ). How am I supposed to destroy 8 fast hovercrafts
with 5 unguided bombs?