After some re-calculation of the probabilities involved, I revised the previous posting and am fairly confident that it it close to correct. I am less confident about the following, but they may not be too far off. They are also close to what you would get by multiplying the modifiers together and rounding.
Double Hull Damage & No Engine Damage: *1.2.
Double Hull Damage & No Shield Damage: *1.2.
Double Hull Damage & No Weapon Damage: *1.2.
No Hull Damage & Double Engine Damage: *0.9.
No Hull Damage & Double Shield Damage: *0.9.
No Hull Damage & Double Weapons Damage: *0.9.
Double Engine Damage & No Shield Damage: *1.1.
Double Engine Damage & No Weapon Damage: *1.1.
Double Shield Damage & No Engine Damage: *1.1.
Double Shield Damage & No Weapon Damage: *1.1.
Double Weapon Damage & No Engine Damage: *1.1.
Double Weapon Damage & No Shield Damage: *1.1.
Double Hull Damage, Double Engine Damage,& No Shield Damage: *1.6.
Double Hull Damage, Double Engine Damage,& No Weapon Damage: *1.6.
Double Hull Damage, Double Shield Damage,& No Engine Damage: *1.6.
Double Hull Damage, Double Shield Damage,& No Weapon Damage: *1.6.
Double Hull Damage, Double Weapon Damage,& No Engine Damage: *1.6.
Double Hull Damage, Double Weapon Damage,& No Shield Damage: *1.6.
No Hull Damage, Double Engine Damage,& No Shield Damage: *0.8.
No Hull Damage, Double Engine Damage,& No Weapon Damage: *0.8.
No Hull Damage, Double Shield Damage,& No Engine Damage: *0.8.
No Hull Damage, Double Shield Damage,& No Weapon Damage: 0.8.
No Hull Damage, Double Weapon Damage,& No Engine Damage: *0.8.
No Hull Damage, Double Weapon Damage,& No Shield Damage: *0.8.
Double Engine Damage, Double Shield Damage,& No Weapon Damage: *1.3.
Double Engine Damage, No Shield Damage,& Double Weapon Damage: *1.3.
No Engine Damage, Double Shield Damage,& Double Weapon Damage: *1.3.
No Engine Damage, No Shield Damage,& Double Weapon Damage: *1.
No Engine Damage, Double Shield Damage,& No Weapon Damage: *1.
Double Engine Damage, No Shield Damage,& No Weapon Damage: *1.