Retaliator's size 9 torpedoes vs various targets. No animals were harmed making this video.
Short cuts to the action:
Size 9 torpedo vs Aurora MR: https://youtu.be/M5X6Ug1ajdo?t=7m18s
Size 9 torpedo vs Sabre: https://youtu.be/M5X6Ug1ajdo?t=8m28s
Size 9 torpedo vs Freelancer: https://youtu.be/M5X6Ug1ajdo?t=9m41s
Size 9 torpedo vs Constellation Andromeda: https://youtu.be/M5X6Ug1ajdo?t=10m36s
Size 9 torpedo vs Starfarer Gemini: https://youtu.be/M5X6Ug1ajdo?t=11m58s
Results so far: Everything below Constellation:
1 Size 9 Torpedo = kill
( I don't have a Vanguard yet, will get one soon, might be able to survive one size 9 torpedo)
Constellation
1 size 9 torpedo = shields down, hull yellow, can still fly, doesn't look too good though
2 size 9 torpedoes = kill
Caterpillar
1 size 9 torpedo = shields down to 20%, no damage
2 size 9 torpeodes = shields down, hull red - orange - yellow, Caterpillar doesn't respond to controls, weapons don't work
3 size 9 torpedoes = kill
Starfarer Gemini
1 size 9 torpedo = shields down to 40%, no damage
2 size 9 torpeodes = shields down, no damage
3 size 9 torpedoes = shields down, hull yellow, starfarer doesn't respond to controls, no weapons
4 size 9 torpedoes = shields down, hull yellow - orange, starfarer doesn't respond to controls, no weapons
5 size 9 torpedoes = kill
...
https://www.youtube.com/watch?v=M5X6Ug1ajdo