Damage required to destroy all hangers = 2,781.2 lbs.
Number of rounds required to destroy an undamaged hanger = 2,781.2/projectile strength
Strength of projectiles:
75mm HE / 76mm HE = 156.2 lbs (18 rounds)
3” HE = 140.6 lbs. (20 rounds)
75mm AP / 3” AP / 76mm AP = 78.1 lbs. (36 rounds)
76mm HVAP = 54.6 lbs. (51 rounds)
37mm HE = 31.2 lbs. (90 rounds)
37mm HE Ostwind / 37mm AP = 15.6 lbs. (179 rounds)