Planning Assumptions
Based on Weapons Effects

OP 1172: Performance of Bombs and Projectiles against Shore Installations (9 May 1944)

Blast Fatalities:
430 PSI Peak pressure has a 50/50 chance of killing a man. (OP 1172)
Fragmentation Casualties:
It is assumed that energies of 58 foot/lbs (78.6 joules) are required to produce a personnel casualty when estimating fragmentation effects (OP 1172)