 This effect is likely to prove less catastrophic on a much larger hull, for instance that of an aircraft carrier.The damage that may be caused by a torpedo depends on the "shock factor value", a combination of the initial strength of the explosion and of the distance between the target and the detonation.When taken in reference to ship hull plating, the term "hull shock factor" (HSF) is used, while keel damage is termed "keel shock factor" (KSF).