s ▁in ▁the ▁PC ▁series ▁included ▁the ▁PC ▁ 5 0 0 , ▁PC ▁ 1 0 0 0 , ▁PC ▁ 1 4 0 0 , ▁and ▁PC ▁ 1 6 0 0 . ▁ ▁The ▁number ▁in ▁the ▁bomb s ▁design ation ▁correspond ed ▁to ▁the ▁approximate ▁weight ▁of ▁the ▁bomb . ▁ ▁The ▁smaller ▁bomb s ▁had ▁either ▁Am atol ▁or ▁T NT ▁while ▁the ▁larger ▁bomb s ▁were ▁filled ▁more ▁powerful ▁explos ives ▁like ▁R D X ▁and ▁Tri alen ▁to ▁compens ate ▁for ▁their ▁reduced ▁charges . ▁ ▁The ▁PC ▁series ▁of ▁bomb s ▁were ▁fitted ▁with ▁a ▁time ▁delay ▁fu ze ▁which ▁det on ated ▁the ▁bomb ▁after ▁it ▁had ▁pier ced ▁a ▁target ▁destroy ing ▁it ▁with ▁a ▁combination ▁of ▁its ▁bl ast ▁and ▁fragments . ▁ ▁The ▁PC ▁series ▁served ▁as ▁a ▁base ▁for ▁the ▁later ▁PC ▁R S ▁series ▁ro cket ▁prop elled ▁bomb s ▁which ▁were ▁designed ▁to ▁enh ance ▁pen etr ation ▁by ▁increasing ▁their ▁terminal ▁velocity . ▁ ▁Design ▁ ▁The ▁body ▁was ▁of ▁one - pie ce ▁for ged ▁steel ▁construction ▁which ▁was ▁filled ▁through ▁the ▁base ▁with ▁either ▁Am atol ▁or ▁T NT ▁and ▁was ▁fitted ▁with ▁either ▁a ▁sheet ▁steel ▁or ▁mag nes ium ▁al loy ▁ 4 ▁fin ned ▁tail ▁with ▁a ▁cyl ind rical ▁str ut . ▁ ▁There ▁was ▁a ▁single ▁trans verse ▁fu ze ▁pocket ▁near ▁the ▁base ▁of ▁the ▁bomb . ▁ ▁The ▁PC ▁ 5 0 0 ▁was ▁hor izont ally ▁susp