> Garry B
> fired in an inner layer is a barrage of mine rockets
This is provided the sub does not keep the torpedo deep,under the iso-thermal layer until it is needed to come up to attack the target.

The Mine layer is created custom designed for the incoming torpedo. Obviously if the torpedo is deep then the mines will be layed deeper than normal… if it moves shallower as it apporaches the mines then the noise of the torpedo might set off the mines proximity systems or they may not. It is a layer and one opportunity to stop a threat. There is no such thing as a 100% shield.