The hulls of modern nuclear powered submarines differ from those of diesel powered ones because they are covered with a vibration absorbing anechoic coating instead of normal paint.

because they are covered with a vibration absorbing anechoic coating instead of

because of being covered with a vibration absorbing anechoic coating rather than

the hulls of nuclear powered submarines being covered with a vibration absorbing anechoic coating instead of being coated with

in that the hulls of nuclear powered submarines are covered with a vibration absorbing anechoic coating rather than

in their being covered with a vibration absorbing anechoic coating instead of