So, there is the third component which is called the wave wake. So, wake has three components - one is the boundary layer effect or viscous and frictional wake; the other is the potential wake or pressure wake and the third is the wave wake. This will not occur in case of a submerged body like a submarine, because there is no wake, and the nature of this wake will vary if the draft depth of water was not deep. The nature of a deep water wake is quite different is from that of a shallow water wake.