Stern wave - reduction in wave making resistance

Hi

I am modelling a dump barge that has dimensions 72 x 18 x 2.8 m in 2 m water at 1.4m draft. CFD simulations show the squat and trim of the vessel within acceptable limits but the trough wave at the stern is around 1 m compared to 0.7 m in forward. Consequently, the viscous pressure resistance and wave making resistance at the stern is on a higher side than at the forward. Please advise on how to reduce this without altering the length of the barge.

 

What is the shape of the barge?

 

+1 re Gonzo's question - is the barge a rectangular brick with a bit of rake at the fore and aft ends, or a bit more streamlined?

Are you really towing it in only 2 metres of water depth and a draft of 1.4 metres, thus giving a clearance under the keel of only 0.6 metres?

 

You know bad powering/sailing/maneuvering vessels are called a "barge" for a reason....right? That's what you get when you use a barge hull form. And water depth to draft isn't helping you any which is the reason for the high stern wave....have you ever looked at shallow water squat?