Dear Robert Thanks for your answer. Its helpful. Best Regards On Monday, January 4, 2016 11:58 PM, Robert Martin <[log in to unmask]> wrote: Dear Tariq, Aqua-Sim currently supports Rayleigh Attenuation seen in uw_mac/underwaterpropagation.h. Future plans to extend supported propagation models are in works for the next iteration of Aqua-Sim. -Robert On Wed, Dec 30, 2015 at 10:52 PM, Tariq Islam <[log in to unmask]> wrote: Dear Sir Please suggest a propagation model (supported by aquasim) that i could use for my underwater sensor network simulation. For terrestrial networks we using Radio propagation model (TwoRayGround) which won't work for underwater acoustic channel.set val(prop) Propagation/TwoRayGround; Thanking you in anticipation Best Regards