Yes, we have used Orca3D Marine CFD to perform simulations of vessels in shallow water and have validated predictions relative to published model test data. Performing this type of simulation requires several modifications to the default simulation generated by the marine template. This includes modifications to the domain size and boundary conditions, along with several other relatively simple changes to the setup. There are some nuances to properly setting up the simulation to ensure that any numerical artifacts in the simulation results are minimized. Please contact us to work together with you to set up your shallow water simulation.