The focus of critical U.S. programs on Homeland Security and Homeland Defense applications, and on the brown water navies of potential adversaries elicits a need for understanding and visualizing the near-shore land and maritime environments. The goal of this project is to develop a windows application that will provide a near real-time visual depiction of wave, wind, or other environmental elements' impact on the littoral environment that can be used as an aid to decision makers in their planning/response efforts. To achieve our goal we will use our latest commercially available PC-based military simulation. Our commercial off-the-shelf (COTS) naval strategy simulation, Sonalysts Combat Simulations - Dangerous Waters (registered trademark), includes high fidelity 3D micro-simulations of subsurface, surface, and air platforms that also include environmental characteristics such as day/night, currents, wind and stormy weather. The primary focus of this simulation is in the deep water environment. We will modify this engine as necessary to provide a realistic animation of the shallow water environment that exists within the littoral zone. We intend to show the feasibility of performing this shallow water visualization process through a proof of concept application developed during this Phase I period of nine months. This proof of concept will demonstrate a computer-based tool capable of providing fairly rapid rendering and realistic visualization of a littoral environment that is composed of varying elements such as wind speed and direction, wave height, periodicity, and direction.