The ambient temperature phase change launcher is a patented underwater launch system created by NUWC. The launcher aims to be a safer, cheaper, and more environmentally friendly alternative to current underwater launch systems. The launcher uses pressure created by the phase change from liquid to gas of Carbon Dioxide as the driving force to launch the payload. This payload needs to be able to deploy from underwater. The tank containing the pressurized CO2 needs to be less than 25% of the launch cylinder's volume. Furthermore, the maximum acceleration of the payload should not exceed 8g's. Under these constraints, the team has been tasked with continuing the efforts of creating a functional prototype of the patent to determine its feasibility.