Maneuverability has had a considerable impact on the amphibious hovercraft (ACV) development. The maneuverability of an ACV is rather different from conventional ships, vehicles, and airplanes, and therefore, needs special features to provide adequate maneuvering power. The essentials are: the ACV is bound to flat surface; drag a little in all horizontal directions; direct generation of control forces needed to provide centripetal forces to maneuver the craft around comers. The maneuverability of an SES and a high-speed catamaran or a high-speed monohull is all similar, because there is no air leakage under the main part of SES sidewalls. Drifting does not occur during turning, except in the case of an SES with thin sidewalls and at a very high speed. There are a lot of possible control surfaces that can be mounted on an ACV. They can be divided into three groups, i.e., rudder equipment, air propulsion systems, and control surfaces affecting the cushion force. Using a computer analysis for predicting the maneuverability of a craft, the time and cost of the model and the full-scale ship tests on maneuverability may be reduced significantly. Thus, computer analysis is a tool that can be used by designers to analyze the sensitivity of changes to control surfaces on maneuverability at the initial design phase of a craft.