Features: The 11-meter-long Naval Special Warfare Rigid Hull Inflatable Boats (RHIB) are constructed of composites with an inflatable tube gunwale made of reinforced fabric. They can operate in heavy seas and winds of 45 knots, but for other than heavy-weather training, the Navy limits its use to somewhat milder sea conditions (wind speed is less than 34 knots). The RHIB carries a crew of three and a SEAL element.