Apparently the Kingdom of Saud is for real on their intentions to pick up one of the U.S. Littoral Combat Ship designs– that of Lockheed’s mono-hull Freedom-class
“The Saudi ships are expected to be armed with a 76mm OTO Melara gun, replacing the 57mm found on US LCSs.
The Saudi ships will still feature an aft mission bay with a stern ramp, as in Freedom-class ships, but will do away with the forward two mission bays fitted in those LCSs.
The propulsion plant is likely to be the same as in Freedom-class ships, although the Saudis may choose different waterjets. Top speed is expected to be in the 37-knot range.
Earlier LoRs specified six corvettes of about 2,500 tons, able to operate an MH-60R helicopter. It’s not clear what designs are considered front-runners, but the Saudis are said to be in discussions with Spanish shipbuilder Navantia, which builds several designs that could be considered.”