Lockheed Martin MMSC (Multi-Mission Surface Combatant) is a derivative of the US Navy's Freedom-class Littoral Combat Ship (LCS). It was selected for the Royal Saudi Naval Forces' (RSNF) multi-mission surface combat ship requirement.
The US State Department approved a possible $11.25bn foreign military sale (FMS) of four MMSCs and associated equipment to the Kingdom of Saudi Arabia in October 2015. A letter of offer and acceptance for the sale was signed by the US Navy and Saudi Arabia in May 2017.