Three Al Riyadh (F3000S) class multipurpose anti-air warfare frigates have been built for the Royal Saudi Navy. The first of class, HMS Al Riyadh (812), was commissioned in July 2002. The second of class, HMS Makkah (814), was launched in July 2001 and delivered in April 2004. Stealth features have been included in the design to reduce the radar cross section and infrared, acoustic and electromagnetic signatures. The ship is built to carry two eight-cell Sylver vertical launch systems for the Aster 15 surface-to-air missile, which has a range up to 30km.
SENSOR SUITE The sonar suite is the Thales Underwater Systems CAPTAS 20 towed array sonar. CAPTAS (Combined Active Passive Towed Array Sonar) is a low-frequency variable-depth active sonar. The round radome of the Thales Arabel 3D I-band surveillance and fire control radar is installed on the pyramid mast forward of the hangar and between the two funnels. The Arabel carries out the fire control function for the Aster missiles. Thales long-range air search radar, DRBV 26D Jupiter operating at D band, is forward of the main radar mast. Two Sperry Marine Decca navigation and helicopter control radars are also fitted. COUNTERMEASURES SYSTEMS The electronic warfare suite has been supplied by Thales and includes: DR 3000 Electronic Support Measures (ESM), Altesse communications intercept system, Salamandre B2 radar jammer and TRC 281 communications jammer. Two Sagem Défense Sécurité (formerly EADS Defence & Electronics) Dagaie decoy launchers are also fitted. "The frigate is armed with eight MBDA Exocet MM40 Block II surface-to-surface missiles." DCN SAMAHE HELICOPTER HANDLING SYSTEM The helicopter deck at the stern has a single landing spot for a medium size helicopter, such as the Eurocopter AS 365 Dauphin or the larger AS 532 Cougar or NH90 helicopters. The deck is fitted with the DCN Samahe helicopter handling system. A fully equipped hangar accommodates one helicopter. CODAD PROPULSION SYSTEM The vessel's CODAD (Combined Diesel and Diesel) propulsion system is based on four SEMT Pielstick 16 PA6 STC diesel engines, rated at 5,700kW (7,740hp) each. The diesel engines drive two shafts with Rolls-Royce Kamewa controllable-pitch propellers. DCN has a licence agreement to manufacture these propellers for the Al Riyadh frigates.