Following the success of the Friah 1 and Friah 2, delivered in 2004, Arabian Gulf Mechanical & Contracting Ltd. has placed an order for three sisterships. The builder, Grandweld of Dubai, has delivered Friah 3 and is currently building Friah 4 and Friah 5. The boats will be 30.5 m overall with a waterline length of 27.12 m and a 6.4-m beam. Each vessel will have a net weight of 107 tons and 25 ton cargo capacity. Open cargo deck area is 65 sq. m. Tankage includes 31,700 liters fuel, 7,560 liters water and 1450 liters of sewage. Like the first two crew boats, propulsion for the vessels will be provided by a pair of Cummins KTA38 M2 rated for 1400 hp each at 1950 rpm. The engines will turn five-blade propellers through ZF-3055 marine gears with 2.5:1 reduction. Design speed is 21 knots.