The three SIGMA-class frigates for the Royal Moroccan Navy have been designed according to Schelde Naval Shipbuilding's revolutionary SIGMA-approach and are a further development of the SIGMA-corvettes for the Indonesian Navy. The SIGMA approach applies modularity in many areas, which offers the user great flexibility at reduced costs. The frigates are also known as "FMMM", which stands for Frégates Multi-Missions Marocaines. The first frigate is longer than numbers two and three, to accommodate a VIP-crew and command facilities. The vessels are built according to Lloyds Register Class for unrestricted service and are enhanced by proven naval principles. The superior propulsion and sea keeping capabilities make the SIGMA class frigates perfectly suited for operations in Moroccan territorial waters. Basic functions are maritime patrols and surveillance in the Territorial Waters and EEZ. In addition fishery protection, prevention and protection of natural resources, maritime search and rescue as well as the assigned constabulary tasks in law enforcement at sea will belong to the vessels capabilities. A helicopter deck and hangar for helicopters with a maximum weight of 5 tonnes, with lashing points and refuelling system is provided (landing and take-off up to 9 tonnes). Heli operations can be performed at day and night.