engines. An all-aluminium structure is used throughout the Atlantic's airframe; corrosion is alleged to be a considerable problem due to environmental factors imposed by the maritime environment. The Atlantic was designed for its purpose, instead of refitting or modifying existing designs. Though the primary mission of the Atlantic is anti-submarine and anti-surface warfare, its secondary roles include search and rescue, mine laying and detection and long-range maritime surveillance. The Atlantic can carry either eight guided ASW torpedoes such as Mk 46 Torpedo, or 12 depth charges, or two AM.39 Exocet anti-ship missiles in its internal bomb bay. German Atlantics usually carried Mk 46s only and flew unarmed during the last years of their service. Italian Atlantics have been periodically armed with NATO-provided nuclear bombs. In French service, 18 modernised Atlantique ATL2 are being equipped with various new avionics and onboard sensors. Such systems include the Searchmaster derived from RBE2-AA active electronically scanned array radar developed for Dassault Rafale, new digital acoustic processing systems, a Thales-manufactured identification friend or foe system, and DCNS-developed LOTI (Logiciel Opérationnel de Traitement de l'Information) combat mission software. Operational history In 1987, a single Signals Intelligence (SIGINT) Atlanique was operated by France as an airborne headquarters during Opération Épervier, the French intervention against Libyan military units which had been deployed into neighbouring Chad. Communications intercepted by the Atlantique were immediately decoded and translated before being used to conduct strikes upon Libyan forces with greater accuracy. The German Marineflieger operated a fleet of Atlantics between 1963 and 2005. A number of these aircraft were modified for SIGINT work and were based at Nordholz Naval Airbase. During the Cold War, they commonly flew across the Baltic Sea and along the border with East Germany; these flights often had American and British intelligence personnel on board in addition to their German crews. During the 1990s, Germany deployed SIGINT Atlantics to observe the United Nations embargo of Yugoslavia and for reconnaissance flights during the Kosovo War in 1999. In 1992, Germany was considering replacing its Atlantics in the maritime patrol role, the modernised Atlantic-2 was considered to be a frontrunner to be the replacement. In 1996, the planned procurement of a replacement was delayed in favour of a life extension program to enable the Atlantic fleet to continue in service for a further decade. Germany ultimately elected to replace its Atlantics with a number of secondhand Lockheed P-3 Orions procured