Ouessant (S623) is an Agosta-class submarine built for the French Navy. She was completed at the Arsenal de Cherbourg in 1978 and served the French Navy until her 2001 decommissioning. From 2005 to 2009, Ouessant was employed as a training vessel to train Royal Malaysian Navy personnel who will operate the three French-built Scorpène-class submarines planned for the Royal Malaysian Navy. Despite official statements in 2009 that Ouessant had been sold to Malaysia, the position remained unclear. Because of the Ouessant's role in the establishment of the Malaysian submarine forces, plans to return the vessel to Malaysia to serve as a museum ship were announced in July 2009.; Ouessant was formally transferred to the Malaysian Government on 23 September 2011 to be transported to Klebang, Malacc