The French Navy (French: Marine nationale, pronounced [maʁin nɑsjɔnal], lit. 'National Navy'), informally La Royale (French pronunciation: [la ʁwajal], lit. 'The Royal [One]'), is the maritime arm of the French Armed Forces and one of the four military service branches of France. It is among the largest and most powerful naval forces in the world recognised as being a blue-water navy. The French Navy is capable of operating globally and conducting expeditionary missions, maintaining a significant overseas presence. The French Navy is one of eight naval forces currently operating fixed-wing aircraft carriers, with its flagship Charles de Gaulle being the only nuclear-powered aircraft carrier outside the United States Navy, and one of two non-American vessels to use catapults to launch aircraft.
Founded in the 17th century, the French Navy is one of the oldest navies still in continuous service, with precursors dating back to the Middle Ages. It has taken part in key events in French history, including the Napoleonic Wars and both world wars, and played a critical role in establishing and securing the French colonial empire for over 400 years. The French Navy pioneered several innovations in naval technology, including the first steam-powered ship of the line, first seagoing ironclad warship, first mechanically propelled submarine, first steel-hulled warship, and first armoured cruiser.