The development of the French Navy slowed down in the beginning of the 20th century, and as a result, it was outnumbered by the German and US Navies. It was late to introduce new
dreadnought battleships and
light cruisers, and it entered the First World War with relatively few modern vessels: only one dreadnought in commission at war's start, with all four
Courbets by the end of 1914 and three improved dreadnoughts by mid-1916. During the war, the main French effort was on land. While capital ships already on the ways were completed, few new warships were laid down. Despite its dated roster, the Marine Nationale performed well in World War I. The main operation of the French Navy was the
Dardanelles Campaign. France's most significant losses during the war were four pre-dreadnought battleships, victims of mines and
U-boat torpedoes. A number of major ships of the French Navy at the outbreak / end of World War I: •
dreadnought battleships: 4/7 •
pre-dreadnought battleships: 17/13 •
armoured cruisers: 22/18 •
protected cruisers: 13/12 •
destroyers: 35/42 (capacity over 500 tons) •
torpedo boats: 180/164 •
submarines: 50/61
The first proto-aircraft carrier The invention of the
seaplane in 1910 with the French
Fabre Hydravion led to the earliest development of ships designed to carry aircraft,
float planes. In 1911 the French Navy became the first
seaplane carrier. She was commissioned as a seaplane tender, and carried float-planes in hangars on the main deck, from where they were lowered onto the sea with a crane.
Foudre was further modified in November 1913 with a 10-metre flat deck to launch her seaplanes.
Genesis of the flat-deck carrier As heavier-than-air aircraft developed in the early 20th century, various navies began to take an interest in their potential use as scouts for their big gun warships. In 1909 the French inventor
Clément Ader published in his book ''
L'Aviation Militaire'' the description of a ship to operate airplanes at sea, with a flat flight deck, an island superstructure, deck elevators and a hangar bay. That year the US Naval Attaché in Paris sent a report on his observations and the first experiments to test the concept were made in the United States from 1910.
Fleet construction between the World Wars Every naval fleet consists of a variety of ships of different sizes, and no fleet has enough resources to make every vessel supreme in its class. Nonetheless, different countries strive to excel in particular classes. Between the world wars, the French fleet was remarkable in its building of small numbers of ships that were "over the top" with relation to their equivalents of other powers. For example, the French chose to build "super-destroyers" which were deemed during
World War II by the
Allies as the equivalent of light cruisers. This was a way of bypassing the
Treaty of Washington, which imposed restrictions on cruisers and battleships, but not on destroyers and smaller units. The of
destroyer is still the world's fastest class of destroyer. The submarine was the largest and most powerful of its day. In 1933, the French Navy was considering building a super-battleship, the , but the plans were canceled when the Germans produced the so-called "pocket battleships"; the French responded with a class of two ships of the type, a
fast battleship class falling somewhere in between battlecruisers and battleships. The large battleship niche was filled with the .
Second World War At the outset of the war, the French Navy participated in a number of operations against the
Axis powers, patrolling the Atlantic and bombarding
Genoa. The French surrender and its armistice terms, however, completely changed the situation: the French fleet immediately withdrew from the fight.
Destruction of the French fleet and Vichy France The British perceived the French fleet as a potentially lethal threat, should the French become formal enemies or, more likely, should
Nazi Germany's
Kriegsmarine gain control. It was essential that they should be put out of action. Some vessels were in British-controlled ports in Britain or Egypt and these were either persuaded to re-join the Allies as
Free French ships or were boarded and disarmed. Important parts of the fleet, however, were in
Dakar and
Mers-el-Kebir. The Royal Navy delivered an ultimatum but, when agreement proved impossible, they opened fire and sank or damaged much of the French fleet (
Operation Catapult) on 3 July 1940, to stop the fleet from falling into Axis hands. The action soured
Anglo-French relations and inhibited further defections to the Allies. From this point on, the ships remaining in
Vichy French hands spent the war trying to observe neutrality towards the Axis powers, while avoiding capture by the Allies and the Free French. They obtained anecdotal tactical successes which weighted for nought against the overall strategic disaster, like the battles of
Dakar and
Ko Chang. In November, 1942, the Allies invaded
French North Africa. In response, the Germans occupied (
Case Anton) Vichy France, including the French naval port of
Toulon, where the main part of the surviving French fleet lay. This was a major German objective and forces under SS command had been detailed to capture them (Operation
Lila). French naval authorities were divided on their response: Admiral
Jean de Laborde, the commander of the Forces de Haute Mer (the High Seas Fleet) advocated sailing to attack the Allied invasion fleet while others, such as the Vichy Secretary of the Navy, Contre-Amiral
Gabriel Auphan favoured joining the Allies. On several warships, there were spontaneous demonstrations in favour of sailing with the Allies, chanting "
Vive de Gaulle! Appareillage!". The orders to French commanders to scuttle their ships in case of an attempted take-over had been reinforced, however, and, often despite the presence of German troops, this was done in the
scuttling of the French fleet at Toulon. No capital ships and few others were taken in reparable condition. A few ships fled Toulon and joined the Allies, notably the submarine .
Free French Naval Forces In the wake of the
Armistice and the
Appeal of 18 June,
Charles de Gaulle founded the
Free French Forces, including a naval arm, the Free Naval French Forces (
Forces navales françaises libres, FNFL). To distinguish the FNFL from the Vichy French forces, Vice-Admiral
Émile Muselier created the bow flag displaying the French colours with a red
cross of Lorraine, and a cocarde also featuring the cross of Lorraine for aircraft. The French fleet was widely dispersed. Some vessels were in port in France; others had escaped from France to British-controlled ports, mainly in Britain itself or
Alexandria in Egypt. At the first stage of
Operation Catapult, the ships in the British ports of
Plymouth and
Portsmouth were simply boarded on the night of 3 July 1940. The then-largest
submarine in the world, the , which had sought refuge in
Portsmouth in June 1940 following the
German invasion of France, made an effort to resist the boarding. In capturing the submarine, two British officers and one French sailor were killed. Other ships were the two obsolete battleships and , the destroyers and the , 8 torpedo boats, 5 submarines and a number of other ships of lesser importance. Most of these ships were surrendered to the FNFL (notably the submarine
Surcouf), and other were leased by the British (like the corvette ), constituting the embryo of a naval force. When French Africa joined the Allies, important ships based in
Dakar were obtained (notably the cruisers , , , , and the battleship ). Beside warships, the FNFL developed special forces: Captain
Philippe Kieffer took inspiration from the British commandos to train new units of "
Commandos Fusiliers-Marins", which later would become the
Commandos Marine. These commandos distinguished themselves during the
Battle of Normandy, climbing cliffs under fire to destroy German shore batteries. Captain
Henri Honoré d'Estienne d'Orves attempted to unite the
French Resistance, and became an inspiring symbol when he was arrested, tortured by the
Gestapo and executed. The FNFL also harboured technical innovators, like Captain
Jacques Cousteau, who invented the modern
aqua-lung, and
Yves Rocard, who improved
radar. The aqua-lung became a major improvement for commando operations. French warships of the FNFL supported the landings in southern France (
Operation Dragoon) and Normandy (
Operation Neptune). These units also played their parts in the war in the Pacific.
Richelieu was present in
Tokyo Bay during the signing of the
Japanese Instrument of Surrender. == Modern navy ==