A seaplane tender is a boat or ship that supports the operation of seaplanes. Some of these vessels, known as seaplane carriers, could not only carry seaplanes but also provided all the facilities needed for their operation; these ships are regarded by some as the first aircraft carriers and appeared just before the First World War.
In maritime parlance a tender is a vessel that is used to support the operation of other vessels.
In British usage, the term tender was used for small craft, with the term depot ship being used for large seagoing vessels. Flying boats and float planes even when based at home in ports and harbour had a need for small support vessels to operate. [1]
British tenders were small craft of launch to pinnace size. These were used to ferry crews, stores and supplies between shore and the aircraft, to maintain the buoys used to mark out "taxiways" and "runways" and to keep these clear of debris to prevent foreign object damage, and in the case of emergency to act as rescue craft and airport crash tenders. [1] All those functions that on land would require wheeled ground support equipment had a need for a watercraft equivalent.
When deploying flying boat squadrons, bases could rapidly be established in areas lacking infrastructure by sending flying boat depot ships in addition to small craft tenders. These ships could carry out the function of barracks, workshops and control towers, i.e. those functions which in a land based airfield would be fulfilled by buildings. [1]
The first seaplane carrier appeared in 1911 with the French Navy La Foudre , following the invention of the seaplane in 1910 with the French Fabre Hydravion. La Foudre carried float-equipped planes under hangars on the main deck, from where they were lowered on the sea with a crane. La Foudre was further modified in November 1913 with a 10 m (32 ft 10 in)-long flat deck to launch her seaplanes. [2] Another early seaplane carrier was HMS Hermes, an old cruiser converted and commissioned with a flying-off deck in mid-1913. However, HMS Ark Royal was the first ship in history designed and built as a seaplane carrier in 1914.
In the Battle of Tsingtao, from 5 September 1914, the Imperial Japanese Navy seaplane carrier Wakamiya conducted the world's first naval-launched air raids [3] from Kiaochow Bay. [4] The four Maurice Farman seaplanes bombarded German-held land targets (communication centers and command centers) and damaged a German minelayer in the Tsingtao peninsula from September 1914 until that November, when the Germans surrendered. [3]
On Christmas Day 1914, the British carried out the Cuxhaven Raid; seaplanes carried within range of their targets attacked German naval targets in the Heligoland Bight.
These carriers had hangars for storing and maintaining the aircraft, but no flight deck as in a true aircraft carrier. Instead, they used cranes to lower the aircraft into the sea for takeoff and to recover them after landing. The ships were normally converted merchant vessels rather than specially constructed for the task. As aircraft improved, the problems of using seaplanes became more of a handicap. The aircraft could only be operated in a smooth sea and the ship had to stop for launching or recovery, both of which took around 20 minutes. The tender was often stationed 10 mi (8.7 nmi ; 16 km ) or so in front of the main battle fleet with the cruiser screen so that it would not fall significantly behind when it launched its aircraft. Seaplanes also had poorer performance than other aircraft because of the drag and weight of the floats. Seaplane tenders had largely been superseded by aircraft carriers in the battle fleet by the end of the First World War, although aircraft were still of minor importance compared to the firepower of naval artillery.
The British HMS Ark Royal was a seaplane tender with a flying-off deck. Seaplanes could be recovered while the ship was under way through the "Hein Mat" –a sheet towed behind the vessel, once the aircraft was on the mat it was effectively stationary with respect to the ship and could be hoisted aboard.
In the inter-war years, it was common for cruisers and battleships to be equipped with catapult-launched reconnaissance seaplanes. A few navies –especially those without true aircraft carriers –also acquired catapult-equipped seaplane carriers for fleet reconnaissance.
During the Second World War, both the American and the Japanese Navies built a number of seaplane tenders to supplement their aircraft carrier fleets. However, these ships often had their catapults removed, and were used as support vessels that operated seaplanes from harbours rather than in a seaway. These aircraft were generally for long-range reconnaissance patrols. The tenders allowed the aircraft to be rapidly deployed to new bases because their runways did not have to be constructed, and support facilities were mobile much like supply ships for submarines or destroyers.
Nazi Germany's Kriegsmarine , in the Second World War, did not operate any seaplane tenders. However, the Luftwaffe had nineteen seaplane tenders. These ships were mostly converted from existing civilian seaplane tenders, and were capable of carrying 1–3 seaplanes. The French and Italian Navies also had seaplane tenders.
Seaplane carriers became obsolete at the end of the Second World War. A few remained in service after the war but by the late 1950s most had been scrapped or converted to other uses such as helicopter repair ships.
Examples of seaplane tenders include:
An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and facilities for carrying, arming, deploying, and recovering aircraft. Typically it is the capital ship of a fleet, as it allows a naval force to project air power worldwide without depending on local bases for staging aircraft operations. Carriers have evolved since their inception in the early twentieth century from wooden vessels used to deploy balloons to nuclear-powered warships that carry numerous fighters, strike aircraft, helicopters, and other types of aircraft. While heavier aircraft such as fixed-wing gunships and bombers have been launched from aircraft carriers, these aircraft have not landed on a carrier. By its diplomatic and tactical power, its mobility, its autonomy and the variety of its means, the aircraft carrier is often the centerpiece of modern combat fleets. Tactically or even strategically, it replaced the battleship in the role of flagship of a fleet. One of its great advantages is that, by sailing in international waters, it does not interfere with any territorial sovereignty and thus obviates the need for overflight authorizations from third-party countries, reduces the times and transit distances of aircraft and therefore significantly increases the time of availability on the combat zone.
A warship or combatant ship is a ship that is used for naval warfare. Usually they belong to the navy branch of the armed forces of a nation, though they have also been operated by individuals, cooperatives and corporations. As well as being armed, warships are designed to withstand damage and are typically faster and more maneuverable than merchant ships. Unlike a merchant ship, which carries cargo, a warship typically carries only weapons, ammunition and supplies for its crew.
The Royal Naval Air Service (RNAS) was the air arm of the Royal Navy, under the direction of the Admiralty's Air Department, and existed formally from 1 July 1914 to 1 April 1918, when it was merged with the British Army's Royal Flying Corps to form the Royal Air Force (RAF), the world's first independent air force.
The flight deck of an aircraft carrier is the surface from which its aircraft take off and land, essentially a miniature airfield at sea. On smaller naval ships which do not have aviation as a primary mission, the landing area for helicopters and other VTOL aircraft is also referred to as the flight deck. The official U.S. Navy term for these vessels is "air-capable ships".
Naval aviation / Aeronaval is the application of military air power by navies, whether from warships that embark aircraft, or land bases. It often involves navalised aircraft, specifically designed for naval use. Seaborne aviation encompasses similar activities not restricted to navies, including marines and coast guards, such as in U.S. naval aviators.
An aircraft catapult is a device used to allow aircraft to take off in a limited distance, typically from the deck of a vessel. They can also be installed on land-based runways, although this is rarely done. They are usually used on aircraft carriers as a form of assisted take off.
A submarine aircraft carrier is a submarine equipped with aircraft for observation or attack missions. These submarines saw their most extensive use during World War II, although their operational significance remained rather small. The most famous of them were the Japanese I-400-class submarines and the French submarine Surcouf, although small numbers of similar craft were built for other nations' navies as well.
The Foudre was a French seaplane carrier, the first in history. Her development followed the invention of the seaplane in 1910 with the French Le Canard.
HMS Campania was a seaplane tender and aircraft carrier, converted from an elderly ocean liner by the Royal Navy early in the First World War. After her conversion was completed in mid-1915 the ship spent her time conducting trials and exercises with the Grand Fleet. These revealed the need for a longer flight deck to allow larger aircraft to take off, and she was modified accordingly. Campania missed the Battle of Jutland in May 1916, but made a number of patrols with elements of the Grand Fleet. She never saw combat and was soon relegated to a training role because of her elderly machinery. In November 1918 Campania was anchored with the capital ships of the Grand Fleet when a sudden storm caused her anchor to drag. With no second anchor being laid, she hit several of the ships and the collisions punctured her hull; she slowly sank, with no loss of life.
A scout is a type of United States Navy aircraft whose name derives from the scout cruisers used by the US Navy for similar roles, including screening (escorting) the fleet against enemy forces and was often combined with other roles, such as artillery spotting, reconnaissance and bombing to which the role is often conflated.
Wakamiya was a seaplane carrier of the Imperial Japanese Navy and the first Japanese aircraft carrier. She was converted from a transport ship into a seaplane carrier and commissioned in August 1914. She was equipped with four Japanese-built French Maurice Farman seaplanes. In September 1914, she conducted the world's first naval-launched air raids.
Chiyoda was a light aircraft carrier of the Imperial Japanese Navy during World War II. Originally constructed as the second vessel of the Chitose-class seaplane tenders in 1934, she continued to operate in that capacity during the Second Sino-Japanese War and the early stages of the Pacific War until her conversion into a light aircraft carrier after the Battle of Midway. She was sunk during the Battle of Leyte Gulf by a combination of naval bombers, cruiser shellfire and destroyer-launched torpedoes.
The torpedo boat tender was a type of warship developed at the end of the 19th century to help bring small torpedo boats to the high seas, and launch them for attack.
Aircraft carriers are warships that evolved from balloon-carrying wooden vessels into nuclear-powered vessels carrying many dozens of fixed- and rotary-wing aircraft. Since their introduction they have allowed naval forces to project air power great distances without having to depend on local bases for staging aircraft operations.
A carrier-based aircraft is a naval aircraft designed for operations from aircraft carriers. Carrier-based aircraft must be able to launch in a short distance and be sturdy enough to withstand the abrupt forces of launching from and recovering on a pitching deck. In addition, their wings are generally able to fold up, easing operations in tight quarters.
Dédalo was a steamship that was built in England in 1901 as the cargo ship Neuenfels for the German shipping company DDG "Hansa". Spain seized her in 1918 and had her converted into a seaplane tender and balloon carrier, entering Spanish Navy service in 1922. She served in the Rif War, in which her aircraft took part in the Alhucemas landing of French and Spanish forces in 1925. She was decommissioned in 1934 and scrapped in 1940.
Aircraft repair ship is a naval auxiliary ship designed to provide maintenance support to aircraft. Aircraft repair ships provide similar services to seaplane tenders, that also cared for the crew. Aircraft repair ships had their own stores of spare parts, like a depot ship. Aircraft repair ships had repair personnel and equipment to repair failures or battle damage on aircraft. Aircraft repair ships also did regular aircraft maintenance.
