Torpedo boat

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Torpedo boat attack on the Chilean central battery ship Almirante Cochrane during the 1891 Chilean Civil War. Ataquechocrane.png
Torpedo boat attack on the Chilean central battery ship Almirante Cochrane during the 1891 Chilean Civil War.

A torpedo boat is a relatively small and fast naval ship designed to carry torpedoes into battle. The first designs rammed enemy ships with explosive spar torpedoes, and later designs launched self-propelled Whitehead torpedoes. They were created to counter battleships and other slow and heavily armed ships by using speed, agility, and the power of their torpedo weapons. A number of inexpensive torpedo boats attacking en masse could overwhelm a larger ship's ability to fight them off using its large but cumbersome guns. An inexpensive fleet of torpedo boats could pose a threat to much larger and more expensive fleets of capital ships, albeit only in the coastal areas to which their small size and limited fuel load restricted them.

Naval ship water-borne vessel that is operated by a legal or insurrectionary armed service

A naval ship is a military ship used by a navy. Naval ships are differentiated from civilian ships by construction and purpose. Generally, naval ships are damage resilient and armed with weapon systems, though armament on troop transports is light or non-existent.

Torpedo self-propelled underwater weapon

A modern torpedo is a self-propelled weapon with an explosive warhead, launched above or below the water surface, propelled underwater towards a target, and designed to detonate either on contact with its target or in proximity to it.

Spar torpedo

A spar torpedo is a weapon consisting of a bomb placed at the end of a long pole, or spar, and attached to a boat. The weapon is used by running the end of the spar into the enemy ship. Spar torpedoes were often equipped with a barbed spear at the end, so it would stick to wooden hulls. A fuse could then be used to detonate it.


The introduction of fast torpedo boats in the late 19th century was a serious concern to the era's naval strategists. In response, navies operating large ships introduced smaller ships to counter torpedo boats, mounting light quick-firing guns. These ships, which came to be called "torpedo boat destroyers" and later simply "destroyers", became larger and took on more roles, making torpedo attacks as well as defending against them, and eventually defending against submarines and aircraft. The destroyer eventually became the predominant type of surface warship in the guided missile age.

A quick-firing gun is an artillery piece, typically a gun or howitzer, which has several characteristics which taken together mean the weapon can fire at a fast rate. Quick-firing was introduced worldwide in the 1880s and 1890s and had a marked impact on war both on land and at sea.

Destroyer Type of warship

In naval terminology, a destroyer is a fast, maneuverable long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against smaller powerful short-range attackers. They were originally developed in the late 19th century by Fernando Villaamil for the Spanish Navy as a defense against torpedo boats, and by the time of the Russo-Japanese War in 1904, these "torpedo boat destroyers" (TBDs) were "large, swift, and powerfully armed torpedo boats designed to destroy other torpedo boats". Although the term "destroyer" had been used interchangeably with "TBD" and "torpedo boat destroyer" by navies since 1892, the term "torpedo boat destroyer" had been generally shortened to simply "destroyer" by nearly all navies by the First World War.

In the modern era, the old concept of a very small, fast, and cheap surface combatant with powerful offensive weapons is taken up by the "fast attack craft".

Fast attack craft ship type

A fast attack craft (FAC) is a small, fast, agile and offensive warship armed with anti-ship missiles, gun or torpedoes. FACs are usually operated in close proximity to land as they lack both the seakeeping and all-round defensive capabilities to survive in blue water. The size of the vessel also limits the fuel, stores and water supplies. In size they are usually between 50–800 tonnes and can reach speeds of 25–50 knots.

Spar torpedo boats

Drawings of the Confederate torpedo boat CSS David CSS David drawing.jpg
Drawings of the Confederate torpedo boat CSS David

The American Civil War saw a number of innovations in naval warfare, including an early type of torpedo boat, armed with spar torpedoes. In 1861 President Lincoln instituted a naval blockade of Southern ports, which crippled the South's efforts to obtain war materiel from abroad. The South also lacked the means to construct a naval fleet capable of taking on the Union Navy on even terms. One strategy to counter the blockade saw the development of torpedo boats, small fast boats designed to attack the larger capital ships of the blockading fleet as a form of asymmetrical warfare.

American Civil War Civil war in the United States from 1861 to 1865

The American Civil War was a war fought in the United States from 1861 to 1865, between the North and the South. The Civil War is the most studied and written about episode in U.S. history. Primarily as a result of the long-standing controversy over the enslavement of black people, war broke out in April 1861 when secessionist forces attacked Fort Sumter in South Carolina shortly after Abraham Lincoln had been inaugurated as the President of the United States. The loyalists of the Union in the North proclaimed support for the Constitution. They faced secessionists of the Confederate States in the South, who advocated for states' rights to uphold slavery.

Abraham Lincoln 16th president of the United States

Abraham Lincoln was an American statesman and politician who served as the 16th president of the United States from 1861 until his assassination in April 1865. Lincoln led the nation through the American Civil War, its bloodiest war and its greatest moral, constitutional, and political crisis. He preserved the Union, abolished slavery, strengthened the federal government, and modernized the U.S. economy.

Union blockade

The Union blockade in the American Civil War was a naval strategy by the United States to prevent the Confederacy from trading.

The David class of torpedo boats were steam powered with a partially enclosed hull. They were not true submarines but were semi-submersible; when ballasted, only the smokestack and few inches of the hull were above the water line. CSS Midge was David-class torpedo boats. CSS Squib and CSS Scorpion represented another class of torpedo boats that were also low built but had open decks and lacked the ballasting tanks found on the Davids.

CSS <i>David</i> Confederate States Navy torpedo boat

CSSDavid was a Civil War-era torpedo boat. On October 5, 1863, she undertook a partially successful attack on the USS New Ironsides, then participating in the blockade of Charleston, South Carolina.

CSS Scorpion was a Squib-class torpedo boat procured late in 1864 by the Confederate States Navy and armed with a spar torpedo fitted to her stem. She performed picket duty in the James River under command of Lieutenant E. Lakin, CSN.

The Confederate torpedo boats were armed with spar torpedoes. This was a charge of powder in a waterproof case, mounted to the bow of the torpedo boat below the water line on a long spar. The torpedo boat attacked by ramming her intended target, which stuck the torpedo to the target ship by means of a barb on the front of the torpedo. The torpedo boat would back away to a safe distance and detonate the torpedo, usually by means of a long cord attached to a trigger.

In general, the Confederate torpedo boats were not very successful. Their low sides made them susceptible to swamping in high seas, and even to having their boiler fires extinguished by spray from their own torpedo explosions. Torpedo misfires (too early) and duds were common.

In 1864 Union Naval Lieutenant Cushing fitted a steam launch with a spar torpedo to attack the Confederate ironclad Albemarle. Also the same year the Union launched USS Spuyten Duyvil, a purpose-built craft with a number of technical innovations including variable ballast for attack operations and an extensible and reloadable torpedo placement spar.

Invention of the self-propelled torpedo

Whitehead torpedo's general profile: A. war-head B. air-flask. B'. immersion-chamber CC'. after-body C. engine-room DDDD. drain-holes E. shaft-tube F. steering-engine G. bevel-gear box H. depth-index I. tail K. charging and stop-valves L. locking-gear M. engine bed-plate P. primer-case R. rudder S. steering-rod tube T. guide-stud UU. propellers V. valve-group W. war-nose Z. strengthening-band Whitehead torpedo General Profile, The Whitehead Torpedo U.S.N.1898.jpg
Whitehead torpedo's general profile: A. war-head B. air-flask. B'. immersion-chamber CC'. after-body C. engine-room DDDD. drain-holes E. shaft-tube F. steering-engine G. bevel-gear box H. depth-index I. tail K. charging and stop-valves L. locking-gear M. engine bed-plate P. primer-case R. rudder S. steering-rod tube T. guide-stud UU. propellers V. valve-group W. war-nose Z. strengthening-band

A prototype self-propelled torpedo was created by a commission placed by Giovanni Luppis, an Austrian naval officer from Rijeka, then a port city of the Austro-Hungarian Empire, and Robert Whitehead, an English engineer who was the manager of a town factory. In 1864, Luppis presented Whitehead with the plans of the salvacoste (coastsaver), a floating weapon driven by ropes from the land that had been dismissed by the naval authorities due to the impractical steering and propulsion mechanisms.

Whitehead was unable to improve the machine substantially, since the clockwork motor, attached ropes, and surface attack mode all contributed to a slow and cumbersome weapon. However, he kept considering the problem after the contract had finished, and eventually developed a tubular device, designed to run underwater on its own, and powered by compressed air. The result was a submarine weapon, the Minenschiff (mine ship), the first modern self-propelled torpedo, officially presented to the Austrian Imperial Naval commission on December 21, 1866.

The first trials were not successful as the weapon was unable to maintain a course on a steady depth. After much work, Whitehead introduced his "secret" in 1868 which overcame this. It was a mechanism consisting of a hydrostatic valve and pendulum that caused the torpedo's hydroplanes to be adjusted so as to maintain a preset depth.

First torpedo boats

HMS Lightning, the first modern torpedo boat, built in 1876 HMS Lightning - Torpedo Boat 1877.jpg
HMS Lightning, the first modern torpedo boat, built in 1876

During the mid-19th century, the ships of the line were superseded by large steam powered ships with heavy gun armament and heavy armour, called ironclads. Ultimately this line of development led to the dreadnought class of all-big-gun battleship, starting with HMS Dreadnought.

At the same time, the weight of armour slowed down the speed of the battleships, and the huge guns needed to penetrate enemy armour fired at very slow rates. This allowed for the possibility of a small and fast ship that could attack the battleships, at a much lower cost. The introduction of the torpedo provided a weapon that could cripple, or even sink, any battleship.

The first warship of any kind to carry self-propelled torpedoes was HMS Vesuvius of 1873. The first seagoing vessel designed to fire the self-propelled Whitehead torpedo was HMS Lightning. The boat was built by John Thornycroft at Church Wharf in Chiswick for the Royal Navy. It entered service in 1876 and was armed with self-propelled Whitehead torpedoes.

Another early torpedo boat, HNoMS Rap Torpedoboat rap 1873.png
Another early torpedo boat, HNoMS Rap

As originally built, Lightning had two drop collars to launch torpedoes; these were replaced in 1879 by a single torpedo tube in the bow. She carried also two reload torpedoes amidships. She was later renamed Torpedo Boat No. 1. [1] The French Navy followed suit in 1878 with Torpilleur No 1, launched in 1878 though she had been ordered in 1875.

Another early such ship was the Norwegian warship HNoMS Rap, ordered from Thornycroft shipbuilding company, England, in either 1872 or 1873, and built at Thornycroft's shipyard at Church Wharf in Chiswick on the River Thames. Managing a speed of 14.5 knots (27 km/h), she was one of the fastest boats afloat when completed. The Norwegians initially planned to arm her with a spar torpedo, but this may never have been fitted. Rap was outfitted with launch racks for the new self-propelled Whitehead torpedoes in 1879.

Early use in combat

Chilean torpedo boats in Valparaiso, used successfully at the Battle of Caldera Bay during the 1891 Chilean Civil War. Torpederas en Valparaiso Colocolo Janequeo.jpg
Chilean torpedo boats in Valparaíso, used successfully at the Battle of Caldera Bay during the 1891 Chilean Civil War.

The first recorded launch of torpedoes from a torpedo boat (which itself was launched from a torpedo boat tender) in an actual battle was by future Russian admiral Stepan Makarov on January 16, 1878, who used self-propelled Whitehead's torpedoes against the Ottoman gunboat İntibâh during the Russo-Turkish War of 1877-78. The first sinking of an armoured ship by a torpedo boat using self-propelled torpedoes, the Chilean ironclad Blanco Encalada, occurred during the 1891 Chilean Civil War.

In the late 19th century, many navies started to build torpedo boats 30 to 50 metres (98 to 164 ft) in length, armed with up to three torpedo launchers and small guns. They were powered by steam engines and had a maximum speed of 20 to 30 knots (37 to 56 km/h). They were relatively inexpensive and could be purchased in quantity, allowing mass attacks on fleets of larger ships. The loss of even a squadron of torpedo boats to enemy fire would be more than outweighed by the sinking of a capital ship.

The Russo-Japanese War 1904–1905, was the first great war of the 20th century. [2] It was the first practical testing of the new steel battleships, cruisers, destroyers, submarines, and torpedo boats. During the war the Imperial Russian Navy in addition to their other warships, deployed 86 torpedo boats [3] and launched 27 torpedoes (from all warships) in three major campaigns, scoring 5 hits.

The Imperial Japanese Navy (IJN), like the Russians, often combined their TBs (which possessed only hull numbers) with their torpedo boat destroyers (TBDs) (often simply referring to them as destroyers) and launched over 270 torpedoes (counting the opening engagement at Port Arthur on 8 February 1904) during the war. The IJN deployed approximately 21 TBs [4] during the conflict, and on 27 May 1905 the Japanese torpedo boat destroyers and TBs launched 16 torpedoes at the battleship Knyaz Suvorov, Admiral Zinovy Rozhestvensky's flagship at the Battle of Tsushima. Admiral Tōgō Heihachirō, the IJN commander, had ordered his torpedo boats to finish off the enemy flagship, already gunned into a wreck, as he prepared to pursue the remnants of the Russian battle fleet.

Of the 16 torpedoes launched by the TBDs and TBs at the Russian battleship, only four hit their mark, two of those hits were from torpedo boats #72 and #75. [5] By evening, the battleship rolled over and sank to the bottom of the Tsushima Straits. By war's end, torpedoes launched from warships had sunk one battleship, two armored cruisers, and two destroyers. The remaining over 80 warships would be sunk by guns, mines, scuttling, or shipwreck. [6]

Torpedo boat destroyers

HMS Spider, an early model of torpedo gunboat HMS Spider.png
HMS Spider, an early model of torpedo gunboat

The introduction of the torpedo boat resulted in a flurry of activity in navies around the world, as smaller, quicker-firing guns were added to existing ships to ward off the new threat. In the mid-1880s there were developed torpedo gunboats, the first vessel design for the explicit purpose of hunting and destroying torpedo boats. Essentially very small cruisers, torpedo gunboats were equipped with torpedo tubes and an adequate gun armament, intended for hunting down smaller enemy boats.

The first example of this was HMS Rattlesnake, designed by Nathaniel Barnaby in 1885. [7] The gunboat was armed with torpedoes and designed for hunting and destroying smaller torpedo boats. She was armed with a single 4-inch/25-pounder breech-loading gun, six 3-pounder QF guns and four 14-inch (360 mm) torpedo tubes, arranged with two fixed tubes at the bow and a set of torpedo dropping carriages on either side. Four torpedo reloads were carried. [7]

A number of torpedo gunboat classes followed, including the Grasshopper class, the Sharpshooterclass, the Alarmclass and the Dryadclass – all built for the Royal Navy during the 1880s and the 1890s. However, by the end of the 1890s torpedo gunboats had been made obsolete by their more successful contemporaries, the torpedo boat destroyers, which were much faster.

HMS Havock the first modern destroyer, commissioned in 1894 HMS Havock (1893).jpg
HMS Havock the first modern destroyer, commissioned in 1894

The first ships to bear the formal designation "torpedo boat destroyer" (TBD) were the Daringclass of two ships and Havockclass of two ships of the Royal Navy, ordered in 1892 by the Third Sea Lord, Rear Admiral Jackie Fisher. [8] These were basically enlarged torpedo boats, with speed equal to or surpassing the torpedo boats, but were armed with heavier guns that could attack them before they were able to close on the main fleet. [9]

HMS Daring and HMS Decoy were both built by Thornycroft. They were armed with one 12-pounder gun and three 6-pounder guns, with one fixed 18-in torpedo tube in the bow plus two more torpedo tubes on a revolving mount abaft the two funnels. Later the bow torpedo tube was removed and two more 6-pounder guns added instead. They produced 4,200 hp (3,100 kW) from a pair of Thornycroft water-tube boilers, giving them a top speed of 27 knots, giving the range and speed to travel effectively with a battle fleet. [10]

After the Russo-Japanese War (1904–1905), these ships became known simply as destroyers. Destroyers became so much more useful, having better seaworthiness and greater capabilities than torpedo boats, that they eventually replaced most torpedo boats. However, the London Naval Treaty after World War I limited tonnage of warships, but placed no limits on ships of under 600 tons. The French, Italian, Japanese and German Navies developed torpedo boats around that displacement, 70 to 100 m long, armed with two or three guns of around 100 mm (4 in) and torpedo launchers. For example, the Royal Norwegian Navy Sleipner-class destroyers were in fact of a torpedo boat size, while the Italian Spica-class torpedo boats were closer in size to a destroyer escort. After World War II they were eventually subsumed into the revived corvette classification.

The Kriegsmarine torpedo boats were classified Torpedoboot with "T"-prefixed hull numbers. The classes designed in the mid-1930s, such as the Torpedo boat type 35, had few guns, relying almost entirely upon their torpedoes. This was found to be inadequate in combat, and the result was a "fleet torpedo boat" class (Flottentorpedoboot), which were significantly larger, up to 1,700 tons, comparable to small destroyers. This class of German boats could be highly effective, as in the action in which the British cruiser HMS Charybdis was sunk off Brittany by a torpedo salvo launched by the Elbing-class torpedo boats T23 and T27.

Motor torpedo craft

Destroyers of the Harwich Force in World War I Harwich Force destroyers.jpg
Destroyers of the Harwich Force in World War I

Before World War I steam torpedo boats which were larger and more heavily armed than hitherto were being used. The new internal combustion engine generated much more power for a given weight and size than steam engines, and allowed the development of a new class of small and fast boats. These powerful engines could make use of planing hull designs and were capable of the much higher speed of 30 to 50 knots (56 to 93 km/h) under appropriate sea conditions than displacement hulls. The boat could carry two to four torpedoes fired from simple fixed launchers and several machine guns.

During the First World War, three junior officers of the Harwich destroyer force suggested that small motor boats carrying a torpedo might be capable of travelling over the protective minefields and attacking ships of the Imperial German Navy at anchor in their bases. In 1915, the Admiralty produced a Staff Requirement requesting designs for a Coastal Motor Boat for service in the North Sea. These boats were expected to have a high speed, making use of the lightweight and powerful petrol engines then available. The speed of the boat when fully loaded was to be at least 30 knots (56 km/h) and sufficient fuel was to be carried to give a considerable radius of action.

They were to be armed in a variety of ways, with torpedoes, depth charges or for laying mines. Secondary armament would have been provided by light machine guns, such as the Lewis gun. The CMBs were designed by Thornycroft, who had experience in small fast boats. Engines were not proper maritime internal combustion engines (as these were in short supply) but adapted aircraft engines from firms such as Sunbeam and Napier. A total of 39 such vessels were built. [11]

In 1917 Thornycroft produced an enlarged 60-foot (18 m) overall version. This allowed a heavier payload, and now two torpedoes could be carried. A mixed warload of a single torpedo and four depth charges could also be carried, the depth charges released from individual cradles over the sides, rather than a stern ramp. [12] Speeds from 35–41 knots (40–47 mph; 65–76 km/h) were possible, depending on the various petrol engines fitted. At least two unexplained losses due to fires in port are thought to have been caused by a build-up of petrol vapour igniting.[ citation needed ]

Admiralty Chart of the Channel Dash, when German destroyers defended a German flotilla against Royal Navy Motor torpedo craft Operation Cerberus-fr.svg
Admiralty Chart of the Channel Dash, when German destroyers defended a German flotilla against Royal Navy Motor torpedo craft

Italian torpedo boats sank the Austrian-Hungarian SMS Wien in 1917, and SMS Szent István in 1918. During the civil war in Russia, British torpedo boats made a raid on Kronstadt harbour damaging two battleships and sinking a cruiser.

Such vessels remained useful through World War II. The Royal Navy's Motor Torpedo Boats (MTBs), Kriegsmarine 'S-Boote' (Schnellboot or "fast-boat": British termed them E-boats), (Italian) M.A.S. and M.S., Soviet Navy G-5 and U.S. PT boats (standing for Patrol Torpedo) were all of this type.

A classic fast torpedo boat action was the Channel Dash in February 1942 when German E-boats and destroyers defended the flotilla of Scharnhorst, Gneisenau, Prinz Eugen and several smaller ships against Royal Navy MTBs.

By World War II torpedo boats were seriously hampered by higher fleet speeds; although they still had a speed advantage, they could only catch the larger ships by running at very high speeds over very short distances, as demonstrated in the Channel Dash. An even greater threat was the widespread arrival of patrol aircraft, which could hunt down torpedo boats long before they could engage their targets.

During World War II United States naval forces employed fast wooden PT boats in the South Pacific in a number of roles in addition to the originally envisioned one of torpedo attack. PT boats performed reconnaissance, ferry, courier, search & rescue as well as attack and smoke screening duties. They took part in fleet actions and they worked in smaller groups and singly to harry enemy supply lines. Late in the Pacific War when large targets became scarce, many PT boats replaced two or all four of their torpedo tubes with additional guns for engaging enemy coastal supply boats and barges, isolating enemy-held islands from supply, reinforcement or evacuation.

The most significant military ship sunk by a torpedo boat during World War II was the cruiser HMS Manchester which was attacked by two Italian torpedo boats (M.S. 16 and M.S. 22) during Operation Pedestal on 13 August 1942. It seems that the torpedo that mortally struck Manchester was launched by M.S. 22 (TV Franco Mezzadra) from a distance of about 600 meters.

Fast attack craft today

Boats similar to torpedo boats are still in use, but are armed with long-range anti-ship missiles that can be used at ranges between 30 and 70 km. This reduces the need for high-speed chases and gives them much more room to operate in while approaching their targets.

Aircraft are a major threat, making the use of boats against any fleet with air cover very risky. The low height of the radar mast makes it difficult to acquire and lock onto a target while maintaining a safe distance. As a result, fast attack craft are being replaced for use in naval combat by larger corvettes, which are able to carry radar-guided anti-aircraft missiles for self-defense, and helicopters for over-the-horizon targeting.

Although torpedo boats have disappeared from the majority of the world's navies, they remained in use until the late 1990s and early 2000s in a few specialised areas, most notably in the Baltic. The close confines of the Baltic and ground clutter effectively negated the range benefits of early ASMs. Operating close to shore in conjunction with land based air cover and radars, and in the case of the Norwegian navy hidden bases cut into fjord sides, torpedo boats remained a cheap and viable deterrent to amphibious attack. Indeed, this is still the operational model followed by the Chinese Navy with its Type 025-class torpedo boat for the protection of its coastal and estuarial waters.

See also

Selected torpedo boat histories

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