Aetos-class Destroyer
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The ''Aetos'' class were four
destroyer In naval terminology, a destroyer is a fast, maneuverable, long-endurance warship intended to escort larger vessels in a fleet, convoy, or carrier battle group and defend them against a wide range of general threats. They were conceived i ...
s were originally constructed for the
Argentine Navy The Argentine Navy (ARA; ). This forms the basis for the navy's ship prefix "ARA". is the navy of Argentina. It is one of the three branches of the Armed Forces of the Argentine Republic, together with the Argentine Army, Army and the Argentine ...
as the ''San Luis'' class. In Greek they are known as the ''Thiria'' (, "Wild Beasts") class, after the ships' names. They were purchased by the
Royal Hellenic Navy The Hellenic Navy (HN; , abbreviated ΠΝ) is the naval force of Greece, part of the Hellenic Armed Forces. The modern Greek navy historically hails from the naval forces of various Aegean Islands, which fought in the Greek War of Independence. ...
in October 1912 when the Greek government expanded its navy after losing the
Greco-Turkish War of 1897 The Greco-Turkish War of 1897 or the Ottoman-Greek War of 1897 ( or ), also called the Thirty Days' War and known in Greece as the Black '97 (, ''Mauro '97'') or the Unfortunate War (), was a war fought between the Kingdom of Greece and the O ...
and in anticipation of the
Balkan Wars The Balkan Wars were two conflicts that took place in the Balkans, Balkan states in 1912 and 1913. In the First Balkan War, the four Balkan states of Kingdom of Greece (Glücksburg), Greece, Kingdom of Serbia, Serbia, Kingdom of Montenegro, M ...
. In December 1916, during
World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
, three of the destroyers were seized by France and served in the
French Navy The French Navy (, , ), informally (, ), is the Navy, maritime arm of the French Armed Forces and one of the four military service branches of History of France, France. It is among the largest and most powerful List of navies, naval forces i ...
until 1918, all except ''Panthir''. They were returned to Greece in 1918. In 1924–1925, they were extensively rebuilt and continued in service into
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, where they fought with the
Allies An alliance is a relationship among people, groups, or states that have joined together for mutual benefit or to achieve some common purpose, whether or not an explicit agreement has been worked out among them. Members of an alliance are calle ...
. ''Leon'' was sunk by German aircraft at
Suda Bay Souda Bay () is a bay and natural harbour near the town of Souda on the northwest coast of the Greek island of Crete. The bay is about 15 km long and only two to four km wide, and a deep natural harbour. It is formed between the Akrot ...
, Crete. The other three destroyers survived the war and were used as station ships during the
Greek Civil War The Greek Civil War () took place from 1946 to 1949. The conflict, which erupted shortly after the end of World War II, consisted of a Communism, Communist-led uprising against the established government of the Kingdom of Greece. The rebels decl ...
. They were discarded in 1946.


Design

The ''Aetos'' class were long overall and at the waterline with a beam of as built. The destroyers had a draught of , a
standard displacement The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into wei ...
of and a fully loaded displacement of . The ''Aetos'' class was powered by two Parsons
geared turbine A steam turbine or steam turbine engine is a machine or heat engine that extracts thermal energy from pressurized steam and uses it to do mechanical work utilising a rotating output shaft. Its modern manifestation was invented by Sir Charles Par ...
s turning two
shafts ''Shafts'' was an English feminist magazine produced by Margaret Sibthorp from 1892 until 1899. Initially published weekly and priced at one penny, its themes included votes for women, women's education, and radical attitudes towards vivisection ...
and fed steam by five coal-fired
White-Forster boiler Three-drum boilers are a class of water-tube boiler used to generate steam, typically to power ships. They are compact and of high evaporative power, factors that encourage this use. Other boiler designs may be more efficient, although bulkier, an ...
s. The engines were rated at and had a designed speed of . They carried of coal. The destroyers were initially armed with four single-mounted guns and four single-mounted
torpedo tube A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboa ...
s. They had an initial
complement Complement may refer to: The arts * Complement (music), an interval that, when added to another, spans an octave ** Aggregate complementation, the separation of pitch-class collections into complementary sets * Complementary color, in the visu ...
of 90.


Modifications

Significant changes were made between 1924 and 1935, when the ships were reconstructed by
J. Samuel White J. Samuel White was a British shipbuilding firm based in Cowes, taking its name from John Samuel White (1838–1915). It came to prominence during the Victorian era. During the 20th century it built destroyers and other naval craft for both the ...
. Four Yarrow oil-fired boilers replaced the coal-fired ones, allowing the number of
funnels A funnel is a tube or pipe that is wide at the top and narrow at the bottom, used for guiding liquid or powder into a small opening. Funnels are usually made of stainless steel, aluminium, glass, or plastic. The material used in its constructi ...
to be reduced from five to two. One 4-inch gun was moved to a new shelter deck forward of the
bridge A bridge is a structure built to Span (engineering), span a physical obstacle (such as a body of water, valley, road, or railway) without blocking the path underneath. It is constructed for the purpose of providing passage over the obstacle, whi ...
, allowing four single torpedo tube mountings to be replaced by two triple mountings which were turnable; two 2-pounder
anti-aircraft Anti-aircraft warfare (AAW) is the counter to aerial warfare and includes "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It encompasses surface-based, subsurface ( submarine-launched), and air-ba ...
(AA) guns were also added. Two ships were further modified in to carry 40
naval mine A naval mine is a self-contained explosive weapon placed in water to damage or destroy surface ships or submarines. Similar to anti-personnel mine, anti-personnel and other land mines, and unlike purpose launched naval depth charges, they are ...
s.The sources are in disagreement over the AA armament. Gardiner & Gray claim it was two 40 mm Bofors mounts that were installed in 1925, while Chesneau states it was two 2-pounder guns. Chesneau and Whitley states that it was ''Aetos'' and ''Panthir'' which were modified for minelaying capabilities, while Gardiner & Gray state it was ''Ierax'' and ''Panthir''. The displacement of the destroyers increased to standard and fully loaded, while their maximum speed increased to . The three surviving members of the class, ''Ierax'', ''Panthir'' and ''Aetos'' underwent further modifications. The aft bank of torpedo tubes was replaced by a high-angle gun. Their 4-inch guns were reduced to three, with the 'X' and 'Y' mounts landed for increased
depth charge A depth charge is an anti-submarine warfare (ASW) weapon designed to destroy submarine A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited ...
storage. The aft-most gun was replaced by four depth charge throwers. Furthermore, three cannon were added for AA defence and Type 123A
asdic Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances ( ranging), communicate with or detect objects o ...
was installed. Two single AA guns replaced the 2-pounder guns.


Ships in class


History

The four ships in this class had originally been ordered by
Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...
in 1909 from the English shipyard
Cammell Laird Cammell Laird is a British shipbuilding company. It was formed from the merger of Laird Brothers of Birkenhead and Johnson Cammell & Co of Sheffield at the turn of the twentieth century. The company also built railway rolling stock until 1929, ...
in
Birkenhead Birkenhead () is a town in the Metropolitan Borough of Wirral, Merseyside, England. The town is on the Wirral Peninsula, along the west bank of the River Mersey, opposite Liverpool. It lies within the Historic counties of England, historic co ...
as the ''San Luis'' class. The four ships were launched in 1911 as ''San Luis'', ''Santa Fe'', ''Santiago del Estero'' and ''Tucumán''. They were purchased by Greece for 148,000 pounds each in October 1912, as the outbreak of the
First Balkan War The First Balkan War lasted from October 1912 to May 1913 and involved actions of the Balkan League (the Kingdoms of Kingdom of Bulgaria, Bulgaria, Kingdom of Serbia, Serbia, Kingdom of Greece, Greece and Kingdom of Montenegro, Montenegro) agai ...
was imminent, and renamed ''Aetos'', ''Ierax'', ''Panthir'' and ''Leon'' respectively. The ships hoisted the Greek flag and sailed independently from Britain, still manned with Argentine crews, for
Algiers Algiers is the capital city of Algeria as well as the capital of the Algiers Province; it extends over many Communes of Algeria, communes without having its own separate governing body. With 2,988,145 residents in 2008Census 14 April 2008: Offi ...
. ''Aetos'' suffered a breakdown during the voyage and had to be towed to Algiers. There the ships were taken over by Greek crews, carried on the steamer ''Ionia''. Although the ships were completely unknown to the Greeks before then, and all manuals and labels on the ship were in Spanish, within 24 hours all had been made ready to sail and began their voyage to Greece. Within a few days of arriving at the
Salamis Naval Base The Salamis Naval Base () is the largest naval base of the Hellenic Navy. It is located in the northeastern part of Salamis Island (Cape Arapis), Greece and in Amphiali and Skaramangas. It is close to the major population centre of Athens. Most H ...
, they were sent to join the main Greek battlefleet at
Lemnos Lemnos ( ) or Limnos ( ) is a Greek island in the northern Aegean Sea. Administratively the island forms a separate municipality within the Lemnos (regional unit), Lemnos regional unit, which is part of the North Aegean modern regions of Greece ...
, apart from ''Aetos'', which underwent five weeks of repairs. Due to the haste with which the purchase had been made, only limited ammunition for operations was purchased: some 3,000 shells for the ships' guns, and no torpedoes. As a result, during the First Balkan War, the ships served and were designated as "scout ships" (ανιχνευτικά) rather than destroyers (αντιτορπιλικά). In December 1916, the
French Navy The French Navy (, , ), informally (, ), is the Navy, maritime arm of the French Armed Forces and one of the four military service branches of History of France, France. It is among the largest and most powerful List of navies, naval forces i ...
landed troops near
Athens Athens ( ) is the Capital city, capital and List of cities and towns in Greece, largest city of Greece. A significant coastal urban area in the Mediterranean, Athens is also the capital of the Attica (region), Attica region and is the southe ...
to put pressure on the royal government of King
Constantine I of Greece Constantine I (, Romanization, romanized: ''Konstantínos I''; – 11 January 1923) was King of Greece from 18 March 1913 to 11 June 1917 and again from 19 December 1920 to 27 September 1922. He was commander-in-chief of the Hellenic Army dur ...
during the Greek "
National Schism The National Schism (), also sometimes called The Great Division, was a series of disagreements between Constantine I of Greece, King Constantine I and Prime Minister Eleftherios Venizelos over Kingdom of Greece, Greece's foreign policy from 19 ...
". After French troops were ambushed by Greeks, French naval ships fired upon the city. In retaliation for the series of events, France seized several Greek vessels, including three destroyers of the ''Aetos'' class. ''Aetos'', ''Ierax'' and ''Leon'' were seized by France in December 1916 and placed in service with the French Navy. In French service, the ships had a complement of 102. They served with the French Navy in 1917–1918, primarily in an
anti-submarine An anti-submarine weapon (ASW) is any one of a number of devices that are intended to act against a submarine and its crew, to destroy (sink) the vessel or reduce its capability as a weapon of war. In its simplest sense, an anti-submarine weapon ...
capacity. Following some objections by senior French naval officers, the ''Aetos'' class were officially returned to the Greek Navy in 1917. However, due to a shortage of trained Greek personnel and that they were refitting in French naval yards, there was a delay in the actual handover. In 1918, the four destroyers, alongside the
cruiser A cruiser is a type of warship. Modern cruisers are generally the largest ships in a fleet after aircraft carriers and amphibious assault ships, and can usually perform several operational roles from search-and-destroy to ocean escort to sea ...
, joined the British
Royal Navy The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom ...
's Aegean Squadron at
Mudros Moudros () is a town and a former municipality on the island of Lemnos, North Aegean, Greece. Since the 2011 local government reform it is part of the municipality Lemnos, of which it is a municipal unit. It covers the entire eastern peninsula o ...
. Following the end of World War I, the four destroyers were extensively refitted in 1924–1925, undergoing further modifications in 1931. In World War II, after the
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invasion of Greece, the four ships served with the
Allies An alliance is a relationship among people, groups, or states that have joined together for mutual benefit or to achieve some common purpose, whether or not an explicit agreement has been worked out among them. Members of an alliance are calle ...
. ''Leon'' was damaged by German aircraft on 22 May 1941 and sunk at
Suda Bay Souda Bay () is a bay and natural harbour near the town of Souda on the northwest coast of the Greek island of Crete. The bay is about 15 km long and only two to four km wide, and a deep natural harbour. It is formed between the Akrot ...
, Crete on 15 May 1941. The remaining three were refitted in
Madras Chennai, also known as Madras ( its official name until 1996), is the capital and largest city of Tamil Nadu, the southernmost state of India. It is located on the Coromandel Coast of the Bay of Bengal. According to the 2011 Indian ce ...
,
Calcutta Kolkata, also known as Calcutta (List of renamed places in India#West Bengal, its official name until 2001), is the capital and largest city of the Indian States and union territories of India, state of West Bengal. It lies on the eastern ba ...
and
Port Sudan Port Sudan (, Beja: ) is a port city on the Red Sea in eastern Sudan, and the capital of Red Sea State. Port Sudan is Sudan's main seaport and the source of 90% of the country's international trade. The population of Port Sudan was estimated in ...
during 1941 and 1942. ''Ierax'', ''Panthir'' and ''Aetos'' remained in service until 1945, serving under British Royal Navy control. In 1944–1945 they were made station ships. The three destroyers were discarded in 1946 following the war. In November 1928, the Greek government announced plans to acquire four new ocean-going destroyers based on the design of the Aetos-class. This initiative formed part of a broader naval programme.


Notes


Citations


Sources

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External links


Naval History
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(accessed 2017-02-04) {{DISPLAYTITLE:''Aetos''-class destroyer Destroyer classes