A convoy is a group of
vehicle
A vehicle (from la, vehiculum) is a machine that transports people or cargo. Vehicles include wagons, bicycles, motor vehicles (motorcycles, cars, trucks, buses, mobility scooters for disabled people), railed vehicles (trains, trams), wa ...
s, typically motor vehicles or ships, traveling together for mutual support and protection. Often, a convoy is organized with armed defensive support and can help maintain cohesion within a unit. It may also be used in a non-military sense, for example when driving through remote areas.
Naval convoys
Age of Sail
Naval convoys have been in use for centuries, with examples of merchant ships traveling under naval protection dating to the 12th century.
The use of organized naval convoys dates from when ships began to be separated into specialist classes and national navies were established.
By the
French Revolutionary Wars
The French Revolutionary Wars (french: Guerres de la Révolution française) were a series of sweeping military conflicts lasting from 1792 until 1802 and resulting from the French Revolution. They pitted French First Republic, France against Ki ...
of the late 18th century, effective
naval
A navy, naval force, or maritime force is the branch of a nation's armed forces principally designated for naval warfare, naval and amphibious warfare; namely, lake-borne, riverine, littoral zone, littoral, or ocean-borne combat operations and ...
convoy
tactics
Tactic(s) or Tactical may refer to:
* Tactic (method), a conceptual action implemented as one or more specific tasks
** Military tactics, the disposition and maneuver of units on a particular sea or battlefield
** Chess tactics
** Political tact ...
had been developed to ward off
pirate
Piracy is an act of robbery or criminal violence by ship or boat-borne attackers upon another ship or a coastal area, typically with the goal of stealing cargo and other valuable goods. Those who conduct acts of piracy are called pirates, v ...
s and
privateer
A privateer is a private person or ship that engages in maritime warfare under a commission of war. Since robbery under arms was a common aspect of seaborne trade, until the early 19th century all merchant ships carried arms. A sovereign or deleg ...
s. Some convoys contained several hundred merchant ships. The most enduring system of convoys were the
Spanish treasure fleet
The Spanish treasure fleet, or West Indies Fleet ( es, Flota de Indias, also called silver fleet or plate fleet; from the es, label=Spanish, plata meaning "silver"), was a convoy system of sea routes organized by the Spanish Empire from 1566 to ...
s, that sailed from the 1520s until 1790.
When merchant ships sailed independently, a privateer could cruise a shipping lane and capture ships as they passed. Ships sailing in convoy presented a much smaller target: a convoy was as hard to find as a single ship. Even if the privateer found a convoy and the wind was favourable for an attack, it could still hope to capture only a handful of ships before the rest managed to escape, and a small escort of warships could easily thwart it. As a result of the convoy system's effectiveness, wartime insurance premiums were consistently lower for ships that sailed in convoys.
Many
naval battles
Naval warfare is combat in and on the sea, the ocean, or any other battlespace involving a major body of water such as a large lake or wide river. Mankind has fought battles on the sea for more than 3,000 years. Even in the interior of large la ...
in the
Age of Sail
The Age of Sail is a period that lasted at the latest from the mid-16th (or mid- 15th) to the mid- 19th centuries, in which the dominance of sailing ships in global trade and warfare culminated, particularly marked by the introduction of naval ...
were fought around convoys, including:
*The
Battle of Portland
The naval Battle of Portland, or Three Days' Battle took place during 18–20 February 1653 (28 February – 2 March 1653 (Gregorian calendar)), during the First Anglo-Dutch War, when the fleet of the Commonwealth of England under General at ...
(1653)
*The
Battle of Ushant (1781)
The Second Battle of Ushant was a naval battle fought between French and British squadrons near Ushant, an island off the coast of Brittany, on 12 December 1781, as part of the American Revolutionary War.
Background
On 10 December 1781 a French ...
*The
Battle of Dogger Bank (1781)
The Battle of Dogger Bank was a naval battle that took place on 5 August 1781 during the Fourth Anglo-Dutch War, contemporaneously related to the American Revolutionary War, in the North Sea. It was a bloody encounter between a British sq ...
*
The Glorious First of June
The Glorious First of June (1 June 1794), also known as the Fourth Battle of Ushant, (known in France as the or ) was the first and largest fleet action of the naval conflict between the Kingdom of Great Britain and the First French Republic ...
(1794)
*The
Battle of Pulo Aura
The Battle of Pulo Aura was a minor naval engagement of the Napoleonic Wars, fought on 14 February 1804, in which a large convoy of Honourable East India Company (HEIC) East Indiamen, well-armed merchant ships, intimidated, drove off and chased ...
(1804)
By the end of the
Napoleonic Wars
The Napoleonic Wars (1803–1815) were a series of major global conflicts pitting the French Empire and its allies, led by Napoleon I, against a fluctuating array of European states formed into various coalitions. It produced a period of Fren ...
the
Royal Navy
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against F ...
had in place a sophisticated convoy system to protect merchant ships.
Losses of ships travelling out of convoy however were so high that no merchant ship was allowed to sail unescorted.
World War I
In the early 20th century, the
dreadnought
The dreadnought (alternatively spelled dreadnaught) was the predominant type of battleship in the early 20th century. The first of the kind, the Royal Navy's , had such an impact when launched in 1906 that similar battleships built after her ...
changed the balance of power in convoy battles. Steaming faster than merchant ships and firing at long ranges, a single
battleship
A battleship is a large armored warship with a main battery consisting of large caliber guns. It dominated naval warfare in the late 19th and early 20th centuries.
The term ''battleship'' came into use in the late 1880s to describe a type of ...
could destroy many ships in a convoy before the others could scatter over the horizon. To protect a convoy against a capital ship required providing it with an escort of another capital ship, at very high
opportunity cost
In microeconomic theory, the opportunity cost of a particular activity is the value or benefit given up by engaging in that activity, relative to engaging in an alternative activity. More effective it means if you chose one activity (for example ...
(i.e. potentially tying down multiple capital ships to defend different convoys against one opponent ship).
Battleships were the main reason that the
British Admiralty
The Admiralty was a department of the Government of the United Kingdom responsible for the command of the Royal Navy until 1964, historically under its titular head, the Lord High Admiral – one of the Great Officers of State. For much of it ...
did not adopt convoy tactics at the start of the
first Battle of the Atlantic
The Atlantic U-boat campaign of World War I (sometimes called the "First Battle of the Atlantic", in reference to the World War II campaign of that name) was the prolonged naval conflict between German submarines and the Allied navies in Atla ...
in
World War I
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
. But the German capital ships had been bottled up in the North Sea, and the main threat to shipping came from
U-boat
U-boats were naval submarines operated by Germany, particularly in the First and Second World Wars. Although at times they were efficient fleet weapons against enemy naval warships, they were most effectively used in an economic warfare role ...
s. From a tactical point of view, World War I–era
submarine
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely op ...
s were similar to privateers in the age of sail. These submarines were only a little faster than the merchant ships they were attacking, and capable of sinking only a small number of vessels in a convoy because of their limited supply of torpedoes and shells. The Admiralty took a long time to respond to this change in the tactical position, and in April 1917 convoys were trialled, before being officially introduced in the Atlantic in September 1917.
Other arguments against convoys were raised. The primary issue was the loss of productivity, as merchant shipping in convoy has to travel at the speed of the slowest vessel in the convoy and spent a considerable amount of time in ports waiting for the next convoy to depart. Further, large convoys were thought to overload port resources.
Actual analysis of shipping losses in World War I disproved all these arguments, at least so far as they applied to transatlantic and other long-distance traffic. Ships sailing in convoys were far less likely to be sunk, even when not provided with an escort. The loss of productivity due to convoy delays was small compared with the loss of productivity due to ships being sunk. Ports could deal more easily with convoys because they tended to arrive on schedule and so loading and unloading could be planned.
In his book ''
On the Psychology of Military Incompetence
''On The Psychology of Military Incompetence'' is a work by Norman F. Dixon, first published in 1976, which applies insights from psychology to military history. After case studies of military and naval disasters from the preceding 120 years, mos ...
'', Norman Dixon suggested that the hostility towards convoys in the naval establishment were in part caused by a (sub-conscious) perception of convoys as effeminating, due to warships having to care for civilian merchant ships. Convoy duty also exposes the escorting warships to the sometimes hazardous conditions of the North Atlantic, with only rare occurrences of visible achievement (i.e. fending off a submarine assault).
World War II
Atlantic
The British adopted a convoy system, initially voluntary and later compulsory for almost all merchant ships, the moment that
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
was declared. Each convoy consisted of between 30 and 70 mostly unarmed merchant ships. Canadian, and later American, supplies were vital for Britain to continue its war effort. The course of the
Battle of the Atlantic
The Battle of the Atlantic, the longest continuous military campaign in World War II, ran from 1939 to the defeat of Nazi Germany in 1945, covering a major part of the naval history of World War II. At its core was the Allied naval blockade ...
was a long struggle as the Germans developed anti-convoy tactics and the British developed counter-tactics to thwart the Germans.
The capability of a heavily armed warship against a convoy was dramatically illustrated by the fate of
Convoy HX 84
Convoy HX 84 was the 84th of the numbered series of Allied North Atlantic HX convoys of merchant ships from Halifax, Nova Scotia, to Liverpool, England, during the Battle of the Atlantic. Thirty-eight ships escorted by the armed merchant cruise ...
. On November 5, 1940, the German heavy cruiser encountered the convoy. ''Maiden'', ''Trewellard'', and ''Kenbame Head'' were quickly destroyed, and ''Beaverford'' and ''Fresno City'' falling afterwards. Only the sacrifices of the
armed merchant cruiser
An armed merchantman is a merchant ship equipped with guns, usually for defensive purposes, either by design or after the fact. In the days of sail, piracy and privateers, many merchantmen would be routinely armed, especially those engaging in lo ...
and the freighter ''Beaverford'' to stall the ''Scheer'', in addition to failing light, allowed the rest of the convoy to escape.
The deterrence value of a battleship in protecting a convoy was also dramatically illustrated when the German light battleships (referred by some as battlecruisers) and , mounting guns, came upon an eastbound British convoy (
HX 106, with 41 ships) in the North Atlantic on February 8, 1941. When the Germans detected the slow but well-protected battleship escorting the convoy, they fled the scene rather than risk damage from her guns.
The enormous number of vessels involved and the frequency of engagements meant that statistical techniques could be applied to evaluate tactics: an early use of
operational research
Operations research ( en-GB, operational research) (U.S. Air Force Specialty Code: Operations Analysis), often shortened to the initialism OR, is a discipline that deals with the development and application of analytical methods to improve decis ...
in war.
Prior to overt participation in World War II, the US was actively engaged in convoys with the British in the North Atlantic Ocean, primarily supporting British activities in Iceland.
After Germany declared war on the US, the US Navy decided not to organize convoys on the American eastern seaboard. US Fleet Admiral
Ernest King
Ernest Joseph King (23 November 1878 – 25 June 1956) was an American naval officer who served as Commander in Chief, United States Fleet (COMINCH) and Chief of Naval Operations (CNO) during World War II. As COMINCH-CNO, he directed the Un ...
ignored advice on this subject from the British, as he had formed a poor opinion of the Royal Navy early in his career. The result was what the U-boat crews called their
Second Happy Time
The "Second Happy Time" (; officially Operation Paukenschlag ("Operation Drumbeat"), and also known among German submarine commanders as the "American Shooting Season") was a phase in the Battle of the Atlantic during which Axis submarines att ...
, which did not end until convoys were introduced.
Pacific
In the Pacific Theater of World War II,
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
ese merchant ships rarely traveled in convoys. Japanese destroyers were generally deficient in antisubmarine weaponry compared to their Allied counterparts, and the Japanese navy did not develop an inexpensive convoy escort like the Allies'
destroyer escort
Destroyer escort (DE) was the United States Navy mid-20th-century classification for a warship designed with the endurance necessary to escort mid-ocean convoys of merchant marine ships.
Development of the destroyer escort was promoted by th ...
/
frigate
A frigate () is a type of warship. In different eras, the roles and capabilities of ships classified as frigates have varied somewhat.
The name frigate in the 17th to early 18th centuries was given to any full-rigged ship built for speed and ...
until it was too late. In the early part of the conflict, American submarines in the Pacific were ineffective as they suffered from timid tactics, faulty torpedoes, and poor deployment, while there were only small numbers of British and Dutch boats. U.S. Admiral
Charles A. Lockwood
Charles Andrews Lockwood (May 6, 1890 – June 6, 1967) was a vice-admiral and flag officer of the United States Navy. He is known in submarine history as the commander of ComSubPac, Submarine Force Pacific Fleet during World War II. He devised ...
's efforts, coupled with strenuous complaints from his captains, rectified these problems and U.S. submarines became much more successful by war's end. As a result, the Japanese merchant fleet was
largely destroyed by the end of the war. Japanese submarines, unlike their U.S. and German equivalents, focused on U.S. battle fleets rather than merchant convoys, and while they did manage some early successes, sinking two U.S. carriers, they failed to significantly inhibit the invasion convoys carrying troops and equipment in support of the U.S. island-hopping campaign.
Several notable battles in the South Pacific involved Allied bombers interdicting Japanese troopship convoys which were often defended by Japanese fighters, notable
Guadalcanal
Guadalcanal (; indigenous name: ''Isatabu'') is the principal island in Guadalcanal Province of Solomon Islands, located in the south-western Pacific, northeast of Australia. It is the largest island in the Solomon Islands by area, and the seco ...
(13 November 1942),
Rabaul
Rabaul () is a township in the East New Britain province of Papua New Guinea, on the island of New Britain. It lies about 600 kilometres to the east of the island of New Guinea. Rabaul was the provincial capital and most important settlement in ...
(5 January 1943), and the
Battle of the Bismarck Sea
The Battle of the Bismarck Sea (2–4 March 1943) took place in the South West Pacific Area (SWPA) during World War II when aircraft of the U.S. Fifth Air Force and the Royal Australian Air Force (RAAF) attacked a Japanese convoy carrying troops ...
(2–4 March 1943).
At the
Battle off Samar
The Battle off Samar was the centermost action of the Battle of Leyte Gulf, one of the largest naval battles in history, which took place in the Philippine Sea off Samar Island, in the Philippines on October 25, 1944. It was the only major ...
, the effectiveness of the U.S. Navy's escorts was demonstrated when they managed to defend their troop convoy from a much larger and more powerful Japanese battle-fleet. The Japanese force comprised four battleships and numerous heavy cruisers, while the U.S. force consisted of escort carriers, destroyers, and destroyer escorts. Large numbers of American aircraft (albeit without much anti-ship ordnance other than torpedoes) and aggressive tactics of the destroyers (with their radar-directed gunfire) allowed the U.S. to sink three Japanese heavy cruisers at the cost of one escort carrier and three destroyers.
Tactics
The German anti-convoy
tactics
Tactic(s) or Tactical may refer to:
* Tactic (method), a conceptual action implemented as one or more specific tasks
** Military tactics, the disposition and maneuver of units on a particular sea or battlefield
** Chess tactics
** Political tact ...
included:
* long-range surveillance aircraft to find convoys;
* strings of U-boats (
wolfpacks) that could be directed onto a convoy by radio;
* breaking the British naval codes;
* improved anti-ship weapons, including magnetic detonators and sonic homing torpedoes.
The Allied responses included:
*
air raids on the U-boat bases at
Brest
Brest may refer to:
Places
*Brest, Belarus
**Brest Region
**Brest Airport
**Brest Fortress
*Brest, Kyustendil Province, Bulgaria
*Břest, Czech Republic
*Brest, France
**Arrondissement of Brest
**Brest Bretagne Airport
** Château de Brest
*Brest, ...
and
La Rochelle
La Rochelle (, , ; Poitevin-Saintongeais: ''La Rochéle''; oc, La Rochèla ) is a city on the west coast of France and a seaport on the Bay of Biscay, a part of the Atlantic Ocean. It is the capital of the Charente-Maritime department. With ...
;
* converted merchant ships, e.g.,
Merchant aircraft carrier
A merchant aircraft carrier (also known as a MAC ship, the Admiralty's official 'short name') was a limited-purpose aircraft carrier operated under British and Dutch civilian registry during World War II. MAC ships were adapted by adding a flig ...
s,
Catapult Aircraft Merchantman and
armed merchant cruisers
*
Q-ship
Q-ships, also known as Q-boats, decoy vessels, special service ships, or mystery ships, were heavily armed merchant ships with concealed weaponry, designed to lure submarines into making surface attacks. This gave Q-ships the chance to open f ...
s, submarine-hunters disguised as unarmed merchant ships to lure submarines into an attack
* more convoy escorts, including cheaply produced yet effective
destroyer escorts
Destroyer escort (DE) was the United States Navy mid-20th-century classification for a warship designed with the endurance necessary to escort mid-ocean convoys of merchant marine ships.
Development of the destroyer escort was promoted by th ...
/
frigate
A frigate () is a type of warship. In different eras, the roles and capabilities of ships classified as frigates have varied somewhat.
The name frigate in the 17th to early 18th centuries was given to any full-rigged ship built for speed and ...
s (as
corvette
A corvette is a small warship. It is traditionally the smallest class of vessel considered to be a proper (or " rated") warship. The warship class above the corvette is that of the frigate, while the class below was historically that of the slo ...
s were meant as a stopgap), and
escort carrier
The escort carrier or escort aircraft carrier (U.S. hull classification symbol CVE), also called a "jeep carrier" or "baby flattop" in the United States Navy (USN) or "Woolworth Carrier" by the Royal Navy, was a small and slow type of aircraft ...
s;
* fighter aircraft (carried by escort carriers and merchant aircraft carriers) that would drive off German bombers and attack U-boats
* long-range aircraft patrols to find and attack U-boats;
* improved anti-submarine weapons such as the
hedgehog
A hedgehog is a spiny mammal of the subfamily Erinaceinae, in the eulipotyphlan family Erinaceidae. There are seventeen species of hedgehog in five genera found throughout parts of Europe, Asia, and Africa, and in New Zealand by introducti ...
;
* larger convoys, allowing more escorts per convoy as well as the extraction of enough escorts to form hunter-killer support groups that were not attached to a particular convoy
* allocating vessels to convoys according to speed, so that faster ships were less exposed.
They were also aided by
* improved
sonar
Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigation, navigate, measure distances (ranging), communicate with or detect o ...
(
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 on or ...
) allowing escort vessels to better track U-boats;
* breaking the
German naval cipher;
* improved
radar
Radar is a detection system that uses radio waves to determine the distance (''ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, w ...
and
radio direction finding
Direction finding (DF), or radio direction finding (RDF), isin accordance with International Telecommunication Union (ITU)defined as radio location that uses the reception of radio waves to determine the direction in which a radio station ...
allowing planes to find and destroy U-boats;
Convoy battles
Many naval battles of World War II were fought around convoys, including:
*
Convoy PQ 16
Convoy PQ 16 (21–30 May 1942) was an Arctic convoy of British, United States and Allied ships from Iceland to Murmansk and Archangelsk in the Soviet Union during the Second World War. The convoy was the largest yet and was provided with a consi ...
, May 1942
*
Convoy PQ 17
PQ 17 was the code name for an Allied Arctic convoy during the Second World War. On 27 June 1942, the ships sailed from Hvalfjörður, Iceland, for the port of Arkhangelsk in the Soviet Union. The convoy was located by German forces on 1 July, aft ...
, June–July 1942
*
Convoy PQ 18
Convoy PQ 18 was an Arctic convoy of forty Allied freighters from Scotland and Iceland to Arkhangelsk in the Soviet Union in the war against Nazi Germany. The convoy departed Loch Ewe, Scotland on 2 September 1942, rendezvoused with more ships an ...
, September 1942
*
Operation Pedestal
Operation Pedestal ( it, Battaglia di Mezzo Agosto, Battle of mid-August), known in Malta as (), was a British operation to carry supplies to the island of Malta in August 1942, during the Second World War. Malta was a base from which British ...
, August 1942
* The
Naval Battle of Guadalcanal
The Naval Battle of Guadalcanal, sometimes referred to as the Third and Fourth Battles of Savo Island, the Battle of the Solomons, the Battle of Friday the 13th, or, in Japanese sources, the , took place from 12 to 15 November 1942, and was t ...
, November 1942
* The
Battle of the Barents Sea
The Battle of the Barents Sea was a World War II naval engagement on 31 December 1942 between warships of the German Navy (''Kriegsmarine'') and British ships escorting convoy JW 51B to Kola Inlet in the USSR. The action took place in the Bare ...
, December 1942
* The
Battle of the Bismarck Sea
The Battle of the Bismarck Sea (2–4 March 1943) took place in the South West Pacific Area (SWPA) during World War II when aircraft of the U.S. Fifth Air Force and the Royal Australian Air Force (RAAF) attacked a Japanese convoy carrying troops ...
, March 1943
The convoy prefix indicates the route of the convoy. For example, 'PQ' would be Iceland to Northern Russia and 'QP' the return route.
Analysis
The success of convoys as an anti-submarine tactic during the world wars can be ascribed to several reasons related to U-boat capabilities, the size of the ocean and convoy escorts.
In practice,
Type VII
Type VII U-boats were the most common type of German World War II U-boat. 703 boats were built by the end of the war. The lone surviving example, , is on display at the Laboe Naval Memorial located in Laboe, Schleswig-Holstein, Germany.
Conc ...
and
Type IX U-boat
The Type IX U-boat was designed by Nazi Germany's ''Kriegsmarine'' in 1935 and 1936 as a large ocean-going submarine for sustained operations far from the home support facilities. Type IX boats were briefly used for patrols off the eastern Unit ...
s were limited in their capabilities. Submerged speed and endurance was limited and not suited for overhauling many ships. Even a surfaced U-boat could take several hours to gain an attack position. Torpedo capacity was also restricted to around fourteen (Type VII) or 24 (Type IX), thus limiting the number of attacks that could be made, particularly when multiple firings were necessary for a single target. There was a real problem for the U-boats and their adversaries in finding each other; with a tiny proportion of the ocean in sight, without intelligence or radar, warships and even aircraft would be fortunate in coming across a submarine. The Royal Navy and later the United States Navy each took time to learn this lesson. Conversely, a U-boat's radius of vision was even smaller and had to be supplemented by regular long-range reconnaissance flights.
For both major allied navies, it had been difficult to grasp that, however large a convoy, its "footprint" (the area within which it could be spotted) was far smaller than if the individual ships had traveled independently. In other words, a submarine had less chance of finding a single convoy than if it were scattered as single ships. Moreover, once an attack had been made, the submarine would need to regain an attack position on the convoy. If, however, an attack were thwarted by escorts, even if the submarine had escaped damage, it would have to remain submerged for its own safety and might only recover its position after many hours' hard work. U-boats patrolling areas with constant and predictable flows of sea traffic, such as the United States Atlantic coast in early 1942, could dismiss a missed opportunity in the certain knowledge that another would soon present itself.
The destruction of submarines required their discovery, an improbable occurrence on aggressive patrols, by chance alone. Convoys, however, presented irresistible targets and could not be ignored. For this reason, the U-boats presented themselves as targets to the escorts with increasing possibility of destruction. In this way, the Ubootwaffe suffered severe losses, for little gain, when pressing pack attacks on well-defended convoys.
Post-World War II
The largest convoy effort since World War II was
Operation Earnest Will
Operation Earnest Will (24 July 1987 – 26 September 1988) was the American military protection of Kuwaiti-owned tankers from Iranian attacks in 1987 and 1988, three years into the Tanker War phase of the Iran–Iraq War. It was the largest nav ...
, the
U.S. Navy's
The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the worl ...
1987–88 escort of reflagged
Kuwait
Kuwait (; ar, الكويت ', or ), officially the State of Kuwait ( ar, دولة الكويت '), is a country in Western Asia. It is situated in the northern edge of Eastern Arabia at the tip of the Persian Gulf, bordering Iraq to the nort ...
i
tankers in the
Persian Gulf
The Persian Gulf ( fa, خلیج فارس, translit=xalij-e fârs, lit=Gulf of Persis, Fars, ), sometimes called the ( ar, اَلْخَلِيْجُ ٱلْعَرَبِيُّ, Al-Khalīj al-ˁArabī), is a Mediterranean sea (oceanography), me ...
during the
Iran–Iraq War
The Iran–Iraq War was an armed conflict between Iran and Iraq that lasted from September 1980 to August 1988. It began with the Iraqi invasion of Iran and lasted for almost eight years, until the acceptance of United Nations Security Council ...
.
In the present day, convoys are used as a tactic by navies to deter
pirates off the coast of Somalia from capturing unarmed civilian freighters who would otherwise pose easy targets if they sailed alone.
Road convoys
Humanitarian aid convoys
The word "convoy" is also associated with groups of road vehicles being driven, mostly by volunteers, to deliver
humanitarian aid
Humanitarian aid is material and logistic assistance to people who need help. It is usually short-term help until the long-term help by the government and other institutions replaces it. Among the people in need are the homeless, refugees, and ...
, supplies, and—a stated objective in some cases—"solidarity".
In the 1990s these convoys became common traveling from
Western Europe
Western Europe is the western region of Europe. The region's countries and territories vary depending on context.
The concept of "the West" appeared in Europe in juxtaposition to "the East" and originally applied to the ancient Mediterranean ...
to countries of the former
Yugoslavia
Yugoslavia (; sh-Latn-Cyrl, separator=" / ", Jugoslavija, Југославија ; sl, Jugoslavija ; mk, Југославија ;; rup, Iugoslavia; hu, Jugoszlávia; rue, label=Pannonian Rusyn, Югославия, translit=Juhoslavija ...
, in particular
Bosnia
Bosnia and Herzegovina ( sh, / , ), abbreviated BiH () or B&H, sometimes called Bosnia–Herzegovina and often known informally as Bosnia, is a country at the crossroads of south and southeast Europe, located in the Balkans. Bosnia and He ...
and
Kosovo
Kosovo ( sq, Kosova or ; sr-Cyrl, Косово ), officially the Republic of Kosovo ( sq, Republika e Kosovës, links=no; sr, Република Косово, Republika Kosovo, links=no), is a partially recognised state in Southeast Euro ...
, to deal with the aftermath of the wars there. They also travel to countries where standards of care in institutions such as orphanages are considered low by Western European standards, such as
Romania
Romania ( ; ro, România ) is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern, and Southeast Europe, Southeastern Europe. It borders Bulgaria to the south, Ukraine to the north, Hungary to the west, S ...
; and where other disasters have led to problems, such as around the
Chernobyl disaster
The Chernobyl disaster was a nuclear accident that occurred on 26 April 1986 at the No. 4 reactor in the Chernobyl Nuclear Power Plant, near the city of Pripyat in the north of the Ukrainian SSR in the Soviet Union. It is one of only two nuc ...
in
Belarus
Belarus,, , ; alternatively and formerly known as Byelorussia (from Russian ). officially the Republic of Belarus,; rus, Республика Беларусь, Respublika Belarus. is a landlocked country in Eastern Europe. It is bordered by R ...
and
Ukraine
Ukraine ( uk, Україна, Ukraïna, ) is a country in Eastern Europe. It is the second-largest European country after Russia, which it borders to the east and northeast. Ukraine covers approximately . Prior to the ongoing Russian inv ...
.
The convoys are made possible partly by the relatively small geographic distances between the stable and affluent countries of Western Europe, and the areas of need in
Eastern Europe
Eastern Europe is a subregion of the Europe, European continent. As a largely ambiguous term, it has a wide range of geopolitical, geographical, ethnic, cultural, and socio-economic connotations. The vast majority of the region is covered by Russ ...
and, in a few cases,
North Africa
North Africa, or Northern Africa is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region, and it is sometimes defined as stretching from the Atlantic shores of Mauritania in ...
and even
Iraq
Iraq,; ku, عێراق, translit=Êraq officially the Republic of Iraq, '; ku, کۆماری عێراق, translit=Komarî Êraq is a country in Western Asia. It is bordered by Turkey to Iraq–Turkey border, the north, Iran to Iran–Iraq ...
. They are often justified because although less directly cost-effective than mass freight transport, they emphasise the support of large numbers of small groups, and are quite distinct from multinational organisations such as
United Nations
The United Nations (UN) is an intergovernmental organization whose stated purposes are to maintain international peace and international security, security, develop friendly relations among nations, achieve international cooperation, and be ...
humanitarian efforts.
Truckers' convoys
Truckers' convoys consisting of
semi-trailer truck
A semi-trailer truck, also known as a semitruck, (or semi, eighteen-wheeler, big rig, tractor-trailer or, by synecdoche, a semitrailer) is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer ...
s and/or
petrol tankers are more similar to a
caravan
Caravan or caravans may refer to:
Transport and travel
*Caravan (travellers), a group of travellers journeying together
**Caravanserai, a place where a caravan could stop
*Camel train, a convoy using camels as pack animals
*Convoy, a group of veh ...
than a military convoy.
Truckers' convoys were created as a byproduct of the USA's
national 55 mph speed limit and 18-wheelers becoming the prime targets of
speed trap
Speed limits are enforced on most public roadways by authorities, with the purpose to improve driver compliance with speed limits. Methods used include roadside speed traps set up and operated by the police and automated roadside 'speed camera' ...
s. Most truckers had difficult schedules to keep and as a result had to maintain a speed above the posted speed limit to reach their destinations on time. Convoys were started so that multiple trucks could run together at a high speed with the rationale being that if they passed a speed trap the police would only be able to pull over one of the trucks in the convoy. When driving on a highway, convoys are also useful to conserve fuel by
drafting.
The film
''Convoy'', inspired by a 1975
song of the same name, explores the camaraderie between
truck driver
A truck driver (commonly referred to as a trucker, teamster, or driver in the United States and Canada; a truckie in Australia and New Zealand; a HGV driver in the United Kingdom, Ireland and the European Union, a lorry driver, or driver in ...
s, where the culture of the
CB radio
Citizens band radio (also known as CB radio), used in many countries, is a land mobile radio system, a system allowing short-distance person-to-many persons bidirectional voice communication among individuals, using two way radios operating on ...
encourages truck drivers to travel in convoys.
Special convoy rights
![Spanish RG-31 Nyala in Afghanistan-2010](https://upload.wikimedia.org/wikipedia/commons/3/3e/Spanish_RG-31_Nyala_in_Afghanistan-2010.jpg)
The Highway Code of several European countries (Norway, Italy, Greece, Netherlands, Germany, Austria, Switzerland, possibly more) includes special rights for marked convoys. They have to be treated like a single vehicle. If the first vehicle has passed an intersection, all others may do so without interruption. If other road users overtake the convoy, they aren't allowed to split into the queue. Clear and uniform marking has been required in court decisions for these rights to apply. Operating such convoy usually needs special permission, but there are exemptions for emergency and catastrophe intervention. Common practice is, to operate with the same style of marking as NATO convoys:
STANAG
In NATO, a standardization agreement (STANAG, redundantly: STANAG agreement) defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the alliance. Each NATO st ...
2154 marking plus country-specific augmentation listed in Annex B to the STANAG.
During the
Cold War
The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because the ...
with its high number of military exercises, the military was the main user of convoy rights. Today, catastrophes like large-scale flooding might bring a high number of flagged convoys to the roads. Large-scale evacuations for the disarming of World War II bombs are another common reason for
non-governmental organization
A non-governmental organization (NGO) or non-governmental organisation (see spelling differences) is an organization that generally is formed independent from government. They are typically nonprofit entities, and many of them are active in h ...
(NGO) unit movements under convoy rights.
Storm convoys
In Norway, "convoy driving" ( no, kolonnekjøring) is used during winter in case weather is too bad for vehicles to pass on their own. Convoy driving is initiated when the strong wind quickly fills the road with snow behind snowplows, particularly on mountain passes. Only a limited number of vehicles are allowed for each convoy and convoy leader is obliged to decline vehicles not fit for the drive. Storm convoys are prone to
multiple-vehicle collision
A multiple vehicle collision (colloquially known as a pile-up, multi-car collision, multi-vehicle collision, or simply a multi) is a road traffic collision involving many vehicles. Generally occurring on high-capacity and high-speed routes such ...
. Convoy driving is used through
Hardangervidda
Hardangervidda ( en, Hardanger Plateau) is a mountain plateau (Norwegian: ''vidde'') in central southern Norway, covering parts of Vestland, Vestfold og Telemark, and Viken counties. It is the largest plateau of its kind in Europe, with a cold ye ...
pass on
road 7 during blizzards. Convoy is sometimes used on road E134 at the highest and most exposed sections during bad weather. On
European route E6
European route E6 ( no, Europavei 6, sv, Europaväg 6, or simply E6) is the main north-south thoroughfare through Norway as well as the west coast of Sweden. It is long and runs from the southern tip of Sweden at Trelleborg, into Norway and t ...
through
Saltfjellet
Saltfjellet is a mountain area in Nordland county, Norway that separates the two regions of Helgeland and Salten. It is also a cultural border between the Southern and Central parts of Sápmi.
Geography and environment
The Saltfjell is one of the ...
pass convoy driving is often used when wind speed is over 15–20 m/s (
fresh or strong gale) in winter conditions. During the winter of 1990 there was convoy driving for almost 500 hours at Saltfjellet
See also
*
Camel train
A camel train or caravan is a series of camels carrying passengers and goods on a regular or semi-regular service between points. Despite rarely travelling faster than human walking speed, for centuries camels' ability to withstand harsh cond ...
*
Motorcade
A motorcade, or autocade, is a procession of vehicles.
Etymology
The term ''motorcade'' was coined by Lyle Abbot (in 1912 or 1913 when he was automobile editor of the ''Arizona Republican''), and is formed after ''cavalcade'', playing off of ...
*
Road train
A road train, land train or long combination vehicle (LCV) is a trucking vehicle used to move road freight more efficiently than semi-trailer trucks. It consists of two or more trailers or semi-trailers hauled by a prime mover.
History
Early ...
*
Shoaling and schooling
In biology, any group of fish that stay together for social reasons are shoaling, and if the group is swimming in the same direction in a coordinated manner, they are schooling. In common usage, the terms are sometimes used rather loosely. Ab ...
*
Wagon train
''Wagon Train'' is an American Western series that aired 8 seasons: first on the NBC television network (1957–1962), and then on ABC (1962–1965). ''Wagon Train'' debuted on September 18, 1957, and became number one in the Nielsen ratings. It ...
References
Further reading
* Allard, Dean C. "Anglo-American Naval Differences During World War I." ''Military Affairs: The Journal of Military History, Including Theory and Technology'' (1980): 75–81. in JSTOR
* Crowhurst, R. Patrick. "The Admiralty and the Convoy System in the Seven Years War." ''The Mariner's Mirror'' (1971) 57#2 pp: 163–173.
* Gasslander, Olle. "The convoy affair of 1798." ''Scandinavian Economic History Review'' 2.1 (1954): 22–30
abstract* Herwig, Holger H., and David F. David. "The Failure of Imperial Germany's Undersea Offensive Against World Shipping, February 1917–October 1918." ''Historian'' (1971) 33#4 pp: 611–636
online* Lewis, James Allen. ''The Spanish convoy of 1750: heaven's hammer and international diplomacy'' (Univ Press of Florida, 2009)
* Syrett, David. "The Organization Of British Trade Convoys during the American War, 1775–1783." ''The Mariner's Mirror'' (1976) 62#2 pp: 169–181
abstract* Thompson, F. J. "The Merchant Ship in Convoy." ''The RUSI Journal'' 79.513 (1934): 69–86.
Primary sources
* Connor, Guy, and Jeffrey L. Patrick. "On Convoy Duty in World War I: The Diary of Hoosier Guy Connor." ''Indiana Magazine of History'' (1993)
online
World War II
* Edwards, Bernard. ''The road to Russia: Arctic convoys 1942'' (Leo Cooper Books, 2002)
* Forczyk, Robert. ''Fw 200 Condor Vs Atlantic Convoy, 1941-1943'' (Osprey Publishing, 2010)
* Hague, Arnold. ''The allied convoy system, 1939-1945: its Organization, Defence and Operation'' (Naval Institute Press, 2000)
* Kaplan, Philip, and Jack Currie. ''Convoy: merchant sailors at war, 1939-1945'' (Aurum Press, 1998)
* Middlebrook, Martin. ''Convoy: the Battle for Convoys SC. 122 and HX. 229'' (Allen Lane, 1976)
* Milner, Marc. "Convoy Escorts: Tactics, Technology and Innovation in the Royal Canadian Navy, 1939-1943." Military Affairs: The Journal of Military History, Including Theory and Technology (1984): 19–25.
* O'Hara, Vincent P. ''In Passage Perilous: Malta and the Convoy Battles of June 1942'' (Indiana University Press, 2012)
* Smith, Peter Charles. ''Arctic Victory: The Story of Convoy PQ 18'' (Kimber, 1975)
* Winton, John. ''Convoy, The Defense of Sea Trade 1890–1990'', 1983.
Official history
* Commander in Chief, United States Fleet, "Convoy and Routing." Washington, 1945. 147 pp.
External links
– a comprehensive analysis of certain naval convoy routes
Aid Convoy– a humanitarian aid charity running convoys
{{Authority control
Naval warfare
Water transport
Road transport
Vehicle operation