A sea lane, sea road or shipping lane is a regularly used navigable route for large water vessels (

ship A ship is a large watercraft that travels the world's oceans and other sufficiently deep waterways, carrying cargo or passengers, or in support of specialized missions, such as defense, research, and fishing. Ships are generally distinguished ...

s) on wide

waterway A waterway is any navigable body of water. Broad distinctions are useful to avoid ambiguity, and disambiguation will be of varying importance depending on the nuance of the equivalent word in other languages. A first distinction is necessary ...

s such as

ocean The ocean (also the sea or the world ocean) is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the wor ...

s and large

lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...

s, and is preferably safe, direct and economic. During 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 nava ...

, they were determined by the distribution of

land mass A landmass, or land mass, is a large region or area of land. The term is often used to refer to lands surrounded by an ocean or sea, such as a continent or a large island. In the field of geology, a landmass is a defined section of continent ...

es but also by the

prevailing wind In meteorology, prevailing wind in a region of the Earth's surface is a surface wind that blows predominantly from a particular direction. The dominant winds are the trends in direction of wind with the highest speed over a particular point o ...

s, whose discovery was crucial for the success of long maritime voyages. Sea lanes are very important for seaborne trade.

History

The establishment of the

North Atlantic The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe a ...

sea lanes was inspired by the sinking of the US

mail The mail or post is a system for physically transporting postcards, letters, and parcels. A postal service can be private or public, though many governments place restrictions on private systems. Since the mid-19th century, national postal sys ...

steamer SS ''Arctic'' by

collision In physics, a collision is any event in which two or more bodies exert forces on each other in a relatively short time. Although the most common use of the word ''collision'' refers to incidents in which two or more objects collide with great fo ...

with the French steamer SS ''Vesta'' in October 1854 which resulted in the loss of over 300 lives. Lieutenant M. F. Maury of the US Navy first published a section titled "Steam Lanes Across the Atlantic" in his 1855 ''Sailing Directions'' proposing sea lanes along the 42 degree

latitude In geography, latitude is a coordinate that specifies the north– south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from –90° at the south pole to 90° at the north ...

. A number of international conferences and committees were held in 1866, 1872, 1887, 1889, and 1891 all of which left the designation of sea lanes to the principal trans-Atlantic steamship companies at the time;

Cunard Cunard () is a British shipping and cruise line based at Carnival House at Southampton, England, operated by Carnival UK and owned by Carnival Corporation & plc. Since 2011, Cunard and its three ships have been registered in Hamilton, Ber ...

, White Star, Inman,

National Line The National Line, formally named the National Steam Navigation Company, was a British passenger line that operated steamship service in the North Atlantic Ocean in the late 19th century. The company was founded in 1863, with the intention of ser ...

, and

Guion Line The Liverpool and Great Western Steamship Company, known commonly as the Guion Line, was a British passenger service that operated the Liverpool-Queenstown-New York route from 1866 to 1894. While incorporated in Great Britain, 52% of the company ...

s. In 1913–1914 the International Convention for Safety of Life at Sea held in

London London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...

again reaffirmed that the selection of routes across the Atlantic in both directions is left to the responsibility of the steamship companies. Shipping lanes came to be by analysing the prevailing winds. The trade winds allowed ships to sail towards the west quickly, and the westerlies allowed ships to travel to the east quickly. As such, the sea lanes are mostly chosen to take full advantage of these winds. Currents are also similarly followed as well, which also gives an advantage to the vessel. Some routes, such as that from

Cape Town Cape Town ( af, Kaapstad; , xh, iKapa) is one of South Africa's three capital cities, serving as the seat of the Parliament of South Africa. It is the legislative capital of the country, the oldest city in the country, and the second largest ...

Rio de Janeiro Rio de Janeiro ( , , ; literally 'River of January'), or simply Rio, is the capital of the state of the same name, Brazil's third-most populous state, and the second-most populous city in Brazil, after São Paulo. Listed by the GaWC as a b ...

(passing

Tristan da Cunha Tristan da Cunha (), colloquially Tristan, is a remote group of volcano, volcanic islands in the South Atlantic Ocean. It is the Extreme points of Earth, most remote inhabited archipelago in the world, lying approximately from Cape Town, Sou ...

), were not able to take advantage of these natural factors. Main sea lanes may also attract

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. ''

Pax Britannica ''Pax Britannica'' (Latin for "British Peace", modelled after '' Pax Romana'') was the period of relative peace between the great powers during which the British Empire became the global hegemonic power and adopted the role of a "global poli ...

'' was the period from 1815–1914 during which the British

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 Fr ...

controlled most of the key maritime trade routes, and also suppressed piracy and the slave trade. During

World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was List of wars and anthropogenic disasters by death toll, one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, ...

, as German

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 ro ...

s began hitting

American American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, pe ...

and

British British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, ...

shipping Freight transport, also referred as ''Freight Forwarding'', is the physical process of transporting commodities and merchandise goods and cargo. The term shipping originally referred to transport by sea but in American English, it has been ...

, the Allied trade vessels began to move out of the usual sea lanes to be escorted by

naval ship A naval ship is a military ship (or sometimes boat, depending on classification) used by a navy. Naval ships are differentiated from civilian ships by construction and purpose. Generally, naval ships are Damage control, damage resilient a ...

Advantages

Although most ships no longer use sails (having switched them for engines), the wind still creates waves, and this can cause heeling. As such following the overall direction of the trade winds and westerlies is still very useful. However, it is best for any vessel that is not engaged in trading, or is smaller than a certain length, to avoid the lanes. This is not only because the slight chance of a collision with a large ship that can easily cause a smaller ship to sink, but also because large vessels are much less maneuverable than smaller ships, and need much more depth. Smaller ships can thus easily take courses that are nearer to the shore. Unlike with road traffic, there is no exact "road" a ship must follow, so this can easily be done. Shipping lanes are the busiest parts of the sea, thus being a useful place for stranded boaters whose boats are sinking or people on a liferaft to boat to, and be rescued by a passing ship.

Threats from shipping lanes

Shipping lanes may pose threats to some ocean-going craft. Small boats risk conflicts with bigger ships if they follow the shipping lanes. Sections of lanes exist which can be shallow or have some kind of obstruction (such as sand banks). This threat is greatest when passing some narrows, such as between islands in the Indian Ocean (e.g. in Indonesia) as well as between islands in the Pacific (e.g. near the Marquesas islands, Tahiti) Some shipping lanes, such as the

Straits of Malacca The Strait of Malacca is a narrow stretch of water, 500 mi (800 km) long and from 40 to 155 mi (65–250 km) wide, between the Malay Peninsula ( Peninsular Malaysia) to the northeast and the Indonesian island of Sumatra to the southwest, co ...

off

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Gui ...

and

Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federal constitutional monarchy consists of thirteen states and three federal territories, separated by the South China Sea into two regions: Peninsular Malaysia and Borneo's East Mal ...

, and the waters off

Somalia Somalia, , Osmanya script: 𐒈𐒝𐒑𐒛𐒐𐒘𐒕𐒖; ar, الصومال, aṣ-Ṣūmāl officially the Federal Republic of SomaliaThe ''Federal Republic of Somalia'' is the country's name per Article 1 of thProvisional Constitut ...

, are frequented by

pirates 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 ...

operating independently or as

privateers 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 ...

(for companies and countries). Passing ships run the risk of being attacked and held for ransom.

Busiest shipping lanes

The world's busiest shipping lane is the

Dover Strait The Strait of Dover or Dover Strait (french: Pas de Calais - ''Strait of Calais''), is the strait at the narrowest part of the English Channel, marking the boundary between the Channel and the North Sea, separating Great Britain from continent ...

. 500–600 vessels per day traverse the narrow strait and in 1999 1.4 billion tonnes gross, carried by 62,500 vessels passed through the strait.

References

{{DEFAULTSORT:Sea Lane

Lane In road transport, a lane is part of a roadway that is designated to be used by a single line of vehicles to control and guide drivers and reduce traffic conflicts. Most public roads (highways) have at least two lanes, one for traffic in each ...

Trade routes

History

Advantages

Threats from shipping lanes

Busiest shipping lanes

See also

References