Construction of the Suez Canal: History, Map, Length, and Why It Mattered

The idea of building the Suez Canal was born out of the sheer distance that sea travel between Europe and Asia demanded. More than a century ago, sailors leaving Hamburg for Bombay, one of the largest ports of eastern India, had to make an enormous detour, because no short passage linked the Mediterranean Sea with the Red Sea.

How the idea of building the Suez Canal arose

Before the canal existed, ships bound for Asia had only two long routes. Some rounded the southern tip of Africa near the Cape of Good Hope, following the path of the Portuguese navigator Bartolomeu Dias, while others sailed westward in the wake of Magellan and skirted the southern tip of South America (see more: The Discovery of the Pacific Ocean).

Great Britain and France, which had seized large overseas colonies as far back as the Middle Ages, stood to gain the most from shortening this long journey. The searching gaze of politicians, economists, shipowners and sailors turned increasingly toward the Mediterranean Sea, to the point where the Red Sea stretched like a long serpent from north to south between Africa and Asia.

Only a narrow isthmus dotted with lakes separated the northern shore of the Red Sea from the Mediterranean. As long as this strip of land — the Isthmus of Suez — remained, the Mediterranean Sea was simply a great dead end. "What a pity," shipowners thought, "that there is no through passage between Africa and Arabia."

Ancient attempts to dig a canal: the canals of the pharaohs

The dream of a waterway across the Isthmus of Suez was thousands of years old, because Egyptian pharaohs had tried to cut a water canal through the region some 3,000 years earlier. Rather than joining the two seas directly, these ancient channels ran through the Wadi Tumilat valley to link the Nile River — and therefore the Mediterranean — with the Red Sea.

The pharaoh Necho II is credited with beginning one of the earliest such projects, and later the Persian king Darius I completed a navigable canal connecting the Nile to the Red Sea. In the Ptolemaic era, Ptolemy II restored and improved the waterway, which remained in intermittent use into the Roman period; the name of Cleopatra is also associated with the trade routes of this age. These precursor canals silted up repeatedly and were abandoned, but they proved that a passage was possible and kept the idea alive for later generations.

Modern canal proposals

European interest in reviving the canal grew steadily from the 15th century onward, driven by speculation about faster trade routes to Asia. The decisive modern spark came with the French occupation of Egypt, when Napoleon Bonaparte's engineers inspected the remains of the ancient pharaonic canal. Their surveys mistakenly reported a large difference in water level between the Red Sea and the Mediterranean, a conclusion that discouraged construction for decades until it was later disproved.

The Industrial Revolution, with its booming seaborne commerce and steam-powered shipping, made a direct passage between Europe and Asia more valuable than ever. As European engineers refined their plans, the notion of cutting straight across the Isthmus of Suez — without relying on the Nile — moved from speculation toward a workable project.

The Suez Canal Company

The idea of building a canal at the northern end of the Red Sea near Suez matured into a concrete plan. To carry it out, the British, French and Austrians founded the first Suez joint-stock company in 1846. Old designs were discarded and new ones drawn up as the years passed.

Year followed year, and much water flowed from the Nile to the sea. In that time people invented nitroglycerine, the powered airship, and the bicycle, discovered the new planet Neptune and the anthrax microbe — yet the sea route to India had still not grown any shorter.

Ferdinand de Lesseps and the Negrelli project

In 1854 the French diplomat Ferdinand de Lesseps took charge of the enterprise and gave it the drive it had lacked. He examined the canal design proposed by the Austrian engineer Alois Negrelli, secured from the Egyptian ruler a concession to build the Suez Canal across Egyptian territory, and organized the undertaking into a large new venture. This concession granted a 99-year right to operate the waterway once it was complete.

Ferdinand de Lesseps combined the roles of diplomat and organizer, and above all he knew how to raise money. The company he assembled to manage construction and operation became known as the Suez Canal Company, the Compagnie de Suez, which would control the canal for generations.

Financing construction and the sale of shares

To pay for the works, de Lesseps founded a large joint-stock company and sold shares widely. French investors bought the bulk of the stock, while the Egyptian ruler took a substantial holding of his own, leaving Great Britain — wary of French influence in the eastern Mediterranean — largely on the sidelines at first. De Lesseps had a rare talent for extracting capital, and the raising of funds itself became one of the great campaigns of the whole project.

Building the canal

Battalions of labourers pitched their tents, and on 2 April 1859 the first spade of earth was turned near what would become Port Said. At first glance the construction of the canal seemed straightforward, since the route crossed no significant change in elevation.

Technical features and the absence of locks

Because the Mediterranean Sea and the Red Sea lie at essentially the same level, the Suez Canal needed neither locks nor ship-lifts — a decisive advantage over lock-based waterways such as the later Panama Canal. The channel ran across the isthmus through a chain of natural depressions, including the Great Bitter Lake, which acted as a ready-made reservoir along the route. This sea-level design simplified navigation but demanded enormous volumes of excavation across open desert.

Hardships of construction: heat, cholera and the death of workers

Despite the simple engineering, the work advanced slowly. The construction machines common on later building sites did not yet exist, and the deadly heat made every task an ordeal. A cholera epidemic swept through the camps, and altogether some 20,000 workers are said to have died during the building of the canal. Only after ten years of labour was the Suez Canal — 160 kilometres long, 60 metres wide and 12 metres deep — finally opened.

Labour disputes and forced labour

Much of the early digging relied on the corvée, a system of forced labour under which Egyptian peasants were conscripted in their tens of thousands to excavate the channel by hand. International pressure and disputes over this practice eventually forced the Suez Canal Company to reduce its dependence on conscripted workers and to bring in mechanical dredgers and steam excavators. These machines sped up the final stages of construction, but the human cost of the early years was never forgotten by the labourers' descendants.

Completion and the opening of the canal in 1869

The Suez Canal was completed and formally opened in November 1869, cutting the sea distance between Europe and Asia dramatically and reshaping the map of world trade. What had once required a voyage of more than 9,000 kilometres around Africa could now be achieved through a single narrow waterway across the Isthmus of Suez.

The grand inauguration ceremony

The opening was marked by a lavish inauguration attended by European royalty and dignitaries, with a procession of ships passing through the new channel from Port Said southward. The celebrations underscored how much prestige France and the Suez Canal Company attached to the achievement, even as no one paused to remember the workers who had died to make it possible.

Tolls for passage through the canal

Once the canal opened, the priority was to recover as quickly as possible the 400 million francs that construction had consumed. Collectors of the joint-stock company sat at the gates of the canal and levied a toll on every ship that passed.

Shipping and the growth in vessel traffic

The enterprise more than justified itself. In the year the canal opened, 486 ships passed through the new waterway; forty years later that number had grown tenfold, and by 1956 traffic reached some 15,000 vessels a year. As traffic swelled, the shares of the Suez Canal Company rose steadily in value, turning the toll gates into one of the most profitable choke points in world trade.

The gates of the Suez Canal

Great Britain was well satisfied with the canal and began to settle into the canal zone as though it were home. First it pushed aside the French and Austrians, its former partners, then it built coaling bunkers along the waterway to fuel its ships.

British investment and control of the Suez Canal

Britain's grip tightened as it recognised how vital the route was to its empire. A long line of military fortifications soon joined the coaling stations, and the arabs had long called the entrance "Bab-el-Mandeb" — the "Gates of Death." The Suez Canal zone was transformed into one of the largest bases of the British Empire, guarding the lifeline to India and the Far East.

The British buyout of the canal company's shares

Great Britain gained its financial foothold in 1875, when the heavily indebted Egyptian ruler sold his large block of shares in the Suez Canal Company. The British government seized the opportunity and purchased the entire holding, becoming the single largest shareholder overnight. From that moment London held both a strategic and a commercial interest in the waterway, and British influence over its management steadily deepened.

The strategic and economic importance of the canal

The Suez Canal became the single most important shortcut between Europe and Asia, sparing shipping the long detour around the Cape of Good Hope. Its economic value lay in the goods, troops and fuel that could now move swiftly between Britain and its Asian colonies, while its military significance made control of the canal a permanent objective of the great powers throughout the age of the Ottoman Empire's decline and beyond.

The Convention of Constantinople and maritime rights

The legal status of the waterway was fixed by the Convention of Constantinople of 1888, which declared the Suez Canal open to vessels of every nation in both peace and war. This treaty established the principle of free passage that later governments and shipping companies would invoke, even as physical control of the canal remained a source of international conflict.

Nationalisation of the Suez Canal

The year 1952 was a moment of great national awakening for the people of Egypt. They overthrew the government of King Farouk, which had been backed by Britain, and proclaimed a republic, with Gamal Abdel Nasser rising to lead it.

Nationalisation of the canal by President Nasser in 1956

In 1956, at a mass rally, Gamal Abdel Nasser announced the nationalisation of the Suez Canal and demanded that the British quit its zone. Through armed intervention, Great Britain and France — joined by Israel — tried to save their shaken positions, to halt the collapse of the colonial system and turn the wheel of history backward. This armed confrontation became known as the Suez Crisis.

But the Egyptian people, fighting for a just cause, prevailed. The descendants of the workers who had helped build the Suez Canal took this crucial waterway between Europe and Asia into their own hands. The shareholders of the canal could no longer pile up capital by collecting tolls; henceforth all revenue would go toward raising the wellbeing of an entire nation, administered by the newly created Suez Canal Authority.

Closure of the canal after the Six-Day War

The canal's role as a battleground continued after the Suez Crisis. During the Six-Day War of 1967 between Israel and Egypt, the Suez Canal became the front line between the two armies, with Israeli forces holding the Sinai Peninsula on the eastern bank. Blocked by sunken ships and mines, the canal was closed to all traffic for eight years, forcing global shipping once again onto the long route around Africa.

Reopening under President Anwar el-Sadat in 1975

The waterway reopened in 1975 under President Anwar el-Sadat, after the channel had been cleared of wartime wreckage and unexploded ordnance. Its return to service restored a vital link for world trade and marked a step toward stability in the region, allowing Egypt to resume the toll income that the closure had denied it for nearly a decade.

Expansion and modernisation of the canal

The Suez Canal has been widened and deepened many times since its opening, because the modest original channel could not keep pace with the growing size of ships. Continuous investment has kept the waterway competitive against alternative routes and against rival passages such as the Panama Canal.

Widening works from 1876 onward

Improvement began almost as soon as the canal opened. From 1876 onward a programme of dredging and widening enlarged the original dimensions of 160 kilometres in length, 60 metres in width and 12 metres in depth, so that larger and more heavily laden vessels could pass. Each round of works increased both the depth and the width of the channel, steadily raising the tonnage the canal could carry.

Modern projects: building a parallel channel

The most ambitious modern upgrade added a duplicate, parallel channel along part of the route, allowing convoys of ships to travel in both directions at once instead of waiting in the Great Bitter Lake. This new lane sharply reduced transit and waiting times, increasing the number of vessels the Suez Canal can handle each day and reinforcing its position on the Europe–Asia trade route.

The East Container Terminal

Development around Port Said has extended the canal's role beyond simple transit. The East Container Terminal, served by a side channel branching from the main waterway, turned the northern entrance into a major hub for transhipping cargo, so that goods could be loaded and redistributed without leaving the canal zone. Such facilities add value to the traffic passing through and diversify the revenue of the Suez Canal Authority.

Canal maintenance and environmental factors

Keeping the Suez Canal open requires constant dredging to counter silting and the shifting of desert sand, along with careful management of the surrounding environment. The junction of the Red Sea and the Mediterranean has also allowed marine species to migrate between the two seas, an ecological side-effect that engineers and scientists continue to monitor as the channel is enlarged.

Alternative routes across Egypt and Sinai

Besides the waterway itself, Egypt developed overland links to move goods and people across the isthmus. Railroad transshipping lines and, later, road tunnels and bridges beneath and over the canal connected the mainland with the Sinai Peninsula, providing an alternative to sea passage for cargo and troops. These land routes complement the canal, tying the two banks together and supporting the towns that grew up around Suez Port and Port Said.

The story of the Suez Canal remains one of the great chapters in the history of world trade, linking the ambitions of ancient pharaohs to the shipping lanes that still carry a large share of global commerce today.