The history of ships

The first boat was a solved problem long before it was a written one. Dugout canoes, a single hollowed trunk, go back at least ten thousand years, and reed bundles lashed into hulls carried people along the Nile and across Mesopotamian marshes. By around 3000 BC Egyptian vessels had a mast and a single square sail, so that the wind could do the work the current would not.

The boldest early sailors left no monuments, only descendants. The Austronesian peoples pushed out into the open Pacific in double-hulled and outrigger canoes, navigating by star, swell and bird thousands of years before Europe left sight of land. Long before the ship was written about, it had already crossed the largest ocean on Earth.

Where wind was unreliable, empires reached for oars. The Phoenicians built the first great trading hulls; the Greeks answered war at sea with the trireme, three banks of rowers driving a bronze ram; Rome turned the whole Mediterranean into an inland highway of grain ships and galleys. These were fast, shallow, and utterly dependent on human power, brilliant in a calm sea, helpless in an ocean one.

The galley's limits set the next thousand years of the problem: to leave the sheltered sea, a ship needed to stop rowing and truly sail, and to be steered and built for weather no oar could survive.

No ship in history did more with less. The Norse longship was clinker-built, overlapping oak planks riveted edge to edge over a light internal frame, which made a hull that was strong, springy and astonishingly light. It flexed with the waves instead of fighting them, and a crew could carry it up a beach.

Its genius was draught. Drawing as little as a metre of water, a longship could cross the open North Atlantic and then row straight up a shallow river into the heart of a country with no harbour in sight. It was double-ended, symmetrical bow and stern, so it could reverse direction without turning, priceless among ice and rocks. A single square wool sail took it across oceans; banks of oars took it anywhere the wind would not.

We know these hulls intimately because the Norse buried their dead in them: the Gokstad and Oseberg ships, lifted almost whole from Norwegian clay, are ninth-century vessels you can stand beside today. And they were a family, not one design, the lean longship for raiding and the deeper, beamier knarr for cargo, the workhorse that carried settlers and livestock to Iceland, Greenland, and around the year 1000, to North America, five centuries before Columbus. Read the full page on Viking ships.

The medieval cog of the Hanseatic League looks clumsy beside a longship, a tubby, high-sided, single-masted box, but it carried far more cargo and far higher above the waves, and it introduced the single most important fitting in the history of the ship: the stern-mounted rudder.

Every vessel before it had been steered by an oar or board hung over one side. That works until a ship gets big, and then it does not. Hanging a rudder on the centreline of the sternpost gave one helmsman leverage over a hull of any size, and it is, in principle, the very same rudder swinging under a container ship today. Once a ship could be reliably steered at scale, it was free to grow, and it did.

With a rudder that scaled and rigs that could work across the wind, Europe went looking for the edges of the map. The Portuguese caravel was small, nimble and rigged with triangular lateen sails that let it claw to windward and beat back home against the very trade winds that carried it out. The larger carrack, Columbus's Santa María was one, was the ocean-going heavy hauler, three or four masts mixing square and lateen sail, tall castles fore and aft.

Out of the carrack came the galleon, longer and leaner, the backbone of ocean trade and war for two centuries. In eighty years ships went from hugging the Mediterranean to circling the entire planet, Magellan's expedition closed the loop in 1522.

For two and a half centuries the wooden full-rigged ship ruled. Navies fought in line with the ship of the line, three gun decks of broadside; the great chartered companies moved the wealth of continents in the East Indiaman. Sail reached its absolute peak not in size but in speed, with the clipper: long, sharp, and carrying a cloud of canvas, racing tea from China and wool from Australia. The Cutty Sark, preserved in Greenwich, is the last of them.

The clipper was magnificent and doomed. Even as it set its records, a dirtier, uglier technology was coming up astern that did not care which way the wind blew.

Three revolutions arrived within a lifetime and together ended the age of sail. Steam freed a ship from the wind. Iron, and then steel, freed a hull from the size limits of a tree. And the screw propeller beat the fragile paddle wheel, driving the ship from safely beneath the waterline.

One man's ships mark the turn. Brunel's Great Western (1838) proved a steamer could cross the Atlantic on schedule; his Great Britain (1843) put it all together, the first iron-hulled, screw-propelled ocean liner, and the direct ancestor of every ship on this site. From here, hulls are welded steel, power comes from a shaft, and sail becomes a memory.

Steel hulls and the steam turbine, Parsons stunned the Royal Navy with the little Turbinia in 1894, gave the great transatlantic liners the size and speed to turn an ocean crossing into a floating hotel. The era's ambition, and its overconfidence, is fixed forever in one hull: the Titanic of 1912, still the oldest ship we carry. Her tonnage, incidentally, was measured in the old gross register tons, which is why she is flagged separately from the modern gross tonnage figures on this site rather than mixed in dishonestly.

The diesel motor ship quietly displaced the reciprocating steam engine, burning less fuel and needing smaller crews. And the ship stopped being one general-purpose thing. It split into specialists, each shaped by a single cargo: the tanker built around liquid, the bulk carrier around ore and grain, the reefer around cold. The hull you built now depended entirely on what you meant to carry.

In April 1956 a converted tanker called Ideal X sailed from Newark to Houston carrying fifty-eight identical steel boxes, and a trucking man named Malcolm McLean quietly changed the shape of the planet's economy. The shipping container collapsed the cost of moving goods to almost nothing, because the box never had to be unpacked between the factory and the shop.

The whole system runs on one idea: standardisation. Ships, cranes, trucks and trains are all built around the TEU, the twenty-foot equivalent unit, and container ships are sorted into classes by how many of those boxes they carry. Globalisation, in a very real sense, floats.

Cheap steel and cheaper oil sent hulls up a growth curve that ran for forty years. Supertankers led the way to sheer size: the Seawise Giant remains the longest ship ever built, so long she could not turn in many of the world's straits. What kept the curve honest was not the sea but the land, the width of the Panama Canal locks, the depth of the great ports, the height of the bridges. Ships grew to fit the world's chokepoints, then paused at their edges.

The modern giants are the biggest moving machines ever made. On the container side, hulls like the Ever Given, Ever Ace and MSC Irina carry more than twenty thousand boxes each; on the passenger side, ships like Icon of the Seas and Queen Mary 2 are floating towns. They share the tricks that make size pay: a bulbous bow to flatten the wave they push, and every metre of length, beam and draught tuned to a specific canal, port or strait.

They have also mostly stopped getting longer. A ship is now sized to the infrastructure it must fit, not to what a shipyard could weld, which is why the record boards have gone quiet at the top. You can see exactly where the ceiling sits on the longest-ships board.

The next chapter is being written around a single word: carbon. Shipping moves most of the world's trade and burns a great deal of fuel doing it, and the pressure to change is now real. The early answers are a fascinating mix of the brand-new and the very old: methanol and ammonia engines, LNG, battery-hybrid harbour craft, and, remarkably, the return of the sail, as rigid wingsails and spinning rotor sails reappear on the decks of cargo ships to shave fuel off the wind. The longship's idea, four hundred million tonnes later.

Where it lands, nobody can honestly say yet. That is the fun of it, and the reason this page will need rewriting in a decade. If you want to feel why hull, draught and inertia mattered at every step above, take the wheel yourself.