The Panama Canal Trivia
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50 free The Panama Canal trivia questions with answers — history quiz, new questions added Aug 2026.
Panama Canal trivia runs from Balboa's crossing of 1513 to the Neopanamax locks of 2016. The quiz begins with the basics: how long the canal is, where it goes, when it opened, which lake it climbs to and how wide the original locks are. Then the French disaster: de Lesseps fresh from Suez, the sea-level dream, 22,000 dead, bankruptcy and a jail sentence. The American takeover follows: the Nicaragua debate, the $40 million deal, Panama's independence from Colombia, Bunau-Varilla's treaty and Roosevelt's 'I took the Isthmus'. The construction section covers Gorgas and the mosquitoes, Wallace, Stevens and Goethals, the Barbadian labourers, Bucyrus steam shovels, the Culebra Cut and its landslides, the Chagres dam and Gatun Lake, the Cristobal and the Ancon. Later questions turn to operations and politics: Panamax and the Bridge of the Americas, Miraflores, the Saratoga's lamp posts, Halliburton's 36-cent swim, the Norwegian Pearl's record toll, 200 million litres per transit, the Canal Zone and its capital, Torrijos and Carter, noon on 31 December 1999, the expansion, the Nicaraguan rival that vanished and the treaties of 1846 and 1850. Every answer was checked against Wikipedia's articles on the Panama Canal, Gatun Lake, the Culebra Cut and the Canal Zone, with the supporting sentence attached to each question. Easy questions suit anyone; the expert tier reaches Baron de Lépinay and the San Juan Prospector.
30 of 50 questions with answers and explanations. Play the quiz
Q 01The Panama Canal spares ships sailing between the Atlantic and Pacific a voyage around which cape?
Cape Horn
Cape Horn, at the tip of South America. Cutting through Panama instead shortens a sea voyage from New York to San Francisco by nearly 8,000 miles.
Q 02Which event scrapped the grand celebrations planned for the Panama Canal's opening?
World War I
World War I had just broken out in Europe when the canal opened on 15 August 1914, so the planned festivities were scrapped and the first official transit was a modest local affair.
Q 03What moves the lake water that fills the Panama Canal's locks?
Gravity
Gravity alone does the work: water drains downhill from Gatun Lake, 26 metres above the sea, through tunnels in the lock walls. No pumps are used anywhere on the canal.
Q 04Which US presidential nominee was born in the Panama Canal Zone, where his father was a naval officer?
John McCain
John McCain was born in 1936 at Coco Solo Naval Air Station. When he ran for president in 2008, the Senate passed a resolution recognising him as a natural-born citizen, as the Constitution requires.
Q 05Which Frenchman led the failed 1880s attempt to dig a canal across Panama?
Ferdinand de Lesseps
Ferdinand de Lesseps was a diplomat, not an engineer, and he insisted on digging at sea level, as he had at Suez. The Americans succeeded with the locks and artificial lake he had waved away.
Q 06Which disease, along with malaria, was the great killer of workers on the French canal project in Panama?
Yellow fever
Yellow fever spared no rank: Jules Dingler, the French director general, brought his family to Panama and lost his daughter, his son and then his wife to it.
Q 07Which Frenchman, hired to build locks for the Panama Canal, was convicted in the scandal over the company's collapse?
Gustave Eiffel
Gustave Eiffel was fined and sentenced to two years in prison in 1893, though the verdict was annulled on appeal. He retired from engineering and gave his last decades to weather and aerodynamics research.
Q 08What forced the Panama Canal to cut the number of ships allowed through each day in 2023 and 2024?
A severe drought
A severe drought left too little lake water to work the locks at full pace, so crossings were rationed and some gas tankers bound for Asia detoured through Suez or around Africa instead.
Q 09Which country did a US commission first recommend over Panama as the canal route in 1901?
Nicaragua
Nicaragua was the favourite until a lobbyist for Panama mailed every US senator a Nicaraguan stamp showing a volcano in full eruption, and the Senate then voted for Panama.
Q 10From which country did Panama declare independence on 3 November 1903, with US warships blocking a response?
Colombia
Colombia's senate had rejected the US canal treaty earlier that year. When Panama rose, American warships blocked the sea lanes and a Colombian force sent overland was beaten back by the Darién jungle.
Q 11In which New York hotel did Frenchman Philippe Bunau-Varilla promise to bankroll Panama's 1903 revolt in return for becoming its envoy?
The Waldorf-Astoria
The Waldorf-Astoria suite is where he offered the rebels his own money. As Panama's envoy he then signed the Canal Zone treaty himself, and no Panamanian's name is on it.
Q 12Which US president championed the Panama route and famously said he 'took the Isthmus'?
Theodore Roosevelt
Theodore Roosevelt's full boast ran: 'I took the Isthmus, started the canal and then left Congress not to debate the canal, but to debate me.' In 1906 he sailed to Panama to see the digging for himself.
Q 13The deadly Canal Zone riots of 1964 began with a dispute over what?
Q 21Which machines, mostly built by Bucyrus in Wisconsin, did the Panama Canal's heavy digging?
Steam shovels
Steam shovels on rails loaded the endless dirt trains. In May 1913 two of them, digging from opposite directions, finally met on the floor of the deepest cut.
Q 22Although the Pacific lies west of the Atlantic, ships crossing the Panama Canal towards the Pacific sail in which general direction?
Southeast
Southeast: because of the way the isthmus curves, the canal runs from northwest to southeast, and its Pacific entrance lies a little east of its Atlantic one.
Q 23Which pair of leaders signed the 1977 treaties that provided for handing the canal to Panama?
A flag
A flag: Panamanian students marched into the Zone to raise their country's flag beside the American one, and the riot that followed briefly broke off diplomatic relations and pushed both sides towards a new treaty.
Q 14Army doctor William Gorgas made the Panama Canal possible by waging a relentless campaign against which creatures?
Mosquitoes
Mosquitoes carry the fevers that had beaten the French. Gorgas's crews fumigated houses, screened windows and oiled standing water, though his own commission thought it a waste of money.
Q 15During which war did the battleship Oregon's two-month dash from San Francisco to Florida show Americans they needed a canal?
The Spanish–American War
The Spanish–American War of 1898 caught the Oregon on the wrong coast. She reached the fleet off Cuba just in time for the Battle of Santiago, and the scare gave the canal campaign new life.
Q 16Which US Army engineer took over the Panama Canal works in 1907 and drove them to completion in 1914?
George Washington Goethals
George Washington Goethals got the job because two civilian chief engineers had quit within three years: the president wanted an Army man who had to stay until ordered home.
Q 17Which Hollywood star, a well-known conservative, publicly endorsed the 1970s treaties handing the Panama Canal to Panama?
John Wayne
John Wayne was a friend of Panama's leader and broke with fellow conservatives such as Ronald Reagan, who had campaigned against giving up the canal.
Q 18Which Caribbean island supplied by far the most contract labourers for the American construction of the Panama Canal?
Barbados
Barbados sent the great majority of the West Indian contract workers, and West Indians made up most of the roughly 5,600 workers who died during the American years.
Q 19Which artificial valley carries the Panama Canal through the Continental Divide, the hardest digging of the whole project?
Culebra Cut
Culebra Cut bore the name Gaillard Cut for most of the 20th century, after the Army major who led the digging and died months before the canal opened.
Q 20Which US president pressed a button in Washington in October 1913 to blow up the last dike across the Panama Canal?
Woodrow Wilson
Woodrow Wilson's signal ran down the telegraph wires from Washington to Panama, where it set off the charge that breached the Gamboa dike and let the lake water flood the last dry stretch.
Jimmy Carter and Omar Torrijos
Jimmy Carter and Omar Torrijos signed in September 1977. A year earlier, as a candidate, Carter had vowed not to surrender control of the Canal Zone; the Senate then approved each treaty with a single vote to spare.
Q 24Panama took full control of the canal just hours before which milestone?
The year 2000
The year 2000 was hours away: the treaties signed in 1977 had fixed 31 December 1999, 22 years ahead, as the day US control would end.
Q 25At whose request were the Panama Canal's locks built wider than first designed?
The US Navy
The US Navy wanted room for the battleships on its drawing boards, and for the next three decades American warships were designed to squeeze through. The size limit became known as Panamax.
Q 26The Panama Canal's 2016 expansion let far bigger 'Neopanamax' ships cross by adding what?
A third lane of locks
A third lane of locks, Agua Clara on the Atlantic side and Cocolí on the Pacific, opened in June 2016 after nine years of work and doubled the canal's capacity.
Q 27Which locks on the Panama Canal lower ships the final two steps to the Pacific?
Miraflores
Miraflores has the tallest gates of the canal's original locks, because the Pacific's big tides make the final step down vary by several metres.
Q 28For doing what did travel writer Richard Halliburton pay a Panama Canal toll of just 36 cents in 1928?
Swimming it
Swimming it. He was charged the way ships were, by tonnage, and no smaller toll has been paid before or since.
Q 29Why were the Panama Canal's giant steel lock gates built hollow?
To make them float
To make them float: each leaf is as buoyant as a ship's hull, which takes the weight off its hinges, so a gate up to 82 feet high swings with little effort.
Q 30What was completed across Panama in 1855, linking the two oceans almost 60 years before the canal?
A railroad
A railroad, running ocean to ocean 14 years before the first line across the United States. It cost thousands of labourers their lives, and half a century later it hauled away the canal's dirt.