Interactive mechanism · source-grounded teaching model
Lift a ship through a lock
Watch the gates close before the chamber rises. Scrub back and forth to see why the upper gates open only after the water levels match.
Chamber. The vessel floats with the rising chamber water. The water is admitted through passages omitted in this cutaway.
A chamber between two water levels
A water staircase
The canal opened in 1914 after earlier French efforts and a decade of U.S.-led construction. Locks lift ships to Gatun Lake, about 26 metres above sea level, before lowering them toward the other ocean. Gravity-fed water transfers change the level inside each chamber; ships float upward with the water.
Beyond an engineering triumph
The 1903 treaty gave the United States extensive authority in the Canal Zone. Reading the project only as technological progress leaves out Panamanian sovereignty and the people whose labour made the crossing possible. The political history and the hydraulic mechanism answer different questions and belong together.
Every part, in words
Chamber. The vessel floats with the rising chamber water. The water is admitted through passages omitted in this cutaway.
Gates. The gate sequence keeps different water levels separated until the chamber is ready.
Vessel. The vessel rises by buoyancy as the water level increases; it is not lifted by a mechanical platform.
