The image depicts a diagram of a lock system, specifically a Gatun Lock in the context of the Panama Canal. The lock is located on the Atlantic Ocean side and is connected to the Gatun Lake. The lock consists of two main sections: the upper section, which is the lock chamber, and the lower section, which is the gate. The lock chamber is filled with water, while the gate is open, allowing boats to enter or exit the lock. The lock is designed to accommodate ships of varying sizes, ensuring that they can pass through the canal without being damaged by the water pressure.