The latest engineering and technology from the 1930s: A floating dock is a hollow iron structure open at each end. Sinking to the required depth using water filled chambers, the ship enters the dock and when secure, the chambers are filled with air, emptying the water and rising to allow work on the ship to begin.

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Size: 4909px × 2756px
Location: United Kingdom
Photo credit: © De Luan / Alamy / Afripics
License: Licensed
Model Released: No

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