Maritime night signalling. Balloon and lights being used by ships engaging in night-time signalling at Heligoland. This archipelago in the North Sea n

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Maritime night signalling. Balloon and lights being used by ships engaging in night-time signalling at Heligoland. This archipelago in the North Sea near Germany was held by the British until it was ceded to Germany in 1890. Artwork from the ninth volume (first period of 1892) of the French popular science weekly 'La Science Illustree'.

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Size: 3999px × 5291px
Photo credit: © Science Photo Library / Alamy / Afripics
License: Licensed
Model Released: No

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