SMS Oldenburg was the first steel ship built in Germany, historical illustration, 1880, Germany Stock Photo - Alamy
Steel Ships and Iron Men. Shipbuilding in Belfast, 1894-1912: Harland and Wolff Historic Photograph Collection at the Ulster Folk and Transport Museum: Amazon.co.uk: McCaughan, Michael: 9780946872237: Books
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Dispatch vessel HMS Iris. Launched in 1877 (Photos Framed, Prints, Puzzles,...) #9766543
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Ironclad warship - Wikipedia
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Ironclad warship - Wikipedia
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Metal Hull
Wreck of the Gardar, the first steel ship of Iceland. The remote Westfjords (Vestfirdir) in northwest Iceland Stock Photo - Alamy