Framed Photo. H.M. Iron steam-frigate "Trident", 1845.

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14×12 inch (363×312 mm) ready to hang frame with high quality print. H.M. Iron steam-frigate “Trident”, 1845. The Trident is the first Iron Steam-Ship-of-War ordered by her Majesty’s Admiralty to be built. She was launched from Messrs. Ditchburn and Mare’s extensive building-yard, at Blackwall [on the River Thames in London]…The iron skin is 3/4 inch thick at the keel, diminishing upwards at the gunwale to 1/2 inch. The skin contains 1400 plates of iron, which are rivetted to each other, and to the ribs and keel, by 200,000 rivets. Each rivet

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