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On New Year's Day 1880 the steamship Rotomahana struck difficult on a sunken rock at the mouth of Fitzroy Harbour, New Zealand. She managed to back off and make her way safely to Auckland, leaking only by way of a handful of rivet holes. There the dockyard workers located that for twenty feet of her starboard bilge the frames had been compelled back, the bulkhead bulged, and the plate was wrinkled. But not a crack was visible. The most ruined plate was taken out, flattened, and changed, and the repairs had been finished in 72 hours.

If she had been manufactured of iron, the accident would have brought on this sort of a tear that she would have filled with h2o in a handful of minutes and sunk. But she was produced of metal. The Rotomahana was the 1st steel ocean-heading steamer to undergo a significant incident, and by her dangerous knowledge the immense superiority of metal about iron was demonstrated. From that time on, all ships were developed of metal.

So how ended up metal ships built in Victorian occasions? Following the naval architect had created the ship, and painstakingly created small-scale construction drawings, the drawings were taken to the mould-loft, a enormous room over a hundred yards lengthy, exactly where the ideas had been drawn to total size on the floor. Problems unnoticeable on a tiny scale therefore became visible and correctable. Following, full dimension wood 'scrive boards', or styles, were created for the shipwrights.

They worked in the device-shop, a huge smithy total of metal-operating machinery - and the clangour of metal working and the racket of riveting. The ship's ribs had been made on the bending slab, a pavement of iron dotted with peg-holes. Here was laid the pattern from the scrive board, and pegs have been set in holes outlining the pattern. From the furnace came the lengthy red bar of steel. It was thrown on the slab, and with large 3-pronged forks it was pressed by the shipwrights against the pegs to type the proper curve.

Holes ended up produced in the ribs by enormous hydraulic punches so that the steel plates, formed in enormous rolling mills, could be riveted to them. Then the forming of the standard form of the ship commenced. The keel was set on wooden blocks, and from it the stem, stern and ribs had been set up, so that at this stage the ship looked like a huge metal basket. Then the plates ended up riveted in location, and caulked, not with oakum, as in the days of sail, but by the sharp edges of the plates staying turned in with a chisel so that the total hull was watertight and smooth. The metal decks have been caulked also, and painted, just before getting laid with teak planks. When the shell was concluded, then the new ship was launched.

But this was only the initial stage. Then adopted the smiths, joiners, carpenters, joiners, cabinet-makers and painters to fit her out, and most importantly of all, the engineers who created and fitted her mighty steam engines. It took as numerous as 1200 guys, an industrial army, to construct a Victorian metal steamship.