As yet iron had not been employed on the present scale in ship construction. Both in 1857 and 1858 larger ships than had yet been known, the 'Niagara' first, the 'Orlando,' the 'Mersey,' afterwards, were built, all, however, of wood. Long after steam was partially employed, sails were retained. Even during our Black Sea and Baltic operations in Crimean days, screw and paddle were still combined with canvas. Such success as our fleet secured at this time was not promoted by the excellence of our naval organization which according to Captain Eardley Wilmot, was not much better than our military.[73] The first lesson as to the new mode of motion by sea learnt from the naval operations in Crimean waters was recognized by Kinglake and is confirmed by Captain Eardley Wilmot as being that 'in regions where land and sea much intertwine, steam is stronger for attack than for defence.'
The iron ships now almost as essential to the idea of a navy as steam itself, had been tried for different purposes long before our Admiralty adopted them; the material had been used, first in 1812 for canal barges, secondly, a little later, for the mercantile marine. Iron was not employed for our navy till the last days of William IV. The tragic fate of the first iron ship, the 'Birkenhead,' may well have prejudiced both the Department and the public against the new material.
The iron-plated ship of the modern type appears to have been a French idea, first tried by Colonel Paixhaus in 1825. The floating batteries employed in the Crimean War in which Napoleon III. was specially interested, marked a fresh advance in this direction. Nor does it seem easy to overrate the value of the lessons in scientific seamanship derived from the French and English operations on the Black Sea, 1854-5. The result was the invitation by the Admiralty of designs from all quarters, the ordering of the 'Warrior,' designed by Mr Scott Russell, in 1859, completed in 1861.[74] This vessel was equipped with a battery extending her whole length. Before the fifties were out, the naval and the national mind had been familiarized with the idea of mastless ships, long repulsive to the national sense of the picturesque at sea. The 'Warrior,' however, was furnished with sails in addition to steam and marked an epoch in the development not only of the English navy, but of the navies of the world, as the first absolutely complete iron ship ever built.