Field-tube boiler
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A Field-tube boiler is a form of water-tube boiler where the water tubes are single-ended. The tubes are closed at one end, and they contain a concentric inner tube. Flow is thus separated into the co
Field tube, sectioned
De Poray boiler, sectioned
Pre-dreadnought battleship
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Pre-dreadnought battleships were sea-going battleships built from the mid- to late- 1880s to the early 1900s. Their designs were conceived before the appearance of HMS Dreadnought in 1906 and their cl
Field-tube boiler
…Above the boiler and outside the flue gas enclosure, a steam-and-water drum links these headers together. It was notably used in some of the last pre-dreadnought battleships (circa 1900) of the French, Italian, Russian and British navies. The USS Georgia (BB-15) built by the Bath Iron Works in Maine and her launching in…
HMS Royal Sovereign (1891) was the first pre-dreadnought battleship of the Royal Navy.
HMS Ocean was typical of pre-dreadnought battleships
HMS Dreadnought shows the low freeboard typical for early ironclad turret-ships. This ship, launched in 1875, should not be confused with her famous successor, launched in 1906, marking the end of the pre-dreadnought era.
The heavy guns and forward barbette of Mikasa's main battery