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The Ulstein X-Bow (or just X-BOW) is an inverted ship's bow designed by Ulstein Group to improve handling in rough seas, and to lower fuel consumption by causing less hydrodynamic drag. [1] It is shaped somewhat like a submarine's bow. [2] Bourbon Orca anchor tug, shown in 2012, was the first ship built with an Ulstein X-Bow in 2006.
Starting in 1911, the Ottoman Empire—Greece's traditional naval rival—set about modernizing its fleet. That year, the Ottomans ordered the dreadnought Reşadiye.The expansion of Ottoman naval power threatened Greek control of the Aegean; to counter the Ottoman dreadnought, Greece decided to order a dreadnought of its own, Salamis, from a German shipyard. [2]
Bow shapes vary according to the speed of the boat, the seas or waterways being navigated, and the vessel's function. Where sea conditions are likely to promote pitching, it is useful if the bow provides reserve buoyancy; a flared bow (a raked stem with flared topsides) is ideal to reduce the amount of water shipped over the bow. [3]
Georgios Averof, acquired in 1909, was the first major component of Greece's rearmament program. Following the Greco-Turkish War of 1897, during which the Ottoman fleet had proved incapable of challenging Greece's navy for control of the Aegean Sea, the Ottomans began a naval expansion program, initially rebuilding several old ironclad warships into more modern vessels. [1]
The stern and bow were rebuilt, increasing the length of the ship to 186.9 m (613 ft), and the displacement grew to 28,882 t (28,426 long tons). Her old machinery was replaced with more efficient equipment and her twenty boilers were replaced with eight oil-fired models; the new power plant was rated at 75,000 shp (56,000 kW) and speed ...
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The Royal Navy's revolutionary HMS Dreadnought, launched in 1906, gave its name to the type USS Texas, the only dreadnought still in existence, [1] was launched in 1912 and is now a museum ship. The dreadnought was the predominant type of battleship in the early 20th century.