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Axe bow
The axe bow is a wave-piercing type of a ship's bow, characterised by a vertical stem and a relatively long and narrow entry (front hull). The forefoot is deep and the freeboard relatively high, with little flare, so that the bow profile resembles an axe. The bow cuts through the water, and is less affected by passing through waves than a bow with more flare, making this bow type much less susceptible to pitching. Because the deep forefoot does not generally rise above the water level, it is less susceptible to slamming. The AXE bow moves the centre of lateral area forwards and the vessel may need considerably more rudder motion to hold its course, and this increases with the wave steepness.〔
A vertical prow is not unique; they were common in the early steam era. The innovation of the axe bow is combined with a lengthened bow of the ship. This concept was developed in the Netherlands by Lex Keuning of Delft University of Technology,〔(J.A.Keuning, J. Pinkster and F. van Walree: Further Investigation into the Hydrodynamic Performance of the AXE Bow Concept )〕 Damen Shipyards Group, Marin (Maritime Research Institute Netherlands), the Royal Netherlands Navy, Damen Schelde Naval Shipbuilding and the United States Coast Guard.
==See also==
*Inverted bow
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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