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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]
In archery, the shape of the bow is usually taken to be the view from the side. It is the product of the complex relationship of material stresses, designed by a bowyer. This shape, viewing the limbs, is designed to take into account the construction materials, the performance required, and the intended use of the bow.
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.
Comparison between an axe bow (442) and a conventional bow (441) 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.
Hull design can affect the aesthetics of a sailing yacht. The shape of the bow and stern are significant factors, as is a yacht's sheer line (the curvature of its deck). Bow shapes include the bow (convex curve), destroyer or vertical (near vertical), and knuckle or raked (angled straight to the water line).
A punt can be punted with equal facility in either direction, so it is not obvious to the novice which end is the bow and which the stern; however, one end of the boat is strengthened with a short deck, usually called a "counter" or a "till" (terms from cabinet making), that extends some six feet (1.8 m) from that end. The Thames punt-building ...
A sharp bow on a conventional hull form would produce waves and low drag like a bulbous bow, but waves coming from the side would strike it harder. The blunt bulbous bow also produces higher pressure in a large region in front, making the bow wave start earlier. [6] The addition of a bulb to a ship's hull increases its overall wetted area.
The cable backed bow, showing the bow (a) bearing the tensioned cable (b) along the face of it, attached by bindings (c). Finally, the bow strung with the main string (d). Several Inuit cable-backed bows. The shapes of the top four are an interesting mix of deflex, reflex, and decurve. A cable-backed bow is a bow reinforced with a cable on the ...