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Initially a linkspan was a ramp that was attached to the pier at one end and was suspended above the water at the other. The height above the water was controlled either by hydraulic rams or cables, these types of linkspans were less well designed for the various conditions of the tide, wave and current and so were superseded by underwater tank linkspans that through compressed air can be ...
An old and simple slipway for smaller boats, Ystad, Sweden. In its simplest form, a slipway is a plain ramp, typically made of concrete, steel, stone or even wood. The height of the tide can limit the usability of a slip: unless the ramp continues well below the low water level it may not be usable at low tide. Normally there is a flat paved ...
Some modern patrol vessels are equipped with a stern launching ramp, or simply launching ramp, for deploying smaller rescue or pursuit boats without requiring the parent ship to first come to a halt. [ 1 ] [ 2 ] [ 3 ] Typically the smaller craft are powered by water-jets, and can drive themselves up the ramp by their own power.
These vessels have bow ramps for onload/offload and can be linked bow to stern gate to create a temporary pier-like structure. Its welded steel hull provides high durability with deck loads of 3,900 kg/m 2 (800 pounds per square foot). Arrangement of machinery and equipment has taken into account built-in redundancy in the event of battle damage.
Starting from the keel, these are the floor (which crosses the keel and joins the frame to the keel), the first futtock, the second futtock, the top timber, and the rail stanchion. [1] In steel shipbuilding, the entire frame can be formed in one piece by rivetting or welding sections; in this case the floor remains a separate piece, joining the ...
Wood is the traditional boat building material used for hull and spar construction. It is buoyant, widely available and easily worked. It is a popular material for small boats (of e.g. 6-metre (20 ft) length; such as dinghies and sailboats).
The San Antonio class is a class of amphibious transport docks, also called a "landing platform, dock" (LPD), used by the United States Navy.These warships replace the Austin-class LPDs (including Cleveland and Trenton sub-classes), as well as the Newport-class tank landing ships, the Anchorage-class dock landing ships, and the Charleston-class amphibious cargo ships that have already been ...
Stanchions and velvet rope. A stanchion (/ ˈ s t æ n tʃ ən /) is a sturdy upright fixture that provides support for some other object. [1] It can be a permanent fixture. In nautical terms, the stanchion is the thick and high iron that with others equal or similar is placed vertically on the gunwale, stern and tops.
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