摘要:
A marine buoyancy unit which fits at least partly around a marine object such as a riser with auxiliary conduits is composed of syntactic foam with an external layer or skin of harder polymeric composite. To reinforce the unit slots or channels are cut in the exterior of the unit or borings are created which extend within the unit and reinforcement in the form of webs or strips are placed into the slots or channels or borings. The reinforcement is embedded into the slots, channels or borings by introducing a curable resins.
摘要:
The invention is a monohull fast ship. The ship includes a hull producing a high pressure area at a bottom portion of a stern which rises from a point of maximum depth forward of a longitudinal center of the hull to a point of minimum draft at a transom which produces hydrodynamic lifting of the stern at a threshold speed above a length Froude Number of 0.40; a weatherdeck closing a top of the hull, at least one cargo carrying deck disposed below the weatherdeck and at least one lower deck disposed below the at least one cargo carrying deck; a plurality of longitudinally extending rail pairs extending along at least one cargo carrying deck from the stern toward a bow of the hull, each rail pair for guiding at least one trolley with each trolley conveying cargo from an exterior of the hull through an opening in the stern along one of the longitudinally extending rail pairs toward the bow to a position where the cargo is lowered from being conveyed by the at least one trolley into contact with the at least one cargo carrying deck; at least one waterjet disposed within the hull with each waterjet having an inlet in a bottom portion of the stern which produces high pressure during motion of the ship; at least one power unit disposed on one of the at least one lower deck coupled to the at least one waterjet for powering the at least one waterjet.
摘要:
A linked vehicle includes several units which are arranged one after another in the longitudinal direction of the vehicle and are connected by bending links with one another so that the individual units can pivot relative to one another. The individual units can include two frame parts which can be built of one or more floating members and can be connected with one another by cross-connecting members. Rigidly constructed baskets can be inserted into open regions provided in the individual units. According to a further development of the invention, the units have sliding surfaces provided on their underside and possibly also on their side walls, which sliding surfaces can support the links on a fixed base and are made of a slidable material which has, on the material of the fixed base, a friction coefficient which is as low as possible. The base can be formed by a channel in which the vehicle is driven and guided by potential energy. The linked vehicles can be utilized in amusement parks, where they can be guided in water-carrying channels or in dry channels.
摘要:
An apparatus for varying the dimensions of a hull of a vessel comprising an arcuate truss assembly having a plurality of members pivotally joined. The arcuate truss assembly is operatively arranged to form a portion of the hull. The assembly is operatively arranged to extend and retract to vary the dimensions of the hull when the plurality of members are pivoted with respect to one another. The members of the arcuate truss assembly pivot in a plane substantially coplanar with the portion of the vessel hull.