A support for inclusion internally within a plastic boat body to structurally reinforce the plastic boat body is provided. The support may comprise a support plate and a support brace. Also provided is a reinforced component for a plastic boat body, comprising an interior support; and one or more plastic exterior walls. Plastic boats comprising supports and reinforced components are also provided. Further provided are associated kits, systems, and methods.

Apparatus and associated methods relate to using an additive (material deposition) process to incrementally form a closed-cell lattice structure formed as a unitary body in the shape of a marine hull cavity, the unit cells of the closed-cell lattice structure are substantially hollow. In an illustrative example, a method may include (a) forming a closed-cell lattice structure through additive manufacture, the hull cavity material may be bonded to an upper manufactured liner and a lower manufactured liner through lamination or mechanical connection. Unit cells of the closed-cell lattice structure may include hollow voids filled with gases. Providing the additive manufactured closed-cell lattice structure with a unitary body and hollow voids to trap gases may further advantageously promote the buoyancy and reduce the degeneration of a marine hull.

A hybrid floating offshore wind turbine energy conversion system using light weight solid syntactic buoyancy material columns for offshore application. Each wind turbine includes a deep draft Spar hull combined with several semi-submersible syntactic columns for extra buoyancy and stabilization.

A floating carrier device is configured to support at least one solar element floating on a water body, in particular an inland water body, with at least one floating body and with a carrier structure which is coupled with the floating body and is configured to transfer a support force of the at least one solar element to the at least one floating body.

Marine vessels, including combatant (naval) vessels are produced inexpensively without requiring the use of as many skilled personnel as is conventional. The vessel produced has a high strength metal truss structure (both above and below the water line) capable of carrying major hull loads. A number of curved or doubly curved composite (e. g. GRP) panels produced by vacuum assisted resin transfer molding are fastened by bolts, marine adhesives, and/or rivets to the below water line portions of the truss structure where necessary to handle slamming loads and to reduce water resistance and wake. Substantially flat composite pultruded panels are fastened to the truss structure both above the water line, and below the water line where the resistance to slamming loads and reduction of water resistance and wake are not critical. Necessary equipment is installed within the open truss volume before the above-water-line panels are fully installed.

Marine vessels, including combatant (naval) vessels are produced inexpensively without requiring the use of as many skilled personnel as is conventional. The vessel produced has a high strength metal truss structure (both above and below the water line) capable of carrying major hull loads. A number of curved or doubly curved composite (e. g. GRP) panels produced by vacuum assisted resin transfer molding are fastened by bolts, marine adhesives, and/or rivets to the below water line portions of the truss structure where necessary to handle slamming loads and to reduce water resistance and wake. Substantially flat composite pultruded panels are fastened to the truss structure both above the water line, and below the water line where the resistance to slamming loads and reduction of water resistance and wake are not critical. Necessary equipment is installed within the open truss volume before the above-water-line panels are fully installed.

Apparatus and associated methods relate to using an additive (material deposition) process to incrementally form a closed-cell lattice structure formed as a unitary body in the shape of a marine hull cavity, the unit cells of the closed-cell lattice structure are substantially hollow. In an illustrative example, a method may include (a) forming a closed-cell lattice structure through additive manufacture, the hull cavity material may be bonded to an upper manufactured liner and a lower manufactured liner through lamination or mechanical connection. Unit cells of the closed-cell lattice structure may include hollow voids filled with gases. Providing the additive manufactured closed-cell lattice structure with a unitary body and hollow voids to trap gases may further advantageously promote the buoyancy and reduce the degeneration of a marine hull.

A method for manufacturing a laminar construction panel comprising a first (1) and a second (2) metal plate and an acoustic insulation layer (3) interposed there between. The first and second metal plates are connected to each other by a number of locally welded joints distributed over the laminar construction panel and extended through an area of an acoustic isolation layer. The welded joints are formed by stud welding, one of the metal plates is provided with welding openings (4), and a welding pin (7) is pushed through the isolation layer against the other metal plate. The welded joints may be formed by spot welding, both metal plates are brought into electrical connection with the spot welding equipment, and the metal plates locally are pressed toward each other in such a way that mutual electrical contact is made.

A boat comprises a deck supported by one or more deck floats, and a paddle wheel cockpit comprising a seat proximal to a pedal-driven paddle wheel adapted to engage water and propel the boat; wherein the deck and the paddle wheel cockpit are joined by at least one cockpit hinge that allows the paddle wheel cockpit to fold over the deck, in some embodiments.

A method of making a tubular casing for an underwater device, wherein a metal ring made of aluminum is subjected to an anodizing process that produces an insulating layer of aluminum oxide that covers it externally. The ring is coupled with a mold that defines a cylindrical surface on which the following are deposited: first layers of carbon fiber to produce a first cylindrically-shaped tubular element in carbon fiber provided with an end portion that engages a first groove of the ring; a layer of syntactic material configured to transfer radial forces; and second layers of carbon fiber to produce a second cylindrically-shaped tubular element in carbon fiber that covers the syntactic layer and is provided with an end portion that engages a first groove of the ring.