The collapsible water vessel is deployed as either a kayak or a canoe. The collapsible water vessel is portable and is stored as or in a backpack. The collapsible water vessel deploys with a bottom configuration selected from the group consisting of a normal bottom, a deep V bottom, and a flat bottom. The collapsible water vessel comprises an outer frame, one or more ribs, one or more seats, an outer shell, a flooring bladder, and a plurality of elastic cords. The outer shell provides a barrier between the interior of the collapsible water vessel and the water within which the collapsible water vessel is placed. The outer frame, the one or more ribs, the one or more seats, the flooring bladder, and the plurality of elastic cords form the physical structure upon which the outer shell attaches.

An inflatable boat for use with a motor having a jet intake or propeller, including: an inflatable body having a stern; a drop stitch inflatable bottom forming part of the inflatable body, the drop stitch inflatable bottom including one or more sections of high pressure drop stitch material and having a top side and bottom side; a cutout in the drop stitch inflatable bottom near the stern; and a cover covering the cutout and sealed to the top side of the drop stitch inflatable bottom; wherein the cutout and cover form a channel that facilitates a flow of water to the jet intake or propeller of the motor.

Disclosed is a method for stiffening plates for ship walls. At least one elongate profile member of laminated composite material and having a transverse cross-section of a predetermined shape over the length thereof is pre-manufactured, the profile member being rigid. Then, a panel including laminated composite materials at least on the surface of at least one of the two main surfaces thereof is used, and the at least one pre-manufactured profile member is assembled and attached together onto one of the main surfaces of the panel. The main surface of the panel receives the profile member including laminated composite material. The profile member has a transverse cross-section with three continuous portions: two flanges having substantially straight cross-sections and interconnected by a web. The flanges and the web in transverse cross-section are supported by separate planes, the plane of the web intersecting the two planes, supporting the flanges, at 90.

A portable marine anchoring device maximizes holding capacity while anchored into the ground. The device is fabricated from lightweight aluminum.

In a method for producing a hull wall of a fiber composite sandwich component, shaped bodies of extruded polystyrene hard foam are enveloped with an envelope of fiber composite material with fibers oriented at least bidirectionally. The enveloped shaped bodies have a shape for forming a hull wall and are placed next to each other in a vacuum injection structure on a lower cover layer of fiber composite material. An upper cover layer of fiber composite material is placed on top of the enveloped shaped bodies and the vacuum injection structure is sealed. Matrix material is introduced and distributed in the vacuum injection structure until the fiber composite material of the envelopes and of the upper and lower cover layers is impregnated completely with the matrix material. The matrix material is cured and the fiber composite sandwich component of the hull wall is removed from the vacuum injection structure.

Embodiments of the present invention provide systems and methods for using nonwoven materials for evacuation slides, life rafts, life vests, and other life-saving inflatable devices. The nonwoven materials have a substrate layer with continuous filaments formed in various directions.

A method is provided for manufacturing a rotor body of a Magnus-type rotor. The method includes providing a plurality of arcuate panels, wherein each of the panels has an arc-length less than a predetermined circumference of the rotor body. The method further includes positioning at least three such arcuate panels in mutual edge-wise abutment to form circumferentially a hollow cylindrical loop, wherein longitudinal edges of adjacent panels are mutually attached to each other. The method further optionally includes co-axially stacking one above another at least two loops of substantially similar diameter. The method further includes connecting edges of adjacent loops to define the rotor body of a predetermined height.

Described herein are structural waterproof films comprising a composite of at least one wool sheet, the wool sheet being at least partially impregnated with a hardening resin that, when hardened, is rigid or semi-rigid and is substantially water impermeable. The films described introduce organic materials into, among many applications, water craft design plus the films described offer a useful alternative to traditional non-organic fibreglass construction.

A portable marine anchoring device maximizes holding capacity while anchored into the ground. The device is fabricated from lightweight aluminum.

Renewable Energy (RE) sources are already one of the cheapest sources of energy available today but are variable and infirm, and the open ocean offers many opportunities to generate energy by using various disparate sources and methods on a floating station. These energy stations converting renewable energy including solar, ocean currents, wind, waves and batteries and hydrogen to store energy and provide sufficient stable power and energy as required and available most of the hours. The invention claimed here is a system to capture energy from a combination of wind, solar and ocean currents, along with batteries for storage and later use and hydrogen creation, storage and use for generation. In addition, apparatus is described that provide mechanical stability and resilience in deep open seas and reliably survive storms and hurricanes. Also described is a method for overcoming intermittency of ensuring continuous and stable energy export from the station, and finally methods to continually operate RE station in the open seas even during storms and hurricanes and survive the high winds and waves.