A method for manufacturing an integrated hull by using 3D structure type fiber clothes and 3D vacuum infusion process includes: sequentially stacking at least one first fiber cloth, at least one core material and at least one second fiber cloth on a mold; deploying structural materials on the second fiber cloth; stacking the third fiber clothes to cover the structure materials and a part of the second fiber cloth, whereby the first fiber cloth, the core material, the second fiber cloth and the third fiber clothes are formed to a lamination; determining a pipe arrangement of vacuum pipes and first and second resin pipes; deploying a vacuum bag on the lamination and covering the first and second resin pipes and the vacuum pipe; executing the 3D vacuum infusion process; curing the resin; and executing a mold release process to complete an integrated hull.

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

A method, system, and apparatus for collecting waste. In one embodiment, an autonomous plastic collecting robot (APCR) device for collecting waste may include a net structure that picks up micro plastic particles dispersed in water; a tube that transports the micro plastics collected by the net structure into a main internal container; an artificial tongue for collecting larger plastics, the artificial tongue comprised of a rolling staircase with fork-like structures in placed of the stairs; a plastic degrading medium contained in the main internal container; a no-joint tail structure which acts as the primary power source for the APCR, the no-joint tail structure housing dielectric elastomer materials and a rotation shaft located between at least two electric generators.

A method of manufacturing a boat hull comprising: forming a foam mold of a predetermined shape and size from one or more pieces of foam; cutting, into said foam, at least one “C” channel running in a longitudinal or a lateral direction within the foam; and coating said foam with at least one layer of reinforcing fiber and resin.

A system for mounting equipment to a vessel's hull is disclosed. The system comprises a first stringer and a second stringer, where each stringer is attachable to the inside of the vessel's hull. The system also includes a layer of adhesive attaching both stringers to the inside of the vessels hull. Both stringers have a top cap for attaching equipment. Additionally, each stringer has a first vertical side wall connected to a first end of the top cap, a second vertical side wall connected to a second end of the top cap, and two flanged portions. A first flanged portion connects to a lower end of the first vertical side wall, and a second flanged portion connects to a lower end of the second vertical side wall. The system has an open side portion at the bottom end of both stringers.

An underwater structure includes a half cylinder with ribs arranged on an interior surface. The half cylinder and the ribs are a semi-monocoque structure including a fiber reinforced thermoplastic composite.

The present disclosure relates to a folding propeller (10) for a water vehicle, comprising a hub (12) which is drivable about a rotation axis (D) via a drive shaft, and a propeller blade (14) which is arranged on the hub (12) to be pivotable about a pivot axis (S) between a maximum closed position (P1) and a maximum open position (P2), wherein the pivot axis (S) defines, together with a normal (N.sub.D) to the rotation axis (D) which intersects the pivot axis (S), a maximum opening plane (E.sub.Max), wherein in the driven state and a pivot position of the propeller blade (14) in the region of the maximum open position (P2), at least one opening force acts upon the propeller blade (14) which results from rotation of the folding propeller (10) and in relation to the rotation axis (D) is directed substantially radially outwardly, wherein an effective force application point (EAP) of the opening force is arranged spaced from the maximum opening plane (E.sub.Max) and is substantially arranged in the closing direction (SR) of the propeller blade (14). The present disclosure further relates to a folding propeller (10) comprising a propeller blade (14) which has a reversal element (143) which is configured such that during rearward drive a reversed thrust (F.sub.reverse) acts upon the reversal element (143) and is directed substantially perpendicularly to the propeller blade longitudinal axis (L.sub.P) in the opening direction (OR) of the propeller blade (14).

A watercraft includes: a central frame; a deck supported by the central frame; and first and second lateral hulls laterally spaced apart from one another, the central frame being disposed at least in part laterally between the first and second lateral hulls. Each of the lateral hulls includes: a plurality of lower hull panels mounted to the central frame, at least part of an outer surface of each lower hull panel forming a running surface of the watercraft; a plurality of braces connected between the central frame, the plurality of lower hull panels and the deck; and at least one buoyant element received in and substantially filling a space defined between the lower hull panels and the deck. Each brace includes: an inner mount connected to the central frame, a lower mount connected to at least one lower hull panel, and an upper mount connected to the deck.

The present invention is a blocking device where a block with a handle is attached to a wire and the wire is attached to a spring attached to a boat, dock, or barge. Multiple blocking devices are positioned on a boat, dock, or barge. When a person falls in the water the block is thrown in the water to prevent the person from being crushed. The block also may be in a holder.

A method for manufacturing an integrated hull by using 3D structure type fiber clothes and 3D vacuum infusion process includes: sequentially stacking at least one first fiber cloth, at least one core material and at least one second fiber cloth on a mold; deploying structural materials on the second fiber cloth; stacking the third fiber clothes to cover the structure materials and a part of the second fiber cloth, whereby the first fiber cloth, the core material, the second fiber cloth and the third fiber clothes are formed to a lamination; determining a pipe arrangement of vacuum pipes and first and second resin pipes; deploying a vacuum bag on the lamination and covering the first and second resin pipes and the vacuum pipe; executing the 3D vacuum infusion process; curing the resin; and executing a mold release process to complete an integrated hull.