A trimaran which includes a self-righting structure positioned near the stern that substantially raises the center of buoyancy. The trimarans two peripheral hulls are shorter than the main hull and positioned near the one end to create an unstable inverted environment wherein when inverted the vessel rests primarily on the self-righting structure and an end of the main hull, substantially raising the center of gravity and creating an unstable configuration. This causes a pitch or roll about the vessel's longitudinal axis, which continues until the vessel has returned to its more stable upright position resting on three hulls.

A trimaran which includes a self-righting structure positioned near the stern that substantially raises the center of buoyancy. The trimarans two peripheral hulls are shorter than the main hull and positioned near the one end to create an unstable inverted environment wherein when inverted the vessel rests primarily on the self-righting structure and an end of the main hull, substantially raising the center of gravity and creating an unstable configuration. This causes a pitch or roll about the vessel's longitudinal axis, which continues until the vessel has returned to its more stable upright position resting on three hulls.

An easily assembled highly portable watercraft comprising a modular boat system that seats one or more operators and is comprised of four or more pontoons connected to downward-sloping diagonally-placed outrigger beams with attached stiffeners connecting to a bridge-deck. The portable watercraft can be rowed, poled, propelled by fins or propellers, and sailed, for example, by an operator situated on the bridge-deck. The pontoons, outriggers, bridge-deck, and other aspects are easily interchangeable to conform to numerous configurations making a custom watercraft that is tailorable to varying water conditions.

An easily assembled highly portable watercraft comprising a modular boat system that seats one or more operators and is comprised of four or more pontoons connected to downward-sloping diagonally-placed outrigger beams with attached stiffeners connecting to a bridge-deck. The portable watercraft can be rowed, poled, propelled by fins or propellers, and sailed, for example, by an operator situated on the bridge-deck. The pontoons, outriggers, bridge-deck, and other aspects are easily interchangeable to conform to numerous configurations making a custom watercraft that is tailorable to varying water conditions.

A buoy assembly with a carbon fiber body may include a first unit including a hollow core rod, a weight provided on the core rod, and an anchor connection part formed on one side of the weight, a second unit including multiple interior sections made from carbon fibers that are arranged radially along an outer perimeter of the core rod to form a hollow interior barrel and multiple exterior sections made from carbon fibers that are arranged radially along an outer perimeter of the interior barrel to form a hollow exterior barrel, and a third unit including an elevator pole configured to move up and down through an upper end of the core rod, a lantern mounted on an upper end of the elevator pole, a gear assembly engaged with the elevator pole, and a maintenance chamber holding the elevator pole and the gear assembly.

A buoy assembly with a carbon fiber body may include a first unit including a hollow core rod, a weight provided on the core rod, and an anchor connection part formed on one side of the weight, a second unit including multiple interior sections made from carbon fibers that are arranged radially along an outer perimeter of the core rod to form a hollow interior barrel and multiple exterior sections made from carbon fibers that are arranged radially along an outer perimeter of the interior barrel to form a hollow exterior barrel, and a third unit including an elevator pole configured to move up and down through an upper end of the core rod, a lantern mounted on an upper end of the elevator pole, a gear assembly engaged with the elevator pole, and a maintenance chamber holding the elevator pole and the gear assembly.

An easily assembled highly portable watercraft comprising a modular boat system that seats one or more operators and is comprised of four or more pontoons connected to downward-sloping diagonally-placed outrigger beams with attached stiffeners connecting to a bridge-deck. The portable watercraft can be rowed, poled, propelled by fins or propellers, and sailed, for example, by an operator situated on the bridge-deck. The pontoons, outriggers, bridge-deck, and other aspects are easily interchangeable to conform to numerous configurations making a custom watercraft that is tailorable to varying water conditions.

An easily assembled highly portable watercraft comprising a modular boat system that seats one or more operators and is comprised of four or more pontoons connected to downward-sloping diagonally-placed outrigger beams with attached stiffeners connecting to a bridge-deck. The portable watercraft can be rowed, poled, propelled by fins or propellers, and sailed, for example, by an operator situated on the bridge-deck. The pontoons, outriggers, bridge-deck, and other aspects are easily interchangeable to conform to numerous configurations making a custom watercraft that is tailorable to varying water conditions.

A structure, comprising a multilayer fabric infused by a resin, is disclosed. There is also provided a method for manufacturing a structure, comprising, laying a multilayer fabric over a mold of the structure; and infusing a resin into the multilayer fabric. The structure can be, by way of example only, a canoe, a wind fairing, a panel for use as wall decoration, a cover of a body of a vehicle, a corn hole game surface or a pickle ball paddle face.

A structure, comprising a multilayer fabric infused by a resin, is disclosed. There is also provided a method for manufacturing a structure, comprising, laying a multilayer fabric over a mold of the structure; and infusing a resin into the multilayer fabric. The structure can be, by way of example only, a canoe, a wind fairing, a panel for use as wall decoration, a cover of a body of a vehicle, a corn hole game surface or a pickle ball paddle face.