A wakeboat has a hull, the hull forming a wake when moving forward in the water, with a left quiet region and a right quiet region in the wake. The hull may exhibit rotation around one or more of its roll, pitch, and yaw axes which affects the quiet regions in the wake. A gyroscope supported in the hull may be used to rotate the hull around one or more axes. Such rotation may be used to create a surf left and/or surf right configuration, and measured via one or more sensors. Other systems and methods are also provided.

A construction method for a column platform barrel deck and topside facilities, and a column platform. The construction method includes: prefabricating topside facilities in form of modules one by one, lifting each module to a predetermined position on the topmost deck of the upright barrel, and then connecting the modules to each other and forming a module-integration bottom deck at the bottom; during construction of the upright barrel, a skylight opening is reserved on the barrel topmost deck for the installation of the topsides, and the skylight opening allows the modular-integration bottom deck to be placed inside; an on-site closing gap is formed between the edge of the skylight opening and the outer edge of the modular-integration bottom deck perimeter; using the on-site closing gap connection structures to fill the on-site closing gap, so that the modular-integration bottom deck and the barrel topmost deck jointly form an integrated platform deck.

A construction method for a column platform barrel deck and topside facilities, and a column platform. The construction method includes: prefabricating topside facilities in form of modules one by one, lifting each module to a predetermined position on the topmost deck of the upright barrel, and then connecting the modules to each other and forming a module-integration bottom deck at the bottom; during construction of the upright barrel, a skylight opening is reserved on the barrel topmost deck for the installation of the topsides, and the skylight opening allows the modular-integration bottom deck to be placed inside; an on-site closing gap is formed between the edge of the skylight opening and the outer edge of the modular-integration bottom deck perimeter; using the on-site closing gap connection structures to fill the on-site closing gap, so that the modular-integration bottom deck and the barrel topmost deck jointly form an integrated platform deck.

Systems and methods are disclosed herein for a modular buoy deployment system including modules arranged to be assembled at a destination location and an aerial delivery apparatus arranged to deliver the buoy modules to the destination location. The modules are connectable to at least one other module and form a buoy when assembled. The module buoy deployment system also optionally includes a platform arranged to receive one or more aerial delivery apparatuses. Each module conforms to a delivery criteria of the aerial delivery apparatus. The module buoy deployment system also optionally includes a power system arranged to recharge the aerial delivery apparatus.

Systems and methods are disclosed herein for a modular buoy deployment system including modules arranged to be assembled at a destination location and an aerial delivery apparatus arranged to deliver the buoy modules to the destination location. The modules are connectable to at least one other module and form a buoy when assembled. The module buoy deployment system also optionally includes a platform arranged to receive one or more aerial delivery apparatuses. Each module conforms to a delivery criteria of the aerial delivery apparatus. The module buoy deployment system also optionally includes a power system arranged to recharge the aerial delivery apparatus.

The present invention provides a strike assembly type fixing device for a shipyard, in which the lower end of a fixture is inserted into a fixing groove formed in a fixing plate and the upper end of the fixture is screwed to be coupled to a separate fastening element are fixed. The strike assembly type fixing device for a shipyard according to the present invention is configured such that a protruding flange inclined downward is integrally formed with a fixture to form a single body at a portion where an upper end and a lower end of a fixture are connected to each other, and a packing ring is provided to be inserted into the lower end of the fixture in close contact with the protruding flange.

A catamaran lifting apparatus is disclosed for lifting objects in a marine environment. The apparatus includes first and second vessels that are spaced apart during use. A first frame spans between the vessels. A second frame spans between the vessels. The frames are spaced apart and connected to the vessels in a configuration that spaces the vessels apart. The first frame connects to the first vessel with a universal joint and to the second vessel with a hinged connection. The second frame connects to the second vessel with a universal joint and to the first vessel with a hinged or pinned connection. Each of the frames provides a space under the frame and in between the barges that enables a package to be lifted and/or a marine vessel to be positioned in between the barges and under the frames. In this fashion, an object that has been salvaged from the seabed can be placed upon the marine vessel that is positioned in between the barges and under the frames.

A catamaran lifting apparatus is disclosed for lifting objects in a marine environment. The apparatus includes first and second vessels that are spaced apart during use. A first frame spans between the vessels. A second frame spans between the vessels. The frames are spaced apart and connected to the vessels in a configuration that spaces the vessels apart. The first frame connects to the first vessel with a universal joint and to the second vessel with a hinged connection. The second frame connects to the second vessel with a universal joint and to the first vessel with a hinged or pinned connection. Each of the frames provides a space under the frame and in between the barges that enables a package to be lifted and/or a marine vessel to be positioned in between the barges and under the frames. In this fashion, an object that has been salvaged from the seabed can be placed upon the marine vessel that is positioned in between the barges and under the frames.

A molded boat with a seat drain. The boat includes a molded hull having been molded using a first material to cause the boat to have a front portion and a rear portion. The boat is molded with a bench, having been molded together with the hull using the first material. The bench includes a drain hole formed through, an otherwise solid face of the bench allowing water to flow from the front portion of the boat to the rear portion of the boat, wherein the drain hole formed through the bench is formed by using a tube molded into, and under the bench, the tube comprising a material having a higher melting point than the first material.

A watercraft light adapted to fit in a rub rail is provided. The watercraft light longitudinally extends in a portion of the rub rail and provides light to the exterior of the watercraft. A watercraft light system and method of installing the watercraft light are also presently disclosed.