In a membrane type heat insulation system for a cryogenic liquefied gas carrier cargo tank and a liquefied gas fuel container, a secondary heat insulation layer comprises a plurality of panels which are stacked in multiple layers while each pair of upper and lower panels is arranged to intersect each other, whereby heat loss which may occur in the gap between the panels can be minimized and deformation due to a temperature difference can be minimized.

A boat comprising: (a) a monolithically formed hull, the hull having a hole positioned along an upper surface of the hull above a waterline when the boat is positioned within water; and (b) a cockpit secured within the hole of the hull, wherein an exterior of the hull is free of seams directly presented to a force of moving water.

A boat comprising: (a) a monolithically formed hull, the hull having a hole positioned along an upper surface of the hull above a waterline when the boat is positioned within water; and (b) a cockpit secured within the hole of the hull, wherein an exterior of the hull is free of seams directly presented to a force of moving water.

A life raft may comprise a border tube and a canopy support tube coupled to an outer portion of the border tube. A first orifice defined by the canopy support tube is aligned with a second orifice defined by the border tube. A diameter of the first orifice is less than a diameter of the second orifice.

A floating territory is made of at least two floatable building components having the shape of a prism with a regular polygon base, such as a triangle, a square, a pentagon, a hexagon, etc. combined with sliding dovetails and dovetail grooves for sliding attachment to neighboring construction elements. The attachments allow the floatable building components to slide vertically relative to each other, thereby permitting the floating territory to follow the upward and downward movement of the waves. A method of converting floating ocean waste into structures, in particular, floating territories is also provided.

A floating territory is made of at least two floatable building components having the shape of a prism with a regular polygon base, such as a triangle, a square, a pentagon, a hexagon, etc. combined with sliding dovetails and dovetail grooves for sliding attachment to neighboring construction elements. The attachments allow the floatable building components to slide vertically relative to each other, thereby permitting the floating territory to follow the upward and downward movement of the waves. A method of converting floating ocean waste into structures, in particular, floating territories is also provided.

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.

Provided is a floating type solar power generation equipment stage (10) device, comprising a carrier (1) and a plurality of floating collars (2). The carrier (1) is made of a hard material, and has an outer frame portion (11) in a horizontal direction and a link bar (12) disposed at the center of the outer frame portion (11). Further, the outer frame portion (11) is vertically disposed with a plurality of straight strip-shaped bonding columns (13) downwards, and an adjustment portion (14) for adjusting the buoyancy of the stage is disposed on the carrier (1). Each of the plurality of floating collars (2) is a buoyant hollow ring, and its center has a sleeve hole (114) into which the bonding column (13) can be inserted so that the floating collars (2) can be arranged vertically up and down on the bonding column (13), and the stage (10) can be floated on the water with vertical buoyancy. Moreover, there is a water flow spacing between the vertically arranged floating collars (2), thereby having better floating stability and maintaining ecological functions.

Provided is a floating type solar power generation equipment stage (10) device, comprising a carrier (1) and a plurality of floating collars (2). The carrier (1) is made of a hard material, and has an outer frame portion (11) in a horizontal direction and a link bar (12) disposed at the center of the outer frame portion (11). Further, the outer frame portion (11) is vertically disposed with a plurality of straight strip-shaped bonding columns (13) downwards, and an adjustment portion (14) for adjusting the buoyancy of the stage is disposed on the carrier (1). Each of the plurality of floating collars (2) is a buoyant hollow ring, and its center has a sleeve hole (114) into which the bonding column (13) can be inserted so that the floating collars (2) can be arranged vertically up and down on the bonding column (13), and the stage (10) can be floated on the water with vertical buoyancy. Moreover, there is a water flow spacing between the vertically arranged floating collars (2), thereby having better floating stability and maintaining ecological functions.

An assembly for a watercraft according to an example of the present disclosure includes, among other things, a flotation device including an elongated slot and a mount that has first and second flanges extending outwardly from a bracket body. The first flange is configured to be mechanically attached to a frame, and the second flange is slideably received in the slot to secure the flotation device. A method of assembly for a watercraft is also disclosed.