A multidimensional structures that is formed of thirty six interconnecting members in such a manner as to form eight (8) tetrahedrons and six (6) octahedrons thereby providing a structure that is both light weight and strong, the interconnecting members variously intersecting at a central point that may be formed of a single unified structure having fillets in the middle of the multidimensional structure and at twelve (12) external connecting points.

A multidimensional structures that is formed of thirty six interconnecting members in such a manner as to form eight (8) tetrahedrons and six (6) octahedrons thereby providing a structure that is both light weight and strong, the interconnecting members variously intersecting at a central point that may be formed of a single unified structure having fillets in the middle of the multidimensional structure and at twelve (12) external connecting points.

A collapsible boat hull (10) with at least one bottom panel (16,18) and two side panels (12,14), and a removable transom (32) with attachment means (36) to engage the transom with the two sides of the boat hull, such that, during installation of the transom member, the attachment means initially engages with the sides of the boat, and rotation of the transom to an upright position in the boat hull retains the attachment means and the respective sides of the boat hull together. Releasable latches (42,44) at the lower edge of the transom engage with retaining members (54) on the bottom panels. Seating or cross-bracing has (100) which releasably engage with retainers on the sides of the boat.

A collapsible boat hull (10) with at least one bottom panel (16,18) and two side panels (12,14), and a removable transom (32) with attachment means (36) to engage the transom with the two sides of the boat hull, such that, during installation of the transom member, the attachment means initially engages with the sides of the boat, and rotation of the transom to an upright position in the boat hull retains the attachment means and the respective sides of the boat hull together. Releasable latches (42,44) at the lower edge of the transom engage with retaining members (54) on the bottom panels. Seating or cross-bracing has (100) which releasably engage with retainers on the sides of the boat.

A rotational sliding bearing having a static part and a mobile part, each having a sub-shell with a sliding surface, each surface arranged within an angular range of max. 180° relative to the rotational axis in the direction of rotation of the bearing, and in a closed rest position, the sub-shells of all parts together form a bearing bush, the mobile part is arranged to pivot about a pivot axis for opening the bearing relative to the static part, such that a shaft mounted in the bearing is released in a release position, and the mobile part is shaped such that, based on the sliding surface position relative to the rotational axis, in the closed rest position, a translation of a shaft accommodated in the bearing is prevented transversely to the rotational axis and in the direction of the pivot axis of the mobile part or in the counter direction.

The instant invention is a deck barge or other vessel formed using a core of styrofoam members stiffened by fiberglass cladding with said styrofoam/fiberglass core being partially clad in concrete, which concrete is reinforced with L or U shaped rebar over/around corners and which concrete is also sheathed on its exterior and interior sides by fiberglass matting that is concrete saturated during the process in order to produce a simple, easily manufactured design that is unsinkable, inexpensive, and carries substantial weight for its size. In the preferred embodiments, the concrete cladding entirely covers the port and starboard sides as well as the top/deck of the vessel and portions of the bottom.

The instant invention is a deck barge or other vessel formed using a core of styrofoam members stiffened by fiberglass cladding with said styrofoam/fiberglass core being partially clad in concrete, which concrete is reinforced with L or U shaped rebar over/around corners and which concrete is also sheathed on its exterior and interior sides by fiberglass matting that is concrete saturated during the process in order to produce a simple, easily manufactured design that is unsinkable, inexpensive, and carries substantial weight for its size. In the preferred embodiments, the concrete cladding entirely covers the port and starboard sides as well as the top/deck of the vessel and portions of the bottom.

This invention is a convertible boat and blind made of a substantially flat sheet of foldable material that in one configuration may be folded into a boat and in a second configuration may be folded into a blind. The invention may also be folded into an optional third storage configuration.

This invention is a convertible boat and blind made of a substantially flat sheet of foldable material that in one configuration may be folded into a boat and in a second configuration may be folded into a blind. The invention may also be folded into an optional third storage configuration.