Abstract: A hull for deployment as an underwater habitable vessel is described. The hull has at least two hull wall modules connected in series to enclose an interior volume of the underwater habitable vessel. The interior volume is bounded by the hull wall modules. There is also provided a kit of parts for a hull of an underwater habitable vessel. The kit comprises at least two hull wall modules configured to be connected in series to enclose an interior volume of the underwater habitable vessel. The interior volume is bounded by the hull wall modules when connected.

Abstract: The invention relates to a pressure hull for human occupancy, which is manufactured using an additive manufacturing process. This results in increased structural integrity and safety for the occupants of the pressure hull.

Abstract: A decorative, internally-lighted ribbon is formed by a light string and two elongated strips of flexible, semi-translucent material which are connected to form a hollow, elongated sleeve-like enclosure within which a light string is positioned to extend substantially along the length of the enclosure. The semi-translucent material of the strips transfers light from the light string through the strips to create an exterior visual appearance of internal lighting along the length of the ribbon. An internal structure, such as a wire, holds the strips in a flat ribbon-like configuration and allows the ribbon to be bent into decorative shapes. The strips are preferably fire-retardant.

Abstract: An ornament display device and wreath insert is inserted into the center of a wreath and provides a flat surface for displaying objects. The display device comprises a plurality of prongs each having at least one serration, with each prong adapted to contact the wreath core and establish an interference fit sufficient to hold the support in position without tipping around the core. A platform of a predetermined configuration, e.g., concave shaped ends, helps to secure the platform within the center of a wreath. A placard displays a message or other decorative graphic and is shaped to substantially hide the platform and the prongs.