A water vessel includes a deck having an upper surface and a lower surface. First and second hulls are spaced-apart from one another and operably coupled to the lower surface of the deck. At least one of the first and second hulls has an at least partially hollow interior. A storage tank is positioned within the at least partially hollow interior of at least one of the first and second hulls. A tub for holding water is supported by the deck. The tub includes an interior cavity having a capacity and is fluidically coupled to the storage tank. The storage tank has a capacity less than the capacity of the tub. A pump system is configured to direct water between the tub and the storage tank and at least partially fill the capacity of the tub.

A system and method are used for manipulation of a spa cover between a closed position, an open position, and a parking position, whereby the cover has a first carrier segment coupled to an actuator and a second carried segment rotatably connected to the first carrier segment. An axis of rotation of the first carrier segment is first raised from a resting position to an upper position, thereby raising the first carrier segment and creating a gap between the first carrier segment and an edge of the spa vessel. The first carrier segment is then rotated about the axis of rotation, which is situated outside of a ground plan of the spa. The second carried segment is pulled towards the first carrier segment as the first carrier segment is rotated. The first carrier segment is rotated to the open position wherein the segments are in a vertical position with their respective lower bearing surfaces facing each other.

A system and method are used for manipulation of a spa cover between a closed position, an open position, and a parking position, whereby the cover has a first carrier segment coupled to an actuator and a second carried segment rotatably connected to the first carrier segment. An axis of rotation of the first carrier segment is first raised from a resting position to an upper position, thereby raising the first carrier segment and creating a gap between the first carrier segment and an edge of the spa vessel. The first carrier segment is then rotated about the axis of rotation, which is situated outside of a ground plan of the spa. The second carried segment is pulled towards the first carrier segment as the first carrier segment is rotated. The first carrier segment is rotated to the open position wherein the segments are in a vertical position with their respective lower bearing surfaces facing each other.

A lighting system includes a substrate of non-absorbent foam material having a first surface, an undercut groove formed in the first surface, and a light source disposed in the undercut groove. The lighting system can be used with various structures including, but not limited to spas, swimming pools, decks, marine products, and sheds.

A lighting system includes a substrate of non-absorbent foam material having a first surface, an undercut groove formed in the first surface, and a light source disposed in the undercut groove. The lighting system can be used with various structures including, but not limited to spas, swimming pools, decks, marine products, and sheds.

A system and method are used for manipulation of a spa cover between a closed position, an open position, and a parking position, whereby the cover has a first carrier segment coupled to an actuator and a second carried segment rotatably connected to the first carrier segment. An axis of rotation of the first carrier segment is first raised from a resting position to an upper position, thereby raising the first carrier segment and creating a gap between the first carrier segment and an edge of the spa vessel. The first carrier segment is then rotated about the axis of rotation, which is situated outside of a ground plan of the spa. The second carried segment is pulled towards the first carrier segment as the first carrier segment is rotated. The first carrier segment is rotated to the open position wherein the segments are in a vertical position with their respective lower bearing surfaces facing each other.

A floating construction (1, 11) includes a vessel (2, 12) partially or fully filled with water and with transparent walls or with walls including transparent sections, and space (3, 5, 6) provided around or partially around the vessel, where the vessel includes at least one opening allowing the surrounding water to enter into the vessel, wherein the space (3, 5, 6) provided around the vessel (2, 12) is enclosed to provide interior observation area for activities taking place inside the vessel.

A floating construction (1, 11) includes a vessel (2, 12) partially or fully filled with water and with transparent walls or with walls including transparent sections, and space (3, 5, 6) provided around or partially around the vessel, where the vessel includes at least one opening allowing the surrounding water to enter into the vessel, wherein the space (3, 5, 6) provided around the vessel (2, 12) is enclosed to provide interior observation area for activities taking place inside the vessel.