A house is provided. The house includes a base and a roof. The roof is attached to the base. The base has sufficient buoyancy to enable the house to float on water.

An article of manufacture including molded-in notches in the peripheral edge of long, uninterrupted molded-in compartments in a rotational molded boat hull for permitting the flush fitting of certain independent structural members in said notches to provide both structural support and drainage of water away from seams between adjacent deck panels and hatches secured over the compartments without resorting to elaborate pre-fabricated decks. The article of manufacture includes a body, wherein the body is a plastic molded boat hull comprised of numerous molded-in cavities and molded-in features to create an interior layout that is comparable to a conventional boat built of aluminum or fiber reinforced plastic.

The present disclosure describes recreational watercraft that provide a ballast system and an open platform passenger deck. An example is an aluminum hull including a ballast system to regulate displacement by the recreational watercraft and an open platform passenger deck as an integral upper surface to the aluminum hull. Multiple sides, continuous from the aluminum hull, include a stern side, a bow side, a port side, and a starboard side that surround a perimeter of the open platform passenger deck. An inboard power plant is located within a stern portion of the aluminum hull to propel the recreational watercraft.

The present disclosure describes recreational watercraft that provide a ballast system and an open platform passenger deck. An example is an aluminum hull including a ballast system to regulate displacement by the recreational watercraft and an open platform passenger deck as an integral upper surface to the aluminum hull. Multiple sides, continuous from the aluminum hull, include a stern side, a bow side, a port side, and a starboard side that surround a perimeter of the open platform passenger deck. An inboard power plant is located within a stern portion of the aluminum hull to propel the recreational watercraft.

A house is provided. The house includes a base and a roof. The roof is attached to the base. The base has sufficient buoyancy to enable the house to float on water.

A house is provided. The house includes a base and a roof. The roof is attached to the base. The base has sufficient buoyancy to enable the house to float on water.

Embodiments include a retrofit pontoon system including a pontoon, the pontoon having a pontoon body defining a first cavity, the pontoon body having a first aperture; a retrofit assembly, the retrofit assembly including a selectively fillable container sized to pass through the first aperture; and a pump. The pump is operably coupled with the selectively fillable container such that operation of the pump selectively fills and drains water from the selectively fillable container, wherein filling the selectively fillable container lowers the profile of the pontoon in the water and emptying the selectively fillable container raises the profile of the pontoon in the water.

Embodiments include a retrofit pontoon system including a pontoon, the pontoon having a pontoon body defining a first cavity, the pontoon body having a first aperture; a retrofit assembly, the retrofit assembly including a selectively fillable container sized to pass through the first aperture; and a pump. The pump is operably coupled with the selectively fillable container such that operation of the pump selectively fills and drains water from the selectively fillable container, wherein filling the selectively fillable container lowers the profile of the pontoon in the water and emptying the selectively fillable container raises the profile of the pontoon in the water.

Techniques and systems for neutralizing discharge waters from ballast and/or cooling water biocidal treatment and disinfection systems are provided. The systems utilize oxidation reduction potential control to regulate the dechlorination of a biocidal agent to allowable discharge levels in ship buoyancy systems and ship cooling water systems.

Techniques and systems for neutralizing discharge waters from ballast and/or cooling water biocidal treatment and disinfection systems are provided. The systems utilize oxidation reduction potential control to regulate the dechlorination of a biocidal agent to allowable discharge levels in ship buoyancy systems and ship cooling water systems.