The present invention relates to improvements to fill prevention devices and more particularly to a permanently installed fill prevention device used for potable water tanks. There are other fill prevention devices however because other fill prevention devices related to potable water systems require them to be removed before filling the water tank, these other devices are difficult to use and are often lost. The present invention discloses a circular disk (1) made from plastic such as Nylon, High Density Polypropylene, or other inert durable plastic. The outer area of the disk is threaded (3) to allow this fill prevention device to be threaded into existing potable water deck fill (7) When in place the device will prevent the insertion of a fuel nozzle, hence keeping the water tank and potable water contamination free. From the center of the circular disk is a hollow cylinder (2) which rises vertically and is connected to the inner wall of the circular disk. The diameter of this hollow cylinder is such so that the end of a garden hose (5) can be inserted over it to fill the water tank. Along the bottom edge of the device are holes (4) that allow air and excess water to escape. This device when inserted into an existing deckfill (7) creates both a mechanical barrier along with a visual deterrent due to it's blue color which is consistent with containers used for potable water.

This device when inserted still allows the existing deck cap (6) to be used.

This fill prevention device can also be manufactured into a deckfill (12) as shown in FIG. 7.

The advantage of having this device in place is to prevent the costly error of accidentally adding fuel to a watercrafts potable water system. This is an error that occurs often and results in irreparable damage to the watercrafts potable water tank resulting in thousands of dollars of damage; in most cases causing the need for expensive replacement of the watercrafts water tank system. There is also the creation of a hazardous waste material when mixing fuel within the water system. This will affect the need for proper hazardous waste disposal.

The present disclosure relates to a system for fresh water supply using a desalination vessel and an autonomous navigation vessel, and more particularly, to a system for fresh water supply using a desalination vessel and an autonomous navigation vessel capable of, in providing fresh water to a plurality of islands using a vessel equipped with a desalination apparatus and an autonomous navigation vessel, setting an optimal fresh water supply route in consideration of the fresh water retention status of islands, location information of islands, and fresh water requirement amount for each route, and based on this, supplying fresh water to each of the islands, thereby minimizing the operation cost of the vessels and stably providing fresh water to the islands requiring fresh water, and the system for fresh water supply using a desalination vessel.

The present disclosure relates to a system for fresh water supply using a desalination vessel and an autonomous navigation vessel, and more particularly, to a system for fresh water supply using a desalination vessel and an autonomous navigation vessel capable of, in providing fresh water to a plurality of islands using a vessel equipped with a desalination apparatus and an autonomous navigation vessel, setting an optimal fresh water supply route in consideration of the fresh water retention status of islands, location information of islands, and fresh water requirement amount for each route, and based on this, supplying fresh water to each of the islands, thereby minimizing the operation cost of the vessels and stably providing fresh water to the islands requiring fresh water, and the system for fresh water supply using a desalination vessel.

The present disclosure relates to a biocide generating system for inhibiting bio-fouling within a water system of a watercraft. The water system is configured to draw water from a body of water on which the watercraft is supported. The biocide generating system includes an electrode arrangement adapted to be incorporated as part of an electrolytic cell through which the water of the water system flows. The water system is configured such that biocide treated water also flows to one or more components of the water system that are positioned upstream of the electrode arrangement.

The present disclosure relates to a biocide generating system for inhibiting bio-fouling within a water system of a watercraft. The water system is configured to draw water from a body of water on which the watercraft is supported. The biocide generating system includes an electrode arrangement adapted to be incorporated as part of an electrolytic cell through which the water of the water system flows. The water system is configured such that biocide treated water also flows to one or more components of the water system that are positioned upstream of the electrode arrangement.

The present disclosure relates to a system for fresh water supply using a desalination vessel and an autonomous navigation vessel, and more particularly, to a system for fresh water supply using a desalination vessel and an autonomous navigation vessel capable of, in providing fresh water to a plurality of islands using a vessel equipped with a desalination apparatus and an autonomous navigation vessel, setting an optimal fresh water supply route in consideration of the fresh water retention status of islands, location information of islands, and fresh water requirement amount for each route, and based on this, supplying fresh water to each of the islands, thereby minimizing the operation cost of the vessels and stably providing fresh water to the islands requiring fresh water, and the system for fresh water supply using a desalination vessel.

The present disclosure relates to a system for fresh water supply using a desalination vessel and an autonomous navigation vessel, and more particularly, to a system for fresh water supply using a desalination vessel and an autonomous navigation vessel capable of, in providing fresh water to a plurality of islands using a vessel equipped with a desalination apparatus and an autonomous navigation vessel, setting an optimal fresh water supply route in consideration of the fresh water retention status of islands, location information of islands, and fresh water requirement amount for each route, and based on this, supplying fresh water to each of the islands, thereby minimizing the operation cost of the vessels and stably providing fresh water to the islands requiring fresh water, and the system for fresh water supply using a desalination vessel.

A vessel (10) comprising a plurality of hulls (15, 15c, 15o) on which is mounted a support (35) with a plurality of solar cells (30) mounted on the support (35) and connected to a plurality of batteries (40) is disclosed. A plurality of osmosis desalination devices (50) is connected electrically to the plurality of batteries (40) and have an input connected to a water supply and an output (54) connected to at least one water storage tank (60).

A vessel (10) comprising a plurality of hulls (15, 15c, 15o) on which is mounted a support (35) with a plurality of solar cells (30) mounted on the support (35) and connected to a plurality of batteries (40) is disclosed. A plurality of osmosis desalination devices (50) is connected electrically to the plurality of batteries (40) and have an input connected to a water supply and an output (54) connected to at least one water storage tank (60).

The present disclosure relates to a biocide generating system for inhibiting bio-fouling within a water system of a watercraft. The water system is configured to draw water from a body of water on which the watercraft is supported. The biocide generating system includes an electrode arrangement adapted to be incorporated as part of an electrolytic cell through which the water of the water system flows. The water system is configured such that biocide treated water also flows to one or more components of the water system that are positioned upstream of the electrode arrangement.