A marine thru-hull fitting drainage device for directing fluid away from a thru-hull fitting installed through a bore in a hull of a vessel includes: an elongate thru-hull body forming a channel and having a flange formed on an end thereof; a channel body formed on a face of the flange and extending away from the hull of the vessel, the channel body forming a drainage channel for directing water from the channel of the thru-hull body away from the hull of the vessel; a groove formed in the channel body; and a lip protruding from a bottom edge of the channel body.

The novel bladder systems and tie down systems set forth herein provide systems and apparatuses that mitigate or prevent damage, such as tipping over/capsizing, of a watercraft stored on shore or an aircraft secured to a ground surface during adverse wind, rising water, or storm events. Further, novel apparatuses and methods for storing a watercraft using the bladders as cushioning or holding devices when installed within a cavity, whether the cavity is created by digging a hole or building an enclosing berm, provides additional stability and security for the watercraft during adverse wind, rising water, or storm events.

The novel bladder systems and tie down systems set forth herein provide systems and apparatuses that mitigate or prevent damage, such as tipping over/capsizing, of a watercraft stored on shore or an aircraft secured to a ground surface during adverse wind, rising water, or storm events. Further, novel apparatuses and methods for storing a watercraft using the bladders as cushioning or holding devices when installed within a cavity, whether the cavity is created by digging a hole or building an enclosing berm, provides additional stability and security for the watercraft during adverse wind, rising water, or storm events.

A marine surface vessel includes an air ventilated hull, and a deck, where the vessel includes at least one air conduit leading to at least one ventilation opening beneath a waterline of the vessel. The at least one air conduit is arranged to guide air to the at least one ventilation opening, where the deck is at least party surrounded by a gunwale, where the at least one air conduit is arranged to guide the air from at least one water drainage opening arranged to drain water from the deck.

A marine surface vessel includes an air ventilated hull, and a deck, where the vessel includes at least one air conduit leading to at least one ventilation opening beneath a waterline of the vessel. The at least one air conduit is arranged to guide air to the at least one ventilation opening, where the deck is at least party surrounded by a gunwale, where the at least one air conduit is arranged to guide the air from at least one water drainage opening arranged to drain water from the deck.

Disclosed herein are a method and a system for forming an air layer over a portion of an engineered surface, wherein the air layer is formed with a reduced flux and preferentially steering gas away from, or toward, a specific location by way of a hydrophobic surface, a hydrophilic surface, and/or a structured surface. Moreover, disclosed are a method and a system for recovering or separating a portion of the gas or other fluid layer.

Disclosed herein are a method and a system for forming an air layer over a portion of an engineered surface, wherein the air layer is formed with a reduced flux and preferentially steering gas away from, or toward, a specific location by way of a hydrophobic surface, a hydrophilic surface, and/or a structured surface. Moreover, disclosed are a method and a system for recovering or separating a portion of the gas or other fluid layer.

A method for exhaust gas treatment in vessels/installations located in a body of water is disclosed. The method comprises admixing ambient air to exhaust gas in a dilution unit (3) resulting in diluted exhaust gas, drawing water and diluted exhaust gas into bubble generator (4) and generating bubbles containing diluted exhaust gas in the water, and releasing the bubble-containing water into the body of water. A corresponding system is also disclosed.

A method for exhaust gas treatment in vessels/installations located in a body of water is disclosed. The method comprises admixing ambient air to exhaust gas in a dilution unit (3) resulting in diluted exhaust gas, drawing water and diluted exhaust gas into bubble generator (4) and generating bubbles containing diluted exhaust gas in the water, and releasing the bubble-containing water into the body of water. A corresponding system is also disclosed.

[Problem] To provide a method for further reducing the friction resistance of a friction resistance reduced ship. [Solution] Rolling and pitching vary greatly depending on variations in climate, etc.; however, when limited to an extremely short time, the rolling and pitching repeat in an almost identical or similar pattern. Therefore, if the pattern of the immediately preceding rolling and pitching is understood, the subsequent pattern can also be predicted. This is similar for vertical position variation patterns of minute bubble generation units calculated from the angle of the rolling and pitching. Furthermore, the vertical position variation also differs depending on the installation position of each minute bubble generation unit, so the present invention measures the vertical position variation for each minute bubble generation unit, while also predicting the vertical position variation at and after the current time. The predicted vertical position variation is compared with the waterline height, while the time at which the minute bubble generation units below the sea surface will be above the sea surface or the time at which the minute bubble generation units above the sea surface will be below the sea surface are predicted, and an ON/OFF valve 8 is switched at that time.