Abstract: Frictional resistance to motion of a boat is reduced by generating an unconfined layer of intermixed air bubbles and water adjacent at least a portion of the hull of the boat including at upcurving side surfaces of the hull. In the preferred form of the invention, an array of spaced apart airflow apertures in the hull extends outward and upward at each side of the keel at a plurality of locations along the hull. Air is forced through the apertures by a compressor or a forward facing air scoop or by a combination of both. In the preferred embodiment, barnacle inhibiting fluid may be released through the array of apertures when the boat is docked or at anchor.

Abstract: A boat washing system is provided for use with a boat lift having a frame for supporting an boat and a drive mechanism for selectively raising the frame to lift the boat from the water and lowering the frame to lower the boat into the water. The washing system includes a sprayer assembly having a plurality of spray nozzles. The sprayer assembly is communicably connected to a source of water under pressure. The sprayer assembly is mounted to the frame of the boat lift such that the spray nozzles are directed at the hull of the boat supported on the frame. Water is introduced into the sprayer assembly and directed through the spray nozzles at the hull of the boat.

Abstract: An anti-fouling apparatus and method for retarding the formation of marine plants and animals on marine surfaces submerged in water is disclosed. Telescopically extendable support arm members in the form of pneumatic struts are pivotally mounted on a mounting bracket for selective movement between a first raised position, at which the distal end is raised out of the water, and a second lowered position, at which the distal end is submerged in the water. A selectively energizable water propulsion means, which includes an electrically powered motor and a propeller, is operatively mounted on the support arm member adjacent to the distal end so as to be submerged in the water when the support arm is in the second lowered position.

Abstract: An apparatus for cleaning ship hulls underwater. A frame is supported by controlled buoyancy tanks which may be flooded to sink the apparatus beneath a ship, blown to a neutral buoyancy for easy underwater maneuvering, or blown to a positive buoyancy so to adhere against the inverted hull of a ship. The apparatus, when underwater against a hull, rides on two independently powered wheels which are individually driven by hydraulic motors for individual control by the diver. These wheels, extending above the upper surface of the apparatus in its submerged position, engage the hull, driving the apparatus along the hull. At the forward end of the apparatus is a reciprocating chipper blade, an angled or concave, hardened steel blade driven by a vibratory impact apparatus at a high repetition rate through a very short stroke.

Abstract: Shrouded towers for supporting adjustably cantilevered work platforms for performing external surface work on ship hulls (such as abrading and painting) are modularized for sake of economy and efficient utilization, including shifting of modules using techniques and equipment currently used for shifting shipping containers. Supply and recovery line connections between support barge-mounted equipment, floating drydock and work platform-mounted work applicators is facilitated by fixed installation of some portions and the provision of flexible connectors between these portions. Alternative adjustable cantilevering structures are disclosed for mounting the work platforms to the vertically movable trolleys. Preferably, rotating wheels rather than compressed air, are used to propel the abrasive grit against the hull surface, and abrasive supply systems having degrees of automated recovery of spent grit are disclosed.

Abstract: The invention provides a method for the lining of an organism deposit-inhibition structure, which enables that structure to be easily lined to an application surface, has superior characteristics to inhibit deposition of organisms and durability, dispenses with maintenance work, and offers no toxicity problems. A resin layer made up of an electrical insulating material is bonded to the inner wall periphery of a cylindrical pipe member. A metal gauze of a copper alloy is applied onto the surface of the resin layer. The metal gauze is either unfolded and drawn out or rolled over with the inner side turned outwards for its application to the surface of the resin layer. The copper alloy has a Be content of 0.2 to 2.8% by weight, and is selected from, e.g., Be--Cu, Be--Co--Cu, Be--Co--Si--Cu and Be--Ni--Cu alloys.

Abstract: For coating the exterior of a ship hull while the ship is in drydock or afloat, creating a sizable chamber with comprehensive staging access for all required work, sealing off that chamber to contain environmentally unacceptable byproducts of the coating process, to keep storm water runoff from passing through spent abrasive and paint overspray on the deck of the drydock or barge and to keep out weather conditions which could delay and deteriorate the quality of this coating process, ventilating and evacuating the chamber maintaining an atmosphere inside the chamber which is conducive to worker safety and high coating quality and maintaining an atmosphere outside the chamber which is conducive to meeting requirements for the clean air and clean water laws and regulations, and at the same time reducing the overall cost of coating.

Abstract: Dry, particulate abrasive for use in abrasive blast cleaning of a ship hull is supplied to blasting pots from abrasive supply hopper assemblies lifted into place from a recycling station. Spent abrasive, with debris, is collected and placed on a conveyor belt extending parallel to the keel blocks, for conveying the collected material to the recycling station. There, the collected material is processed to remove undersized and foreign material from the reuseable abrasive grit. The latter is loaded into supply hopper assemblies, which are crane-lifted back into supplying relation with respective blasting pots. By preference, the abrasive blasting work takes place from elevatable, curtain-enclosed platforms supported on a drydock floor, the blasting pots are located on the drydock wing wall, the abrasive grit is ferromagnetic and recovered from the drydock floor partly with the aid of a magnetic abrasive pick-up unit, and the recycling station is located on a barge moored at an end of the drydock.

Abstract: A portable manual boat hull cleaner is disclosed in which a plurality of cleaning loops are attached to a strap having handles at either end, said cleaning loops comprising support pads sandwiched between a strap and a detachable scrubbing pad by two anchor flaps. The cleaning loops are placed at regular intervals along the length of the strap. The entire cleaning device may be placed beneath the hull of a boat and moved back and forth in the manner of a shoe shine rag to remove marine growth from the submerged surface of a boat hull.

Abstract: A drainage apparatus for draining water from the top surface of a tarp which has been used to cover an exterior object. The drainage apparatus includes a funnel and a washer which is to abut against the back surface of the funnel with the funnel having a tubular section which is conducted through a hole in the tarp. A clamp nut is tightened against the back surface of the washer. A drain hose is connected to the tubular lower end with the water to be conducted through the funnel into the drain hose and then to a disposing location.

Abstract: Apparatus adapted to prevent or eliminate the attachment of marine organisms to surfaces of marine craft through the use of localized heating of the protected surfaces.

Abstract: An apparatus is provided for protectively covering an outcropping, such as a motor prop, of a boat. The cover includes an adjustable collar, a flexible, opaque bag, and an adjustable collar draw line. The bag has an open top end attached to the collar. A closed bottom end of the bag is opposed to the top end, and has a weight attached thereto. The adjustable collar draw line of the collar is such that with the bag placed over the outcropping, the open end of the bag may be closed around the outcropping by pulling the adjustable collar draw line. The collar includes a locking slot for locking the adjustable collar draw line in place around the outcropping. A manipulation handle removably attaches to the collar for facilitating the placement and removal of the cover onto and off of the outcropping.

Abstract: An anti-fouling protector in the form of flexible envelope complementary to the underwater body of a vessel's hull is negatively buoyant and, when not in use, is stored on the bottom of a mooring slip. The invention includes structural features of the slip for guiding endless ropes fixed to the envelope for raising it around the vessel's underwater body when the vessel is moored in the slip, just before a vessel leaves the slip, lanyards connected to the envelope are detached from the vessel and the envelope sinks to its storage position on the bottom of the slip, where anchored lower rope guides prevent the envelope from being moved away by current.

Abstract: A covering material for underwater objects such as boat hulls or water intake pipes. The covering includes a waterproof coating such as adhesive or paint containing capsicum derivatives such as cayenne pepper or oleoresin capsicum, with the coating applied to the outer surface of the object to be protected, to repel marine organisms which might otherwise attach themselves to the object. In some applications copper material may also be applied to the coating.

Abstract: The apparatus includes a support mechanism for supporting the cleaning apparatus in the body of water, a hull cleaning assembly including a plurality of brush assemblies, and a mechanism for moving the brush assemblies between hull cleaning positions and hull clearing positions. The brush assemblies each have a buoyancy element, a motor supported by the buoyancy element, and a cleaning brush coupled to a drive shaft of the motor. The buoyancy elements of the brush assemblies are hinged together to constitute a unified hull cleaning assembly. The moving mechanism includes a control device for controlling the movement of the brush assemblies. In addition, the moving mechanism includes a plurality of control lines movably engaging the support mechanism. The control lines are connected to the brush assemblies respectively at one end and to the control device at the other end. The support mechanism includes a pulley arrangement rotatably secured therein.

Abstract: A method and template to facilitate cleaning or painting of a gimbal housing which is mounted to a boat transom. This method comprises attaching a template to the transom around a gimbal housing perimeter which is intricately and arcuately shaped. The template is configured and dimensioned to correspond to the gimbal housing perimeter and to shield the transom from damage while cleaning or painting the gimbal housing. Thus, the amount of time required to clean and paint the gimbal housing and the amount of time required for clean-up is reduced by utilizing the method and template of the invention.

Abstract: For cleaning and/or painting the exterior of a ship hull while the ship is in dry dock, one or more staging devices are provided. Each includes a metal framework tower supporting a vertically movable elevator assembly that comprises a trolley, from which a variably laterally projecting platform is supported on articulated, cantilevered arms. Adjustable, non-porous shrouds enclose a volume of space between the outside of the tower and an increment of one side of the exterior of the ship hull, from above, fore, aft and outside. Cleaning and painting operations are conducted from the platform on the hull increment, and debris is removed from the dry-dock deck area enclosed by the shroud, after which the device is moved by crane, typically twenty feet (6.1 m), towards the ship's bow or stern. The shrouds are then adjusted so that a further hull increment can be worked on. The trolley and extension-retraction of the platform support arms are operated by electrohydraulic winch and hydraulic cylinders, respectively.

Abstract: A flotation scrubber for cleaning boat bottoms while in the water having a cylindrical tubular head floatable in the water surrounded by removable and replaceable scrubbing material and operated by an elongated tubular handle providing a reinforced substantially right-angle bend near one end of the handle, the other end of the handle having telescoping sections for adjusting overall length. In one form of the invention, the scrubbing material is in the form of a removable sleeve sitting tightly over the cylindrical tubular head and having outwardly projecting bristles and/or fibrous plastic scrubbing material. In another form of the invention, the tubular head may be turned selectively to either a position perpendicular to the handle or a position parallel to the handle.

Abstract: A process for protecting a rigid substrate against aquatic fouling comprises coating the substrate with an elastomeric undercoat as a 200 to 1500 micron thick layer and with a top coat of a room temperature vulcanisable silicone rubber. The elastomeric undercoat is generally harder than the room temperature vulcanisable silicone rubber foul resistant top coat and preferably has a Shore A hardness of 60 to 90 and an extensibility of 200 to 800%. The abrasion and tear resistance of the silicone rubber foul resistant layer is markedly increased by the use of the elastomeric undercoat.

Abstract: A method for cleaning the hull of a small boat, employing any of a number of portable hand-operated power tools in conjunction with any one of a number of common varieties of industrial grade, synthetic fiber scouring pads. The power driven scouring pad is applied to the surface of the boat hull using commonly available hand cleaners. According to the preferred embodiment of this invention, the most effective type of hand cleaner used on the portion of the boat hull below the water line is a pumice type hand cleaner. The type of hand cleaner that is most effetively used on the area of the boat hull above the water line is a cream type hand cleaner.

Abstract: A device is disclosed for in-water cleaning of a ship's hull. The device includes a body having inboard and outboard faces joined by a peripheral side, the faces having coaxial central apertures which are joined to form a central opening through the body, in which is mounted a hydraulic motor-driven propeller. The propeller maintains the device in contact with the hull during cleaning. There are detachable wheel modules recessed into the body to propel the device along the hull and a hydraulic motor-driven steering wheel to steer the device. Hydraulically driven cleaners are mounted on the inboard face to clean the hull. There is also a light recessed into the peripheral side to provide illumination to the hull. The device may also include an adjustable buoyancy chamber mounted on the body to provide sufficient buoyancy to the device to enable the device to effectively clean the hull at the waterline.

Abstract: A protective hull enclosure for a stationary boat floating in a body of water is disclosed. A floatation collar forms a first closed figure that approximates the shape of the perimeter of the hull at the surface of the water. The interior of this floatation collar forms a continuous open space. A shroud frame is formed of a continuous flexible rod, and forms a second closed figure also approximating the shape of the perimeter of the hull. A protective shroud of a flexible, water impenetrable, opaque material in the approximate shape of the hull of the boat has a hem formed therein into which the shroud frame is inserted and retained. The shroud and shroud frame are attached to the floatation collar. The shroud also includes pockets sewn into the material and support ballast weights.

Abstract: A system for inhibiting growth of barnacles and other marine life on the hull of a boat. The system includes a plurality of transducers or vibrators mounted on the hull and alternately energized at a frequency of 25 Hertz through a power source preferably the boat battery, and a control system. The system has two selectable operating modes one being continuous and the other being periodic. Also when the voltage of the battery falls below a predetermined level, transducers are automatically de-energized to allow charging of the battery after which the transducers are energized.

Abstract: A boat enclosure system for performing boat maintenance work on the water has a U-shaped floating dock forming a three sided enclosure with an opening at one end to enable boats to sail into and out of the enclosure. A bag of flexible, waterproof material is suspended around part of its periphery from the periphery of the dock to form a chamber below the dock, the remainder of the bag periphery extending across the open end of the dock so that it can be dropped into a lowered position allowing clearance below the water for boats to sail in and out of the chamber, and pulled up above the water level when a boat is in the dock to form a closed chamber below the water surface around the hull of the boat. The chamber is connected to a pump and filter unit for circulating water from the chamber through a filter and returning filtered water back to the chamber during maintenance work.

Abstract: A flushing device for supplying water to the cooling intake port of an inboard motor boat propulsion unit when the boat is out of the water and which has a suction cup adapted to cover the intake port and supported from the ground by a telescoping handle and provides a hose bib in communication with a garden hose.

Abstract: An apparatus for rinsing the interior of a marine engine that is attached to a boat immediately after the boat has been removed from a body of water. The apparatus is adapted to be affixed to the frame of a boat trailer in order to be carried by the boat trailer. A first reservoir holds as much fresh water as seems necessary for the cleaning job to be faced. An air tank holds compressed air and is placed in communication with the water reservoir at selected times in order to create a portable source of pressurized water. Appropriate hoses, wands, adaptors, cups, nozzles, etc., are provided for directing pressurized water that is released from the water reservoir so that the water may accomplish a flushing/rinsing job on a boat and engine and any accessories immediately after they have been removed from a lake, etc., while the engine is still hot and before any salty or foul water evaporates inside the engine.

Abstract: A floatation scrubber for cleaning boat bottoms while in the water having a cylindrical tubular head floatable in the water surrounded by a removable sleeve of scrubbing material and operated by an elongated tubular handle providing a reinforced substantially right angle bend near one end of the handle, the other end of the handle having telescoping sections for adjusting overall length.

Abstract: The current invention relates to an anti-fouling system for substances in contact with seawater which is constituted of the first conductive membrane that is coated on the outer side of the electric insulator mounted at the surface of the substance such as ships, marine structures in contact with seawater and is composed of thin sheets of metals having low specific resistance or metal oxide, spray-coated membrane, evaporated membrane or fused membrane, and the second conductive anti-fouling membrane having higher electric resistance than the first conductive membrane which is coated on the outer side of the above first conductive membrane and which is composed of the oxidation-resistant insoluble substance and the organic binder, and the power supply equipment that supplies direct currents flowing from the first conductive membrane through the second conductive membrane toward the electric conductor made of iron, copper or carbon located in seawater and opposite the second conductive membrane, owing to the co

Abstract: A drainable protective boat motor bag apparatus including a boot defining a bag for fitting over the propeller and stem of an outdrive of a motor mounted on the stern of a boat. The bag includes a channel extending from the mouth thereof to the closed end of the bag for receipt of an open ended hose such that, once the bag has been positioned over the stem, a hose may be inserted for pumping of residual from such bag. A tie string may be incorporated around the mouth of the bag for tying it to the stem and, if desirable, a separate protective sack may be included for covering the propeller blades to protect them from direct exposure to the bag itself.

Abstract: A fluid jet system for underwater maintenance of a ship hull is provided. The fluid jet system includes an open frame cart having a high pressure fluid nozzle manifold for cleaning and smoothing the submerged hull of the ship. One or more thruster assemblies are provided on the cart for deploying the cart through the water, advancing the cart along the hull and maintaining the cart in contact with the hull. Control of the thruster assembly and fluid flow manifold can be effected from either longitudinal end of the cart. Flexible fluid flow lines interconnect the cart to one or more remote sources of pressurized fluid so that the cart is independently operable. A system for deploying the cart is further provided and includes the necessary high pressure pumps, devices for hose deployment and retrieval, and diver supplies.

Abstract: The present invention relates to a new method of protecting the hulls of marine vessels from fouling. The inventive method includes the application of thin metallic films as an integral part of hull manufacturing processes. The inventive method also includes the use of various techniques for application of a film, structures that aid in the application of the film as well as for preventing impact damage to the film and hull. Also included are surface preparation steps relating to the film material as being performed prior to the film's integration onto a vessel hull.

Abstract: Apparatus for preventing re-growth of marine fouling on offshore marine structures comprises one or more flexible, multi-component collars adapted to surround a submerged structural support member of the marine structure. The apparatus is "powered" by the utilization of ocean forces in the form of waves, swells, tides and currents, whereby marine growth is prevented from re-establishing one the structural support member by virtue of the reciprocating motion of the apparatus about the member.

Abstract: The present invention relates to an improved method of protecting the hulls of marine vessels from fouling. The inventive method involves the application of thin metallic films to the hull of a boat. The inventive method includes the use of various techniques for application of the film, techniques for preventing the touching of dissimilar metals, techniques for insuring that dissimilar metals are insulated and isolated from one another, insuring that active or passive cathodic protection systems are not on the same surface plane as the attached films and other techniques. The specific materials which are applied to the vessel hull as well as their various parameters in the environment of the present invention are disclosed. Specific treatments to the thin metallic film to improve the adherence of these thin film hulls and adjacent films are disclosed.

Abstract: An apparatus and method for the elimination of marine fouling of marine mechanisms such as underwater fluid distribution emission systems. A grommet nozzle made of plastic materials containing an antifoulant and having a capability of easy installation forms a basic part of the apparatus. The grommet nozzle of the invention is formed of a polymer or a mixture of polymers containing a material toxic to calcareous marine organisms and capable of release of the toxic material into the environment at such a rate that the marine organisms grow extremely slow, yet the release rate is not sufficiently fast to be a toxic hazard to the surrounding environment.

Abstract: A device comprising a main body, a motor and drive wheels mounted on the main body, a partitioning member mounted on the main body and defining a pressure reduction space in cooperation with the main body and a wall surface, and a vacuum pump for reducing the pressure of the pressure reduction space. The device can suction-adhere to the wall surface by the pressure of an ambient fluid acting on the main body owing to the difference in fluid pressure between the inside and outside of the pressure reduction space and move along the wall surface by the action of the moving member. The partitioning member has an outside wall portion extending from its one end to a contacting portion contacting the wall surface and an inside wall portion extending from the contacting portion to its other end.

Abstract: A device comprising a main body and vibration generating means mounted on the main body. The vibration generating means imparts a force in a direction away from a wall surface and a force in a predetermined direction along the wall surface to the main body of the device. As a result, the main body is moved along the wall surface by the above force in the predetermined direction along the wall surface.

Abstract: A shroud for a marine propulsion system includes a waterproof shroud body fastenable to the transom of a boat to surround the outboard portion of the propulsion system. Locking and sealing mechanisms secure the shroud to the boat transom in water-tight engagement and a submersible pump is operable to remove water from the shroud body so that the porpulsion system is effectively in dry dock.

Abstract: A wall surface suction-adhering and moving device including a supporting frame and at least one suction-adhering and moving unit. The device moves along the wall surface while suction-adhering thereto. The suction-adhering and moving unit includes a rotating member rotatably mounted on the supporting frame, and a sealing member for forming a pressure-reduction space in cooperation with the wall surface and the rotating member. The sealing member has an annular base portion fixed to the rotating member, a cylindrical main portion extending from the base portion in a direction away from the rotating member, and an annular contacting portion to be kept in contact with the wall surface.

Abstract: A boat brush is disclosed for cleaning the submerged portion of the hull. The brush has a high degree of structural strength, adequate clearance during operation as no part of the brush frame will make unwanted contact with the hull, and the brush contacts all of the hull with a two position locking brush head.

Abstract: A substantially continuous copper-containing antifouling surface is formed on a marine structure by attaching thereto a composite comprising a plurality of strips of copper (or copper alloy) mounted side-by-side on a support. The composite may be adhered to the structure or it may, for example, be applied to an uncured neoprene coating on the structure which is subsequently cured.

Abstract: A system and a method for counteracting marine fouling of e.g. a vessel hull (1) are provided.Electro-mechanical vibration transducers (2, 3) are arranged in pairs adjacent to fixed (clamped) nodal lines (4) on said hull (1), and are driven in an inverted phase relationship in order to provide a water particle movement in a hull parallel direction right outside said nodal lines (4) in addition to the hull perpendicular relative movements right outside said transducers (2, 3).The invention also comprises a combination of the mechanical system above and a special surface coating which counteracts fouling from other organisms than those influenced by said water particle movement in the infrafrequency range.

Abstract: In order to displace a working tool at a constant speed over a surface having a random shape and orientation, particularly for cleaning, pumicing, painting or decorating the outer surface of an aircraft, an autonomous moving body with a special design is used. This moving body comprises two attachment assemblies (10,12) each equipped with attachment members (30,48) which can be moved towards and away from the surface, and a tool holder assembly (14), said three assemblies being able to move with respect to the surface in a given direction. Control means supported by the tool holder assembly (14) ensure both the advance at a constant speed of said assembly with respect to the attachment assembly (10,12) fixed to the surface and the advance in the same direction and at a higher speed of the other attachment assembly, the two attachment assemblies (10,12) being in turn fixed to the surface without stopping the tool holder assembly (14).

Abstract: A device comprising a main body and vibration generating means mounted on the main body. The vibration generating means imparts a force in a direction away from a wall surface and a force in a predetermined direction along the wall surface to the main body of the device. As a result, the main body is moved along the wall surface by the above force in the predetermined direction along the wall surface.

Abstract: The invention provides a method of underwater painting and a device for implementing same, the paint application brush comprising a rigid axial duct driven in rotation for feeding the paint, from which radiate a plurality of flexible ducts and in which the support for the bristles of the brush is secured to said rotary rigid duct by a connection comprising a flexible element allowing a certain free axial movement of said support.

Abstract: A cleaning apparatus for use under water, particularly for cleaning vertical surfaces which are fouled by marine organisms. One or more nozzles (19a-c) for spraying water at high pressure at a surface to be cleaned are arranged on a rotary disc-shaped unit (14)where the rotation axis is intended to be generally perpendicular to the surface which is to be cleaned. The nozzles are obliquely located in a circular plane so that the rotating unit (14) can rotate. Beyond the periphery of the rotating unit (14) there is a casing (12) which forms an annular chamber (13) with an outlet which is at least partly directed away from the surface which is to be cleaned. The annular chamber (13) is formed from two generally cylindrical or truncated conical casing units (20, 30) which are positioned at a radial distance from each other with their internal ends concentric with respect to the nozzle holder (11).

Abstract: A device comprising a main body, a motor and drive wheels mounted on the main body, a partitioning member mounted on the main body and defining a pressure reduction space in cooperation with the main body and a wall surface, and a vacuum pump for reducing the pressure of the pressure reduction space. The device can suction-adhere to the wall surface by the pressure of an ambient fluid acting on the main body owing to the difference in fluid pressure between the inside and outside of the pressure reduction space and move along the wall surface by the action of the moving member. The partitioning member has an outside wall portion extending from its one end to a contacting portion contacting the wall surface and an inside wall portion extending from the contacting portion to its other end.

Abstract: Presented is a device for scrubbing submerged surfaces that have become fouled by marine growth or other contaminants. The scrubbing device includes a base member to which may be attached various types of abrading devices and a handle for reciprocating the scrubbing device. A vane pivotally mounted on the base interacts with the water in which the device is submerged, when reciprocated, to impose a component of force on the scrubbing device that drives the scrubbing device against the surface to be scrubbed.

Abstract: A robotically operated device uses an ultrasonic transducer for the cleaning of ships' hulls. The device may also be used for spraying paints or other chemicals on the sides of ships' hulls. The device includes a housing having an open face adapted to confront a ship's hull and apparatus disposed in the housing for impinging a flow of fluid through the open face onto the ship's hull. An ultrasonic transducer is disposed in the housing for impinging a flow of ultrasonic energy through the open face onto the ship's hull. Apparatus connected to the outside of the housing retains the housing on the ship's hull and moves the housing on the ship's hull. In an additional embodiment, apparatus for spraying paint or other chemicals on a ship's hull is disposed in the housing.

Abstract: A flexible cylindrical boot with a plastic reinforced opening containing multiple nylon rivets for connection to one or more nylon cords is mounted around the shaft of a small outboard motor. A telescopic handle attached to the reinforced opening guides the boot around the motor shaft after a garden hose is attached to a connector integral with a bottom of the boot. Fresh water from a faucet fills the boot and the motor is run in an idle condition to permit salt water flushing of the coolant system. The brackish water is then siphoned from the boot for dry storage of the motor in an upright position attached to the transom or lazarette of a boat.

Abstract: A method is disclosed to provide a substantial reduction of marine corrosion in sea water by micro and macro biofouling. An alternating current is generated of a strength and frequency sufficient to shock marine biofouling organisms and sufficient to upset the normal behavior patterns of the marine biofouling organisms entrained in the sea water passing around or through the structure. A second combination of alternating and direct currents are generated between two strategically located electrodes whereby to release into the water around or within the structure controlled amounts of chlorine ions and copper ions to produce an environment actively hostile to potential marine biofouling organisms. The effect of releasing copper ions and chlorine ions simultaneously is that they co-operate in a synergistic manner that greatly enhances the biocidal effect on marine organisms over and above the effect of the separate use of copper ions and chlorine ions.