Abstract: A tank system may be conventional and fixed, or mobile, such as a fracking fluid or other tank trailer. A drain port thereof is fitted with an adapter connecting a snorkel system to drain liquids from near the top of the liquid level in the tank. A snorkel head at the extreme distal end of a tube near the longitudinal center of the tank is suspended by a system of buoys. A flow field controller plate resists formation of vortices near the snorkel head, so it can operate as near the surface as possible, withdrawing the highest grade oil efficiently. At its exit, the proximal end of the tube drains oil through an inner conduit of an adapter at a penetration in the wall of the tank. The adapter forms an annulus around the inner conduit draining tank bottoms directly from the tank.

Abstract: A waterside leisure facility is disclosed which comprises an enclosure, covering and surrounding an area of land mass, an enclosed portion of a larger body of water, the land mass having a shore front adjoined to the portion of the body of water, the enclosure further comprising a dividing wall separating the enclosed portion of water from the remaining body of water a transparent roof, joined to the dividing wall and surrounding the area of land mass, to substantially separate air in the enclosure from ambient air outside the enclosure, while letting light through the roof, water treatment means arranged to maintain the water in the enclosure at a controlled temperature, while circulating water from outside the enclosure through the enclosure; and air conditioning means arranged to maintain the ambient air inside the enclosure at a controlled temperature and/or humidity.

Abstract: An air intake device for a submarine comprises a first fixed member connected to the submarine hull and a second member which is telescopically movable relative to the first member to rise up with an upper end of it above the water's surface to allow air to be taken in from the atmosphere during navigation of the submarine at periscope depth, the movable member mounting at its upper end a radar device designed to emerge from the water together with the selfsame movable member.

Abstract: A shaft seal pressure compensation system for an underwater device such a remotely operated vehicle powered by motor driven thrusters where the shaft of the motor extends from a motor housing into the surrounding water and is sealed by a shaft seal by automatically supplying air to pressurize the thrusters to balance the internal pressure of the thrusters to match the ambient water pressure. The air is supplied by a variable volume container that responsive to a pressure differential between the external ambient pressure and an internal pressure within the variable volume gas container for adjusting the volume of the variable volume gas container so that the internal pressure equals the ambient pressure, and thus balancing the system.

Abstract: A redundant cooling device, for an electrical submarine drive motor, includes a first cooling circuit and a second cooling circuit, by which thermal energy may be removed from the electric submarine drive motor. A high degree of operational security and redundancy may be provided, whereby the coolant in the first cooling circuit and the second cooling circuit flow counter-currently through a stator cooling circuit in the region of the electrical submarine drive motor.

Abstract: The invention concerns the structure of a “SUBMERGED UNDERWATER OBSERVATION BOOTH”, including a floating station on water surface, and a piping system to convey fresh air and power into the SUBMERGED BOOTH. The SUBMERGED BOOTH provides an atmospheric environment with all the necessary equipment and facilities to a person doing underwater observation or research. The SUBMERGED BOOTH can travel underwater in both vertical and horizontal directions. The SUBMERGED BOOTH is designed either in the shape of a cylinder with two half-spheres at both ends, or in the shape of a sphere, with clear plastic wall all around, to provide the observer with maximum viewing angle. The invention aims to provide a system for a wide application area and many purposes of use under water such as: exploration, tourist, research, maintenance, repair, etc. . . .

Abstract: An emergency air system for kayaks is disclosed. The emergency air system can be coupled to a kayak skirt or may be coupled to the body of the kayak. The air system includes a breathing tube which includes a mouthpiece. Preferably, the breathing tube is secured to the kayak skirt or the kayak body with a pair of opposing, flat washers.

Abstract: The method apply charge of air to the cargo hold space of the underwater transportation ship or submarine, the pressure hull of cargo hold can be replaced by non-pressure type to achieve lower cost to transport dry cargo and solve strength/seal problems raised by cutting large hatch under water. By adopting the method, various new types of air-charge cargo submarine (ACS) and underwater construction can be designed. The dive depth of ACS is not large. The pressure and volume of the charged air are limited. Therefore the problems of safety, equipment and technology can be easily solved.

Abstract: An emergency power generation system mounted in the aft portion of a submarine includes a gas turbine arranged to drive a generator and an exhaust gas outlet in the rudder structure of the submarine to reduce submarine construction cost and avoid contamination of the fresh air supply for the submarine.

Abstract: A watercraft having positive static buoyancy is provided which is operable both as a hydrofoil and submersible vessel. It is generally shaped in the form of a dolphin or porpoise, with the equivalent of fins acting as both navigation and attitude control mechanisms. Pectoral or forward fins provide hydrofoil struts when manipulated into one position and then are operable as diving planes when displaced into an alternate position. A dorsal fin provides supplemental rudder control. A pair of flukes or rear fins provide for pitch and/or dive control while the vessel operates in the submerged mode. These fins and a propulsion system are either manually or computer controlled by way of hand held joysticks and foot rudders. Submerged operation is achieved with an internal combustion motor by including an air compressor and air storage tank(s) with an air intake arrangement having automatically operable devices serving to open and close an air intake in response to exposure to water.

Abstract: A twin-hulled ship is powered by a gas turbine engine in each hull, the engine being located near the waterline in vertical alignment with a position outboard of the superstructure's internal sidewall, but preferably inboard of the superstructure's external sidewall. This is facilitated by the outward bulge of the hull relative to the superstructure's external sidewall. An air inlet filter bank is mounted in the side of the superstructure sufficiently far above the waterline to avoid swamping. Air intake ducting leads from the filter bank to the engine, and exhaust ducting leads from the engine to an exhaust outlet at a higher level than the filter bank. This arrangement enables intrusion of intake and exhaust ducting into the main loading deck space to be avoided while minimizing deviation of intake and exhaust ducting from a straight line path.

Abstract: A diving boat wherein an air tank, water tank and navigating apparatus are provided, air within the air tank is fed into the watertight boat body and excess air produced thereby is discharged into water outside the boat body through an automatic balance type pressure regulating valve so that the air pressure within the boat body may be kept substantially the same as the water pressure outside the boat body.

Abstract: An underwater rescue device which delivers fresh air into the interior of a submerged vessel by puncturing a hole through the body of the vessel and forcing fresh air through the new opening. The rescue device provides for the use of an elongated housing having an internal passageway which utilizes a means for puncturing an aperture into the body of a submerged vessel. The means for puncturing an aperture may take the form of a dart which is projected by a sliding weight hammer through the body of the vessel. Once an opening is made into the body of the vessel, air is supplied through the internal passageway through the opening into the vessel. The device further provides a sealing member for the created opening for use during the delivery of fresh air.

Abstract: A pressure equalizing cabinet for instruments intended to be submerged in water is described. The device includes a source of compressed air and a piston in a cylinder. One side of the piston is in communication with the interior of the cabinet and the other side is in communication with the ambient. The piston also mounts a needle valve at a port in a conduit between this source of compressed air and the cabinet interior. When the pressure in the ambient exceeds the internal pressure, the piston is displaced to admit a flow of compressed air into the cabinet. When the pressure in the cabinet exceeds the ambient the piston closes the valve. A bleed valve is also provided for venting excess pressure within the cabinet during ascent.

Abstract: A self-propelled submersible vehicle which comprises a hull and a cockpit defined within the hull, a transparent dome on the top of the hull formed with the cockpit and enclosure walls defining the cockpit within the hull. The cockpit is open ended at the bottom thereof, and the hull is non-watertight. Compressed air tanks are provided in the hull, and these tanks communicate with a regulator valve which provides a constant flow of air into the cockpit forming an air bubble providing a breathable section of the cockpit for the passengers. An air exhaust device is incorporated with the regulator valve assembly for controlling the volume of the air bubble within the cockpit in response to the water level within the cockpit.

Abstract: A plurality of tanks situated in the vessel, each of the tanks housing a quantity of air under pressure for use in the system. Each tank connected in series would supply air via a line system to each living quarter in the vessel, perferable at two points along opposite walls of each quarter. There would be further provided an automatic switching mechanism, for example, a pendulum switch, so designed so that when the vessel would tilt beyond a "point of no return", the switch would automatically activate normally closed valves to open and allow air into the lines of the system. In addition, there could be provided a air port within each sleeping quarter to be equipped with a valving mechanism on the entrance port into the quarter so that the valving mechanism could either be automatically or manually activated to allow the pressurized air into that particular quarter.

Abstract: An apparatus for extracting oxygen from sea water in which a plurality of hollow gill members carry on oxygen extracting heme and are positioned within a diffuser. A flow of oxygen bearing liquid, such as sea water, passes through the diffuser and around the gill membranes. The gill membranes are angled with respect to the flow of sea water. The diffuser has a reduced section intake and outlet, and is divided into a number of channels, with the result that the drag force is reduced while maintaining adequate oxygen extraction. Propellers compensate for drag force losses.

Abstract: An underwater cruise device is disclosed which is mounted to a vessel by a vertical telescoping boom. The device includes a diving chair mounted to the vertical boom which can be selectively submerged during diving operations or completely withdrawn from the water for long distance, surface cruising. A concave, transparent shell canopy is mounted to the diving chair, forming an enclosed upper cavity which can contain a breathable gas ambient to surround the head of the seated diver. Controls are provided on the diving chair to enable the submerged diver to control the extension of the vertical boom into the water and the propulsion and steering of the vessel itself. Radio and television communication with the surface can be provided so that the diver can monitor surface conditions while cruising in the submerged diving chair.