Abstract: A device is disclosed for temporary plugging of holes in ship hulls. The device has a shaft with a spring-loaded rod disposed therein. At one end of the shaft is a cylinder housing a piston that is connected to the rod for movement within the cylinder. The cylinder has pivoting levers that are movable via the piston between a stowed position, in which the levers are parallel to the shaft, and a deployed position, in which the levers are perpendicular to the shaft. A seal is connected to the levers. A second cylinder is slidably disposed along the shaft, and has a plurality of guide arms connected thereto. In operation, the device is pressed into the hole so the levers and cylinder housing are outside the ship. The spring is activated causing the rod and piston to move, which deploys the levers and unfolds the seal. Inrushing water forces the levers and seal to engage the outside of the hull surrounding the opening, inhibiting further flooding.
Abstract: The invention relates to a watercraft, particularly a river boat, with a hull for receiving useful devices and with propulsion units for generating a driving force and which are located on the hull. The watercraft according to the invention is characterized in that guiding elements are provided in the bow area on the underside of the hull, which have a vertical, forwardly tapering wedge shape, that the propulsion units in the bow area are set back from the wedge-shaped guiding elements, that between the guiding elements is provided a partial area of the hull constructed in the form of a horizontal wedge and that the propulsion units are pivotably mounted.
Abstract: An inflatable plug within a fragile streamlined cover attached to a rigid lance tube is pushed through a leakage hole to plug it on an upstream end by being inflated with pressurized fluid conducted through the lance tube to rupture the fragile cover and position the plug against the wall sealingly covering the upstream end of the hole.
August 23, 2001
Date of Patent:
April 8, 2003
The United States of America as represented by the Secretary
of the Navy
Abstract: The invention relates to a spillage protection system for a storage vessel in the event a breach of the hull occurs. The system comprises sheets of lath work panels extending from longitudinal and transverse supporting members of the vessel hull for forming sub-compartments therein. The sheets of lath work panels are comprised of a plurality of apertures therein for providing characteristics of strength and porosity to the structure. The system further comprises a distribution system extending through the hull of the vessel and into each of the sub-compartments. The distribution system originates at a reservoir which supplies a foamable cast-cure plastic material to the distribution system and effectively delivers the foamable cast-cure plastic material to a sub-compartment adjacent to an area of the hull experiencing the breach.
Abstract: An open celled plastic foam treated with a polymer which is adsorbed in the surface of the foam and causes the polymer adsorbed foam to become an oil wick and to be impervious to water. The polymer adsorbed foam when the cells of the foam are saturated with oil exhibiting a density heavier than oil and lighter than water.
Abstract: This invention relates to flexible internal liners for reducing the amount of oil spilled by oil tankers due to groundings, collisions, and other major accidents. The liner comprises a flexible oil-resistant impermeable plastic or rubber, which preferably is reinforced by steel mesh or woven aramid fibers. In one embodiment, a independent segment is provided in each bay between two stiffeners. The horizontal edges of each liner segment are coupled to the stiffeners, near the ends of the stiffeners, to provide enough material for the liner to be pushed inward a substantial distance if a collision or grounding occurs. The edges can be secured by detachable clamps; this will provide watertight seals during normal operation, while allowing the segment to be detached and opened when the hull is inspected.
September 21, 1992
Date of Patent:
August 16, 1994
Philip E. Ross, Leonard T. Stanton, Timothy H. Layne
Abstract: A shock absorbing cushioning mat designed to protect the compartment liner of a liquid or oil carrying sea going vessel from tear or puncture by steel from the vessel's structure being forced inward by the external pressure created by grounding or collision of a bulk liquid carrying sea going vessel, while providing a firm yet flexible foundation for the compartment liner to eliminate or greatly reduce the potential for spillage of the cargo. The present invention also addresses the problem of compartment liner fasteners coming apart due to the continued motion of a sea going bulk liquid carrying vessel graveling across a body of water.
Abstract: An apparatus for sealing a hole in a ship's hull including a plug having a plurality of longitudinally extending inflatable tubes having two ends, with the tubes arranged parallel and adjacent to each other. A plug delivery device is provided for placing the tubes partially through the hole in the hull. The tubes are independently inflated so that the tubes inflate and seal the hole.
Abstract: A protective composite liner for installation inside a vessel, such as a supertanker, is proposed with an outer layer of high strength fibers, a middle layer of flexible, high strength, resilient film material, and an inner chemical resistant layer. Means for anchoring the protective composite liner and sensor means for detecting a leak are further provided for use with the liner of the present invention.
Abstract: An apparatus for temporarily sealing a hole in the hull of a boat comprising an inflatable seal portion disposed adjacent the outer surface of the hull, means for inflating said seal portion and a structural support portion disposed adjacent the inner surface of the hull to maintain said seal portion in intimate contact with the hull of the ship to prevent the flow of water therethrough.
Abstract: A rupture in a portion of the cargo hold area of a liquid-bulk carrier cargo ship is closed by inserting a flexible, liquid-tight bag through a hatch into the hold, then pumping fluid contained in the hold back into the bag to deploy the bag. The pumping is continued until the bag has deployed far enough to cover the rupture. Such covering prevents further leakage of the cargo out of the hold. The preferred form of the invention includes the use of the ship's pumping system; however, alternative forms of the invention include self-contained units. The preferred form of the bag includes Spectra material.
Abstract: An on-board oil spill prevention and recovery system for an oil transporting vessel. The system includes a pillow storage container which releasably houses a plurality of sorbent pillows. The container is fixedly attached to said vessel above a hole cut in the deck of the vessel above an oil holding tank thereby permitting the pillows to be selectively released to the interior of the holding tank. The system further includes a sorbent boom selectively deployable in the waters surrounding the vessel.
Abstract: A portable device for closing a breach in a boat hull from the inside or the outside which includes an inflatable shallow dome sortable in a cylindrical form and automatically inflatable by the use of a self-contained cartridge to cause expansion into a non-buoyant shallow dome which can seal against a hull breach and enable a damaged boat to reach port.