摘要:
A water craft having a bow and a stern including an engine of sufficient thrust to create an enlarged wake at the stern of the boat as the boat moves along the surface of a body of water. The water tight compartment is positioned to carry water below the water line and essentially astride the centerline or keel of the boat. The compartment is adapted to contain liquid water in an amount sufficient to enhance or equalize the size of the boat wake. The compartment extends from a point forward of the transom and engine, and extends to a point forward of the midpoint between the bow and the stern, and terminates short of the bow while serving to exert downward force on the bow against the water when the water craft is underway and the compartment carries water.
摘要:
A ballast-water treatment system is provided. An ozone generator is operated by a supply of voltage, which is regulated by a voltage controller. Ozone is provided to a ballast tank through an ozone-transport system. The system may include a pressure generation system to regulate a flow pressure such that the flow pressure is substantially ambient at an exit end of the ozone generator and has a positive pressure when reaching the ballast tank.
摘要:
There is provided a tanker for carrying petroleum products, including crude oil, chemicals or other potentially environmentally harmful materials, having an inner hull and an outer hull and where the void between the inner hull and outer hull at the bottom of the tanker is at or near the minimum spacing required by U.S. and international regulations. The tanker has side tanks for holding ballast, which extend upward from near to or above the ballast water line. The dimensions of each side tank are large enough to hold a sufficient volume of ballast water to keep the tanker in ballast condition meeting U.S. and international regulations for ballast draft. The cross-sectional shape of the side tank is substantially rectangular in the preferred embodiment, although other shapes to most efficiently utilize the space available on the tanker ship also can be used. The tanker also has one or more cargo tanks located inside the inner hull, which tanks also may be substantially rectangular in cross-section and arranged to meet U.S. and international regulations for oil outflow. The void in the bottom of the tanker is not used for cargo or ballast and remains dry.
摘要:
There is disclosed a device on a platform, especially a semi submersible platform (10), comprising a number of pontoons (16), and a platform deck (12), which is connected to the topside surface of the pontoons by way of a number of columns (18, 20) or legs. The device is characterized in that in connection to the topside surface (34) of each pontoon (16), upward extending wall sections (26) are formed so that an upward open chamber (28) is defined.
摘要:
A method and apparatus for replacing existing ballast water in the ballast tanks of a ship while the ship is underway in the sea utilizes a seawater inlet port in the bow of the ship that admits water when the ship is moving to produce a pressure that is greater than the pressure of the ballast water that is to be replaced, with the incoming seawater from the inlet port being directed into the bottom portion of the ballast tanks where it rises to displace the existing ballast water from outlet ports located in a top portion of the ballast tanks.
摘要:
The present invention relates to the use of deactivatable biocides in ballast water aboard a vessel. The present invention relates to methods of limiting the transfer of one or more life forms via ballast water comprising mixing an effective amount of the deactivatable biocide with the ballast water and irreversibly deactivating the deactivatable biocides before or upon discharge of the ballast water.
摘要:
An amphibious catamaran is characterised by the inclusion of two spaced apart hulls (1,2); a framework (3) supporting the hulls; a motor (14) supported by the framework; a drive unit (21) for water propulsion actuated by the motor (14) in use; at least (3) land wheels such as (40-44); two sub-frames (44, 45), each supporting one or more land wheels (40-44); height adjustment means (46; 47) enabling in use one sub-frame, and preferably both sub-frames (44, 45), to be moved with respect to the framework (3) from a position where the land wheels (40-44) stably support the catamaran for travel on land, with the hulls (1, 2) clear of the land, and a position where those of the land wheels (40-44) associated with the moveable sub-frame are raised upwardly above the bottoms of the hulls (1, 2); drive means (not shown but including motor (14)) for land propulsion coacting with one or more of said land wheels (40-44); steering means (not shown) for steering the craft on water and on land; and an input station (59) for any person who is to operate the craft on water or on land, or for receiving remote signals to control the operation in use, or both purposes.
摘要:
A sea chest cover for providing access to the sea chest of a ship. The sea chest cover includes both a cover element and a liner element received within the interior of the sea chest and is fabricated essentially entirely of one or more viscoelastic materials, preferably either polyethylene or polyurethane. Materials can be also made of copolymers, which may be laminated, and compression molded or portions may be blow molded. Fabrication of the sea chest cover from a viscoelastic material reduces or eliminates corrosion and erosion problems. It also minimizes marine organism and ice build-up. The result is a reduction in the expense of associated with maintaining such covers. The sea chest cover can also include an additive to reduce bacteria and algae growth and be irradiated with gamma rays for increased strength.
摘要:
A ballast water monitoring and reporting system for seagoing vessels includes a sensor for monitoring a selected parameter of a ballast water system component and transmitting an electronic signal indicative of a condition of the parameter, a distal acoustic modem for receiving the signal from the sensor and for transmitting an acoustic signal equivalent to the electronic signal received, a shipboard metal structure extending substantially throughout the vessel and adapted to carry the acoustic signal, a proximal acoustic modem adapted to receive the acoustic signal from the metal structure and to transmit an electronic equivalent thereof, and a shipboard data acquisition computer adapted to receive the electronic signal from the proximal acoustic modem and to generate at least one of a display, a report relative to the selected parameter, and a recording of data relative to the selected parameter.
摘要:
The balancing device makes it easy to balance low and medium tonnage ships without needing to use high power. It comprises mainly one or several trains (40) of moving masses (41) mounted on a U track of which the side branches (50) are parallel to the side walls of the ship, the central segment (52) being perpendicular to the centre line of the ship. Two drive wheels (60) placed inside the turning points of the U enable driving of the train (40) of moving mass (41). Application to low and medium tonnage ships.