933results about "Vessel stability improvement" patented technology

A trim tab control system adapted to adjust trim tabs to optimize the velocity of a water vessel. The trim tab control system is adapted to have a tilt sensor and a velocity sensor in communication with the microcontroller where the microcontroller records the position of the trim tabs based on trim tab adjustments that the trim tab control system initiates, as well as trim tab adjustments initiated by the helmsman of the water vessel.

A boat with a controllable wake, including a boat hull with a propulsion system. A wake controlling device includes first and second plates with a bottom surface which is convexly curved between their forward and rear ends, and first and second mounts secured to the port and starboard sides, respectively, of the boat transom and securing the forward ends of the plates for pivoting about axes which are behind the boat transom and generally lie parallel to the plane of the aft boat bottom adjacent the first and second mounts. Plate controls extend between the transom and the plates to adjustably pivot the plates relative to the mounts. A plurality of generally triangular fins extend from the plates at substantially right angles to the plate bottom surfaces and extend at substantially right angles from the axes. Side plates are on the lateral edges of the first and second plates.

A boat trim tab system having an automatic controller for positioning trim tabs to perform user selected preset functions or maintain previously used positions in response to real time operating conditions. The system is intended to be a stand alone system that is installed on a boat using a master control module to operate the trim tabs and a manual keypad to provide a user interface to the master control module. The system gathers real time data from a variety of onboard sources and uses the data to determine the optimal position of the trim tabs to enhance boat performance.

A boat control system includes trim tabs mounted on the lower transom of a boat, with an electric trolling motor attached to each tab. The control system controls positioning of the trim tabs within a trim range and within a troll range. If a main engine ignition switch changes from off to on while the trim tabs are within the troll range, the control system automatically moves trim tabs positions out of the troll range, and disables the trolling motors.

The invention provides a portable ship water gauge automatic detection and identification method based on machine vision. Video data of a ship water gauge in the overwater environment are used as a main research object, the machine vision and the image processing theory are used as main means, so as to detect and identify the scale of the ship water gauge and perform statistical analysis on detection results of continuous video frames, and finally, a ship draft value is obtained. According to the system, the relatively objective ship draft value can be obtained in accordance with image data, the detection results are visually displayed, the workload of ship draft detection personnel can be reduced, the measurement stability and accuracy of the ship water gauge are increased, and an objective measuring means and reference data are provided for determining ship draft.

A trim tab (18, 204) hinged (19) at the bottom edge of a boat transom (12, 179) is rotated into a position below the boat when the drive (58, 186) is in a lowest-most trim position, and is raised up, when the drive is above a selected pickup trim position. A push tube (58) connected to the motor (16) operates a push rod (49) and a trim tab (18). A push bar (96, 97) is moved by the drive, causing pieces (104, 105) to rotate trim tabs (18a). A fluidic slave cylinder (142) is operated by a master cylinder (134) or by a pump (148) responding to a position detector (150). Levers (164, 167) may be connected by a cable (155). A hydraulic master cylinder (195) is disposed on a part (186) of an outdrive that rotates for trim, its cylinder rod (200) contacting a fixed part (184), driving fluid to a slave cylinder (201) mounted on a fixed part (183) with its piston rod (202) moving a trim tab (204).

An adjustable surf wake system enhances a wake formed by a watercraft travelling through water. The system may include a flap for deflecting water traveling past the stern of the watercraft, and/or a positioner operably connected to the flap for positioning the flap relative to a longitudinal axis of the watercraft between a neutral position and an outward position. Positioning a port flap in its extended position enhances a starboard surf wake, and positioning the starboard flap in its extended position enhances a port surf wake.

A hydrofoil unit for attaching to the stern of the hull of a boat. The unit includes a mount that mounts to the stern of the hull of the boat, a hydrofoil that is pivotally attached to the mount, a pivot assembly that pivotally attaches the hydrofoil to the mount, and apparatus for pivoting the hydrofoil relative to the mount. In one embodiment, the apparatus is automatic and includes an hydraulic cylinder that is pivotally attached to the transom of the boat and a strut that is pivotally attached to the hydraulic cylinder and the hydrofoil. In another embodiment, the apparatus is manual and includes an upper threaded rod that is pivotally attaching to the transom of the boat, a turnbuckle that is attached to the upper threaded rod, and a lower threaded rod that is attached to the turnbuckle and the hydrofoil.

A multiple trim modulation system for efficiently and simultaneously controlling multiple trim devices upon a marine vessel. The multiple trim modulation system generally includes a plurality of trim devices movably mounted to a watercraft and a controller adapted to control the plurality of trim devices. The controller includes a plurality of adjustment modes, wherein each of the plurality of adjustment modes moves the plurality of trim devices in a simultaneous manner. The plurality of trim devices either move towards a similar direction or move towards an opposing direction depending on a corresponding mode of the plurality of adjustment modes.

An adjustable surf wake system enhances a wake formed by a watercraft travelling through water. The system may include a flap for deflecting water traveling past the stern of the watercraft, and/or a positioner operably connected to the flap for positioning the flap relative to a longitudinal axis of the watercraft between a neutral position and an outward position. Positioning a port flap in its extended position enhances a starboard surf wake, and positioning the starboard flap in its extended position enhances a port surf wake.

A method for controlling a marine vessel having first and second steering nozzles and first and second trim deflectors comprises generating at least a first set of actuator control signals and a second set of actuator control signals. The first set of actuator control signals is coupled to and controls the first and second steering nozzles, and the second set of actuator control signals is coupled to and controls the first and second trim deflectors. The acts of generating and coupling the first set of actuator control signals and the second set of actuator control signals result in inducing any of a net yawing force, a net rolling force, and a net trimming force to the marine vessel without inducing any other substantial forces to the marine vessel by controlling the first and second steering nozzles and the first and second trim deflectors. Also disclosed is a system for controlling a marine vessel.

The real-time measuring device and measuring method for the draft of a navigable ship according to the present invention are composed of a detection door, an automatic lifting control device for the detection door and a data acquisition and processing device; the detection door is a mounting frame, and the detection door is composed of The automatic lifting control device controls it to reach a predetermined depth position below the water surface, and is placed below the water surface that the navigable ship will pass through. An array of ultrasonic ranging sensors is installed on it, and the front of the ultrasonic ranging sensor is upward; The distance sensor array measures the vertical distance from the bottom surface of the entire ship to the detection door mounting frame, and all the measurement data constitute a data set C; then according to the installation depth H of the ultrasonic ranging sensor array on the detection door mounting frame, the water depth at the bottom of the ship will be obtained The data set D, where D=H-C; then find the maximum value in the data set D, which is the draft Dmax of the navigable ship, that is, Dmax=MAX(D).

Column-stabilized floating offshore platform structures (10) having spaced apart buoyant main vertical columns (11) joined at lower ends by horizontal lower truss members (13) in a pin connection and joined at upper ends by a buoyant deck mount structure (14), and/or by horizontal truss members, to form a moment connection. A buoyant keel tank (15) having a central moon pool (15A) can be retracted and extended relative to the main columns between a retracted transport mode and an extended operating mode. Ballast of the columns and keel tank can be adjusted to raise or lower the center of gravity of the structure with respect to its center of buoyancy to stabilize the structure and compensate for variable or fixed loads, deck payloads, environmental conditions, and operational and installation stages. A three-sided deck mount allows on-site float-over deck installation.

A method is described for providing an alert when the motion of a ship indicates a potential of sloshing damage from liquid cargo being transported by the ship. The method includes calculating, with a processing device, a natural period for the tanks holding the liquid cargo based on the configuration and fill levels of the tanks, receiving, at the processing device, data describing the actual or predicted motion of the ship with respect to three orthogonal axes, determining, with the processing device, a proximity of the natural period of the tanks to a period defined by the actual or predicted motion of the ship, and providing an alert to a user if the proximity in periods is within a threshold value.

A watercraft includes a plurality of devices, a central controller, and a display device. The central controller is programmed to execute centralized control of the devices. The display device includes a touch panel function. The display device is configured to communicate with the central controller, and to display information regarding watercraft in a Graphical User Interface (GUI) format.

A marine drive has a break-away mount mounting first and second sections of the drive and breaking-away in response to a given underwater impact against the second section to protect the first section and the vessel.

The invention relates to the technology of ship draught detection, in particular to a method and a system for detecting the over-draught of a ship. The detection system comprises an underwater detection subsystem, an overwater detection subsystem and a data processing subsystem, wherein the underwater detection subsystem comprises a lifting bracket, a laser array, an underwater camera, wherein the laser array at least comprises a first laser transceiver which is arranged on the lifting bracket, and the transmitting direction of the first laser transceiver is horizontal; the overwater detection subsystem comprises a power mechanism, a CCD camera, a GPS receiver and a laser light source, wherein the power mechanism is used for controlling the operation of the lifting bracket; and the data processing subsystem is electrically connected with the underwater detection subsystem and the overwater detection subsystem, and when the first laser transceiver receives reflected laser, the data processing subsystem alarms. In addition, the detection system can perform dynamic detection on a detection ship in real time and improve the detection efficiency, and also can calculate the draught depth of the ship by using an image processing algorithm and improve the detection accuracy.