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| Number | Title | Issue Date |
| 7040157 | Variable depth automated dynamic water profiler A winch-based system is used to raise and lower a hydrological probe into a water column to automatically dynamically obtain measurement data of a water column at incremental depths over selected time intervals. The winch-based system can be powered by a relatively ... | 05/09/2006 |
| 6904864 | Controlled lifeboat deployer A control system to control the descent of a seafaring vessel, such as a lifeboat, into water is disclosed herein. The control system, and an accompanying method, control the descent speed of the seafaring vessel to minimise the possibility of setback after splashdo... | 06/14/2005 |
| 5808741 | Method for remotely determining sea surface roughness and wind speed at a water surface Transmitted signals are used to remotely assess sea surface roughness and nce wind speed at a water surface. A signal is transmitted from a signal source as it moves either through air or space. A land- or sea-based antenna receives the signal directly fr... | 09/15/1998 |
| 5644077 | Wave-powered ocean profiler An ocean profiler that utilizes ocean wave energy to provide power for repeated ascent and descent of an oceanographic instrument. In one embodiment the instrument assembly is provided with either positive or negative buoyancy such that the instrument can... | 07/01/1997 |
| 5633460 | Ocean environment monitoring system and method for controlling the same An ocean environment monitoring system has a sensor inside a sensor chamber provided with a pair of electrodes at the inlet port of the chamber and a pump for introducing seawater inside the chamber. When a voyage is applied to the electrodes, seawater is... | 05/27/1997 |
| 5001926 | Device for determining the vertical distance between two elements at unequal heights A device for measuring the pressure difference between the two ends of at least one flexible tube connecting together the positions occupied by two elements. In a preferred embodiment, to a summing circuit are applied the signals delivered by two differen... | 03/26/1991 |
| 4988885 | Remote optical wave measurement sensor A submerged small angle field-of-view optical radiometer which can passively measure ocean surface wave heights, characteristics, and statistics remotely. The mechanism involves measurement of a varying underwater radiant light field and correlation of th... | 01/29/1991 |
| 4986121 | Apparatus for measuring the vertical motion of a floating platform An apparatus and method for measuring the vertical motion of a floating platform e.g. a survey vessel, caused by wave action. The apparatus includes a sensor having three accelerometers (11,12,13) arranged on mutually perpendicular axes (Ax,Ay,Az) so that... | 01/22/1991 |
| 4932248 | Method and device for measuring vertical movements in the absence of a fixed reference point A method and device are provided for measuring the vertical movements of a floating object, for example, in the absence of a fixed reference point. Using a differential pressure sensor, the pressure difference is measured which prevails at a measurement p... | 06/12/1990 |
| 4515013 | Apparatus for measuring the vertical acceleration due to the swell A buoy has accelerometers and magnetometers for measuring characteristics of an ocean swell. The main plane of the buoy floats on and follows the motion of the free surface of the ocean water. A first accelerometer and a magnetometer are mounted on the bu... | 05/07/1985 |
| 4499762 | Water wave monitor Method and apparatus for submerged service water wave monitoring utilizing a plurality of differential pressure gages in association with an absolute pressure gage developing, together, wave height, wave direction and frequency data.... | 02/19/1985 |
| 4466281 | Buoy for measuring wave slopes Buoy for measuring wave slopes provided with a mainly circular disc shaped body having a mainly horizontal lower surface and protruding downwardly from said lower surface a central circular protrusion having a smaller diameter than said lower surface and ... | 08/21/1984 |
| 4408488 | Generalized drifting oceanographic sensor A generalized drifting oceanographic sensor (GDOS) is cast adrift in the oceanographic environment along a pre-programmed depth schedule. A variable buoyancy housing has one or more external oceanographic sensors and an external acoustic telemetry transdu... | 10/11/1983 |
| 4404490 | Power generation from waves near the surface of bodies of water For the purpose of converting the mechanical energy of surface waves on bodies of water, a power generating piezoelectric structure (10) is provided comprising piezoelectric material members, preferably in the form of one or a laminate of sheets (14) of s... | 09/13/1983 |
| 4220044 | Wave measuring buoy A wave measuring buoy for measuring ocean surface wave amplitude, frequency and direction of propagation is disclosed. The buoy includes a single-axis accelerometer suspended as a pendulum inside a water-proof housing. The water-proof housing is connected... | 09/02/1980 |
| 4184368 | Oceanic wave measurement system An oceanic wave measurement system wherein wave height is sensed by a barometer mounted on a buoy. The distance between the trough and crest of a wave is monitored by sequentially detecting positive and negative peaks of the output of the barometer and by... | 01/22/1980 |
| 4161118 | Force direction transducer This invention concerns an electrical mechanical instrument transducer which accurately detects the direction of an externally applied force and more particularly, though by no means exclusively, transducer apparatus that provides an electrical signal com... | 07/17/1979 |
| 4135394 | Wave measuring buoy A wave measuring buoy for measuring ocean surface wave amplitude and frequency is disclosed. The buoy includes a single-axis accelerometer suspended as a pendulum inside a water-proof housing. The waterproof housing is connected to and beneath the flotati... | 01/23/1979 |
| 4104608 | Heave meter A contour mapping system including compensation for the heave or vertical displacement of a ship due to wave and swell effects, and for correcting errors due to such effects in depth or bottom contour measurements of a body of water. Vertical acceleration... | 08/01/1978 |
| 4084430 | Load measurement A device for measuring externally applied loads on a structural member, such as a support leg of an off-shore installation, comprises one or more flexible fluid-filled cells constrained between the surface of the structural member and a casing capable of ... | 04/18/1978 |
| 4000646 | Wave height measuring device The invention relates to a wave measuring instrument for use on a dynamically positioned or tethered floating vessel whereby to continuously monitor wave height, wave period and vertical heave of the vessel as the vessel responds to waves, swell and curre... | 01/04/1977 |
| 3983750 | Fluid level sensing device A water wave height and fluid level measuring system is disclosed as having buoyant support mast which floats partially above water and partially below water in a substantially vertical disposition. A radio frequency transmitter is mounted on said mast ab... | 10/05/1976 |
| 3955412 | Water current force measuring apparatus A water current force measuring apparatus consisting of a pliable rope or line suspended in the water with its lower end anchored to the bottom while the length of the line is subjected to the forces of the current. The upper end of the line is secured to... | 05/11/1976 |
