368 results about "Mooring" patented technology

The invention discloses a special-shaped steel pipe concrete pipe section hoisting dynamic pose control method, relates to the technical field of ocean engineering underwater pipeline installation, and mainly solves the problems of insufficient dynamic response and low space pose control precision when a special-shaped pipe section is hoisted in a complex water flow environment. The method comprises the steps that pipe section space pose design parameters are obtained, the pitch angle and the rolling angle of a pipe section are monitored in real time through an inclination angle sensor set, disturbance torque generated by real-time water flow force is calculated, sling length compensation amount is generated, and the take-up and pay-off speed of a chain block at each lifting point is independently adjusted; and meanwhile, adjusting mooring ropes moored on the two sides are pulled to control the horizontal rotation angle of the pipe section, the height of a lifting hook and tension of the mooring ropes are fed back and adjusted in cooperation with a floating crane positioning system, and finally accurate underwater in-position of the pipe section to the preset position of the seabed is achieved. The device is mainly used for hoisting and sinking operation of the special-shaped concrete filled steel tube section in the marine environment, water flow interference can be effectively resisted, and accurate butt joint and installation quality of a pipe section connector are guaranteed.

The invention discloses an underwater gliding robot anchoring process energy consumption optimization method and system based on a subdomain grey box model. The energy consumption optimization method comprises the steps that a white box energy consumption mechanism model in the underwater gliding robot anchoring process is established; the whole anchoring energy consumption stage of the underwater gliding robot is divided into a plurality of sub-domains, and a Latin hypercube design method is adopted to simulate and generate a plurality of sub-domain samples meeting variable range constraints by using a hardware-in-the-loop simulation platform; selecting a Kriging model as a sub-domain agent model, fusing the white-box energy consumption mechanism model and constraint conditions of an oil bag volume and a movable mass position to form a sub-domain grey-box model, and performing segmented energy consumption fitting by using the sub-domain grey-box model; and with minimization of energy consumption fitted by the sub-domain grey box model as a target, performing iterative optimization on the sub-domain proxy model by adopting a dynamic guidance self-adjusting particle swarm algorithm, and outputting optimal planning parameters. The method realizes anchoring full-process low-energy-consumption control, and is suitable for marine resource exploration, hydrological monitoring and other tasks.

The invention relates to the technical field of bridge pier scour monitoring, discloses an air-water-shore cooperative overwater float type bridge pier scour monitoring system, and belongs to the technical field of bridge safety monitoring. According to the system, an integrated framework is formed by a buoy platform, a shore-based cooperative monitoring station and a cloud monitoring platform. The buoy platform is fixed to a pier through a mooring lead, the underwater sonar module of the buoy platform can scan the terrain of a riverbed at multiple angles, and the overwater module integrates high-precision positioning and video monitoring. The shore-based station is provided with a laser scanner and a high-definition camera to monitor the overwater structure and the macroscopic environment of the pier. The cloud platform serves as a control center, converges the multi-source data of the buoys and the shore stations through a communication network, carries out time sequence correlation and fusion analysis, and dynamically evaluates the scour pit development and the bridge pier structure state. According to the invention, the limitation of a single monitoring mode is broken through, collaborative acquisition and intelligent fusion of air, water and shore data are realized, the comprehensiveness, accuracy and early warning capability of monitoring are remarkably improved, and reliable guarantee is provided for safe operation of bridges.

The invention provides a floating navigation mark anchorage positioning method and system, and relates to the technical field of floating navigation mark anchorage detection, and the method comprises the steps: transmitting a first wave beam to an underwater object through a sonar device, screening out a first echo of the underwater object which is an anchorage, and obtaining a target echo; acquiring a ship position; the sonar equipment transmits a second wave beam to the ship; a second distance and a second angle between the sonar equipment and the ship are determined firstly, and then the real-time position of the sonar equipment is determined; then determining a first distance and a first angle between the mooring ingot and the sonar equipment; based on the real-time position of the sonar equipment, the first distance and the first angle, determining the current position of the mooring ingot; and finally, generating an adjustment path based on the current position and the design position of the tied ingot. And the echo corresponding to the concrete anchor is screened out as the target echo, so that the interference of irrelevant objects is eliminated. A sonar detection principle and an algorithm are used to calculate the specific position of the mooring anchor underwater. And by comparing the current position and the design position of the tied ingot, the deviation condition is known, and correction is facilitated.

The invention relates to a wave energy conversion device, a control method thereof, a control device and a storage medium, and relates to the field of wave energy power generation. The wave energy conversion device comprises a wave energy conversion unit, a fixed reflecting wall structure and a mooring and anchoring system. The wave energy conversion unit comprises a floater, a power output device and a connecting structure for connecting the floater and the power output device; the static immersion depth of the floater in the initial state is configured to respond to wave excitation and mainly take heaving motion, and the power output device is used for converting the heaving motion of the floater into available energy to be output; the wave energy conversion unit is connected to a seabed or a fixed reflecting wall structure; the fixed reflecting wall structure is arranged on one side of the wave energy conversion unit and is used for reflecting waves with opposite propagation directions, so that the wave energy forms energy accumulation in a local area around the wave energy conversion unit; and the mooring and anchoring system is used for stabilizing the wave energy conversion unit and the fixed reflecting wall structure in a preset water area environment together.

The invention provides a laying tool, a laying method and a recovery method for a sailing type temperature-salinity-depth detector, and the tool comprises a tow fish which is provided with an attitude sensor on the surface of a housing and is used for detecting the pitch angle of the tow fish; the throwing frame is installed on the ship body and used for guiding the laying path of the tow fish; the winch is installed on a ship afterdeck or in a cabin, and the tow fish is hung through a mooring rope. Wherein an executing mechanism of the winch is in communication connection with the attitude sensor and is configured to respond to an attitude signal generated when the tow fish enters water and drive the tow fish to be adjusted to be in a vertical state; and driving the tow fish to be adjusted to be in a horizontal state in response to a posture signal when the tow fish is out of water. The laying tool provided by the invention is suitable for various laying scenes, realizes automatic posture adjustment of the tow fish when the tow fish enters and exits water, improves the automation degree and safety of operation, avoids human interference, and is beneficial to improving the measurement precision of the temperature-salinity-depth sensor.

The invention provides a resetting system and a resetting control method for an offshore floating energy island, and the resetting system comprises a counterweight adjusting module which comprises a servo motor, an annular mooring chain track and a counterweight block. The buoyancy adjusting module comprises air supply equipment and an air bag. And the thrust adjusting module comprises a horizontal thrust adjusting module and a vertical thrust adjusting module. And the monitoring module comprises a plurality of groups of sensors to monitor the position information of the energy island in real time. When the energy island is in vertical unbalance, the servo motor drives the balancing weight to move along the annular mooring chain track, and first-stage reset adjustment is carried out; further, the air supply equipment inflates and deflates the air bag for secondary reset adjustment; further, a vertical thrust adjusting module provides vertical thrust to carry out three-stage reset adjustment; when the energy island is horizontally unbalanced, the horizontal thrust adjusting module provides horizontal thrust and pushes the floating body main structure to achieve horizontal reset adjustment. According to the scheme of the invention, through a multi-stage reset strategy, the reset efficiency of the energy island and the adaptability in an extreme environment are improved.

The invention discloses a digital twinning-based multistage water-saving ship lock navigation safety guarantee method and system, and the method comprises the steps: collecting multi-source sensing data, generating an alignment data flow and a quality evaluation report, and updating a digital twinning state; by means of the aligned data flow and the quality evaluation report, through non-contact observation and probability fusion, mooring force probability distribution is obtained; based on the digital twinning state and the alignment data flow, identifying a hydraulic impulse response and adopting hydraulic phase lock tracking to generate a vibration suppression opening template; and in the digital twin system, integrating the mooring force probability distribution and the vibration suppression opening template, executing distribution robust random control barrier optimization, and outputting an executable valve track. According to the method, water hammer oscillation can be actively inhibited, robust safety guarantee is provided for uncertain mooring force, and the navigation safety of the large water-saving ship lock is effectively improved.

The invention belongs to the technical field of ocean new energy, and provides an anchor system multi-floating-body array wave flow motion response analysis method and system, and the technical scheme is that a joint simulation method of multi-body dynamics and computational fluid mechanics is adopted to carry out the comprehensive modeling and analysis of a mooring type multi-floating-body array, and the wave flow motion response analysis of the mooring type multi-floating-body array is realized. A universal joint connection structure for platform connection is designed, and an equivalent concentrated mass-spring unit is introduced to simplify modeling of a mooring chain. Joint simulation is implemented in a numerical wave generation and ocean current pool, and hydrodynamic force and structural response of the anchor system multi-floating-body array system under the steady-state ocean current and regular wave conditions is evaluated; the system studies the influence of the size of the floating ball, the weight of the mooring chain and the flow velocity on the hydrodynamic performance and the platform stability. And the performance requirements in a complex marine environment can be better met.

The invention relates to the technical field of deep sea communication and ocean observation, in particular to a long-term stable real-time communication system based on domestic satellites under high sea conditions. Comprising a submerged buoy body, the submerged buoy body is provided with a communication floating body module, a multi-source domestic satellite communication module, a low-power-consumption control module and a data processing module which are electrically connected in sequence, and an intelligent sensing module and an underwater data access module which are respectively connected with the data processing module; the device further comprises a main floating body. The system can be widely applied to deep-sea subsurface buoy platforms, marine environment monitoring stations, deep-sea scientific investigation equipment and other scenes, realizes real-time transmission of hydrodynamic and biogeochemical multi-element synchronous observation data at the water depth of 0-6000 meters, and supports research on the dynamic process of isolated waves, near-inertia internal waves and the like in the ocean and safety guarantee of the marine environment.

The invention discloses a concrete floating system which comprises a concrete floating body, an embedded steel drum and a plurality of mooring chains, the lower end of the embedded steel drum is embedded in the upper surface of the concrete floating body, the end of each mooring chain is connected to the side face of the concrete floating body, and the system can adapt to the complex and changeable marine environment and is high in practicability. And the safety and the stability of the new energy equipment are improved.

The invention discloses a grabbing and suction force fusion shared anchor structure, an offshore floating platform and an implementation method. The grabbing and suction force fusion shared anchor structure comprises a barrel wall and a barrel cover; the top of the barrel wall is connected with the barrel cover to form a suction anchor structure; a plurality of wing plates are distributed on the outer side wall of the barrel wall; barrel wall lug plates are arranged on the outer side wall around the barrel wall; the barrel wall lug plate is connected with the barrel wall lug plate connecting rod; a mooring ring is arranged on the outer side of each barrel wall lug plate connecting rod; each mooring ring is fixedly connected with the lower end of the anchor chain; the upper end of the anchor chain is connected with an anchoring point on the offshore floating platform; anchor grabbing key teeth are arranged at the lower part of the outer side wall around the barrel wall; each catching anchor key tooth is hinged with one end of the umbrella-shaped catching anchor; and a vertical pile anchor is vertically arranged in a central through hole of the barrel cover. According to the invention, stable and reliable anchoring support can be provided for an offshore floating photovoltaic (or wind power) system installed on an offshore floating platform under complex mooring working conditions of large load, high torque and strong stress.

The utility model provides mooring type feeding unmanned aerial vehicle feeding equipment for deep and far sea culture and a feed feeding device. The feeding equipment comprises a feeding unmanned aerial vehicle, a feeding hose, a hose winch, a Roots blower, a feed storage tank, a distribution box and a control end. The feed feeding device comprises a feed feeding assembly and a feeding hose connector, the mooring type scheme of unmanned aerial vehicle feed feeding is achieved, the safety of the feed feeding process is guaranteed by means of an unmanned aerial vehicle feeding mode in the face of the complex sea conditions of deep and far sea breeding, and manpower input is reduced; more importantly, the feed storage tank is directly connected with the unmanned aerial vehicle through the feeding hose (capable of being integrated with a cable), feed supply and power supply of the unmanned aerial vehicle in the feeding process are guaranteed, the feeding area of deep and far sea breeding is large, the breeding distance is large, the situation that the unmanned aerial vehicle goes back and forth for multiple times can be avoided through the mode, and the feeding efficiency is greatly improved.

The invention relates to the technical field of ship mooring, and discloses a ship mooring device which comprises a bearing seat, a cable winding wheel is fixedly connected to the outer wall of a shaft rod of the bearing seat, a cable is evenly wound around the outer wall of the cable winding wheel, a servo motor is fixedly connected to one side of the cable winding wheel, and a guide assembly is arranged on one side of the bearing seat. A tension self-adjusting assembly is arranged on the side face of the guide assembly and comprises a plurality of guide wheels arranged side by side, the outer wall of the cable is continuously connected with the guide wheels in a wound mode, and the cable is continuously connected to the guide wheels of the tension self-adjusting assembly in a wound mode through the tension self-adjusting assembly. When the ship shakes and the tension of the mooring rope is increased, the tension self-adjusting assembly starts to play a role and can absorb and consume energy generated by the ship shaking, so that the change of the tension on the mooring rope is buffered.

The invention provides a mooring failure prediction method, device and equipment based on a floating type wind turbine, and belongs to the technical field of floating type wind turbines.The method comprises the steps that platform data of the floating type wind turbine and environment data of the environment where the floating type wind turbine is located are obtained; analyzing the platform data, and constructing a platform numerical simulation model of the floating wind turbine; splitting the environmental data, and extracting key environmental parameters of each environmental parameter type; on the basis of the key environment parameters, motion change information and mooring force change information of the floating wind turbine are predicted through a platform numerical simulation model and a motion mooring prediction model; according to the method, the mooring failure evaluation strategy is used for carrying out anomaly evaluation on the motion change information and the mooring force change information, a mooring failure evaluation result of the floating type wind turbine is generated, and the accuracy of motion response prediction of the floating type wind turbine is effectively improved.

The invention relates to the field of marine floating bridges, and discloses a marine floating bridge floating island module which comprises a seabed pile foundation, the side wall of the top end of the seabed pile foundation is sleeved with a lifting lug a through a cable a, the surface of the top end of the seabed pile foundation is sleeved with a lifting lug b through a cable b, and floating bridge mechanisms are arranged on the surfaces of the lifting lug b and the lifting lug a. The platform can be quickly built at positions such as the sea surface so as to cope with different use environments. A storm-resistant stable system is constructed through a semi-cylindrical structure, a two-way mooring rope and gravity center adjustment, the curved surface contour of a semi-cylindrical floating plate can guide waves to flow along the side face of a plate body, front impact is avoided, wave impact force is dispersed, and the transverse swing angle is controlled within 5 degrees; the seabed pile foundation forms pull-down and side-pull two-way fixation through the mooring rope a and the mooring rope b, vertical movement is limited, horizontal drifting is restrained, and the module is prevented from being separated from a preset area; the gravity center of the sealed clean water bags in the water storage cavity can be flexibly adjusted by increasing and decreasing the number.

This invention relates to the field of marine observation data processing technology, specifically a method for quality control and evaluation of real-time communication mooring data, comprising the following steps: data preprocessing to obtain preprocessed data; multi-dimensional anomaly identification of the preprocessed data, removing anomalies to obtain data to be verified; multi-node spatiotemporal synchronization verification of the data to be verified to obtain synchronized data; adaptive consistency verification of the synchronized data using an internal wave mode; checking the presence of internal wave data observation signals on the synchronized data after consistency verification; and data quality level evaluation. This invention solves the data deviation problem caused by resetting the coefficients of inductively coupled sensors, achieving dual quality control of real-time data and post-corrected data; it constructs a data quality evaluation system adapted to deep-sea real-time communication moorings, quantifies data quality levels, and provides a basis for data reliability in marine scientific research.

FIELD: underwater equipment.SUBSTANCE: invention is intended for precise automatic docking and fixation of autonomous unmanned underwater vehicles (AUVs) using bottom mooring devices (BMDs). For automatic docking and fixation of an autonomous unmanned underwater vehicle on bottom mooring devices, an underwater vehicle is used with the ability to detect bottom mooring devices using a hydroacoustic navigation system installed on it. Using the onboard control system, the underwater vehicle stabilizes its position in the working area of the manipulator with a given orientation to its grip; simultaneously with the last command, a signal is sent using the hydroacoustic navigation system of the underwater vehicle about its arrival in the area of the bottom mooring device. After receiving this hydroacoustic signal from the hydroacoustic navigation system, a machine vision system installed near the manipulator's grip is turned on, and with its help, the spatial location of the clamp of the gripping device located in the bow part of the underwater vehicle’s hull is detected, and then, with the help of the technical vision system and the manipulator control system, its open grip is smoothly moved towards the clamp until the contact sensor, located inside the gripper jaws, is triggered; upon the signal from the contact sensor, the gripper jaws are closed, fixing the underwater vehicle in the water space. Using the manipulator control system, the corresponding control signals are sent to the manipulator drives, smoothly moving the underwater vehicle to the bottom mooring device platform; during this movement, the underwater vehicle’s thrusters maintain its horizontal position; said movement of the underwater vehicle by the manipulator is completed after the activation of the locking devices located, respectively, on the underwater vehicle and the bottom mooring device. After said fixation, using contactless devices located inside the fixing devices, the underwater vehicle's batteries are recharged via a cable-rope, information is exchanged between this underwater vehicle and the accompanying vessel, or the underwater vehicle is quickly lifted onto this vessel using a winch.EFFECT: precise and rapid docking of the AUV with the charging device or with the device for its rapid ascent to the surface, as well as rigid fixation of the AUV at a given point in the water space when the onboard equipment of this apparatus performs arbitrary working operations.1 cl, 1 dwg

The utility model discloses an automatic grabbing beam for a ship lock floating bollard, which comprises a grabbing beam body and a grabbing beam column welded at the top of the floating bollard, and the grabbing beam body can be hung on a crane lifting hook and can ascend and descend along the extension direction of a guide groove of the floating bollard. A locking channel for the beam grabbing column to pass through is arranged on the beam grabbing body, a locking component capable of locking the beam grabbing column is arranged on the beam grabbing body, and the locking component can lock the beam grabbing column with the upper end penetrating through the locking channel on the beam grabbing body. The automatic grabbing beam is formed by combining a split structure of the grabbing beam body and the grabbing beam column, the grabbing beam body can automatically lock the grabbing beam column which is inserted into the grabbing beam body and fixed to the floating bollard, the automatic grabbing beam is specially designed for the floating bollard, stress is balanced, deformation of the floating bollard cannot be caused, and the automatic grabbing beam is convenient to use. When the floating bollard is grabbed, a person does not need to drive a ship into a ship lock chamber to assist the hook in hanging the floating bollard, convenience, high efficiency, safety and reliability are achieved, and the labor amount is reduced.

The application discloses a kind of offshore bridge section float installation method based on SPMT, the installation method includes the following steps: S1: barge carries bridge section and SPMT reaches the front of installation pier, by dinghy, mooring rope is fixed on pier;S2: barge gradually tightens mooring rope, tail is aimed at the gap between pier;S3: barge winch tail is pulled into the gap between pier, ensure that the tail installation area is enough to accommodate bridge section and SPMT and is fixed using fender and float ball;S4: before installation, remove the bridge section binding, SPMT enters the bridge section below and lifts the bridge section from temporary support, is transported to tail, and is positioned by translation rotation etc. Action carries out bridge section installation position rough positioning.The present application uses SPMT to transport and install bridge section in position, which can achieve millimeter-level fine adjustment, has higher installation precision, reduces the impact of wave impact on barge, ensures the horizontal state of goods when barge is inclined, and reduces the time cost loss caused by bad weather.

This invention discloses a water damping connection device for a floating photovoltaic pontoon breakwater, belonging to the field of marine engineering technology. It includes a water damping mooring device installed at both ends of the pontoon breakwater, with the connection ends of the pontoon breakwater being open. The water damping mooring device includes a water tank, a bottom plate, tie rods, a push plate, and a compression spring. The water tank is open at both ends and installed inside the pontoon breakwater. The bottom plate is connected inside the pontoon breakwater. The push plate is placed inside the water tank, with a tie rod fixedly connected to one end away from the bottom plate. The tie rods at both ends of the pontoon breakwater are connected via universal joints. The compression spring is sleeved on the tie rod, with one end fixedly connected to the push plate and the other end fixedly connected to the opening of the water tank. A check valve is provided on the push plate, controlling the water flow from the bottom plate towards the universal joint side. Through the annular gap design between the push plate and the inner diameter of the water tank, when the wave load increases, the push plate moves to compress the compression spring, and simultaneously, the water flows in the annular hole, generating water damping and effectively attenuating the peak connection force.

This ocean current power generation system includes a floating body that floats on the sea surface, a rope body connected to the floating body, a support column of which an end part is connected to the rope body or passes through the rope body inside a vertically extending cylinder, a power generation device connected to the support column, a first mooring rope connected to a first anchor fixed to a quay or the seabed, and a power transmission cable that is wound around the mooring rope and extends.

1. Name of the designed product: mooring dolphin (sheep horn). 2. Use of the designed product: used for mooring ships at wharfs. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: design 1 perspective view. 5. Design 1 is designated as the basic design.

Provided is a tensile load reduction device for an offshore floating body. According to the embodiment of the invention, the tensile load caused by the mooring chain can be more efficiently reduced by utilizing the air compression cylinder. In particular, after the through holes are respectively formed in the upper part and the lower part of the air compression cylinder, when the tensile load caused by the mooring chain is applied, the through holes alternately perform air suction and air discharge, so that the tensile load caused by the mooring chain can be efficiently reduced.

The embodiment of the invention provides a fluid simulation method, an optimization method and equipment for a wind wave coupling floating type wind turbine, and belongs to the technical field of offshore wind power generation. According to the simulation method, a wind field and a wave field are coupled, a six-degree-of-freedom motion equation and a mooring model of the floating platform are established, a dynamic fluid interaction method and a catenary theory are adopted for coupling calculation, real-time interaction of pneumatic / hydrodynamic loads and platform motion in unsteady solution is achieved, and the simulation precision is improved. Therefore, the dynamic response of the floating wind turbine under the wind wave coupling effect is simulated with high precision. A layout optimization method is provided based on the simulation method, and an optimal layout scheme for improving the power generation efficiency and the operation stability of the floating wind power plant is finally obtained by setting layout parameters, performing coupling simulation, extracting performance indexes, constructing an evaluation function and performing iterative optimization by using an optimization algorithm. According to the method, the precision limitation of a traditional engineering simplified model under the strong unsteady working condition is overcome, and a reliable technical means is provided for evaluation of the deep and far sea floating wind power plant.

The utility model provides a kind of convenient mooring structure suitable for water level change, including the mooring bitt fixed on the top of dike, mooring bitt is used to connect first section steel wire rope, the tail end of first section steel wire rope connects metal ring, metal ring is simultaneously connected with intermediate segmented steel wire rope, another end of intermediate segmented steel wire rope is alternately connected with multiple intermediate segmented steel wire ropes by metal ring;When mooring, the ship cable bitt of ship is selectively connected with metal ring by mooring rope, to adapt to water level change.This structure can well adapt to water level change, and then ensure that ship can be conveniently and reliably realized mooring under different water levels, and then ensure the safety and convenience of mooring.

The present application relates to the field of water transport equipment, and more particularly to a floating double-layer mooring column, comprising: a floating member; a first pile body installed on the top of the floating member, comprising a first support and a first pile column body installed on the first support; a second pile body movably installed on the top of the first pile body, comprising a second support hingedly connected to the top of the first support and a second pile column body installed on the second support; wherein the second support is arranged to be liftable. The present application effectively solves the problems existing in the prior art by arranging the second pile body to be liftable.

The embodiment of the utility model discloses a quick laying type intercepting net system, which comprises a water surface intercepting net body unit, an underwater intercepting net body unit, a mooring unit and a buoyancy unit, the two ends of the water surface intercepting net body unit are respectively arranged on the mooring unit, the underwater intercepting net body unit is arranged below the buoyancy unit, and the water surface intercepting net body unit is arranged below the buoyancy unit. The water surface intercepting net body unit can be rapidly laid in a specific water area, and the emergency handling requirement is met.

The invention relates to a fluxgate magnetometer system for a deep sea subsurface buoy platform and a data correction method, and belongs to the technical field of ocean geophysical observation, the system comprises an acquisition cabin, the interior of which is provided with a fluxgate sensor and a data acquisition and control module; the battery cabin is internally provided with a battery pack for supplying power to the system; and the watertight connecting cable is connected with the acquisition cabin and the battery cabin, the acquisition cabin and the battery cabin are two independent cabin bodies which are physically separated, and space interval arrangement is realized through the watertight connecting cable, so that interference of a magnetic field generated by the battery pack on the fluxgate sensor is isolated. According to the invention, the fluxgate sensor, the acquisition circuit and the power supply unit are respectively arranged in the independent pressure-resistant cabins through the modular subdivision design, the long-distance watertight cable connection is combined, the main magnetic interference source is isolated from the space, the measurement precision reaches 0.2 nT, and the noise level is as low as 0.09 nT.

The marine hooking device comprises a first hook body, a second hook body, a first hook tongue, a second hook tongue, a first lock pin and a second lock pin, the first hook body is provided with a first opening connecting structure, and the second hook body is provided with a second opening connecting structure. The first opening connecting structure is connected with a ship through a first middle connecting piece, the first hook body is provided with at least one first rope tying hole position connecting structure provided with at least one rope tying hole, and the second hook body is provided with at least one second rope tying hole position connecting structure provided with at least one rope tying hole. The first rope tying hole site connecting structures are bound and tied with the second rope tying hole site connecting structures through ropes in a one-to-one correspondence manner; the utility model further provides a tying and separating buoy system using the marine hooking device based on the Zhan coupler. The tying and separating buoy system comprises the marine hooking device based on the Zhan coupler and a tying and separating buoy. The safety, reliability and convenience of the marine hooking device and system are improved.