129 results about "Ship master" patented technology

The invention discloses a quick estimation method for gyro errors in a ship-borne master/sub inertial navigation transfer alignment process, and catering to transfer alignment of ship master/sub combinations, designs a quick estimation method for the gyro errors, which is suitable for mooring/constant-speed direct flight conditions and is used for quickly estimating constant errors of sub inertial navigation gyros. Under the support of a real-time multiple task operating system, a sub inertial navigation system implements the circular navigation resolving and the information fusing for one group of data; and the high-speed performance of a computer is fully used to quickly finish the estimation of the gyro constant errors in the transfer alignment process. The method dose not change the existing algorithm of navigation resolving, dose not change the filter structure and the information matching mode in the transfer alignment information fusing algorithm, fully uses the redundant resources of the existing navigation computer, and quickens the gyro error estimation speed in the transfer alignment process.

The invention provides a lashing bridge structure of a large container ship and relates to the technical field of ship equipment design. The device comprises a plurality of horizontal platforms, a plurality of stand columns, a plurality of binding eye plates and a plurality of shear walls, wherein the horizontal platforms are arranged in the ship width direction of a large container ship, the stand columns are vertically arranged on two sides, in the ship length direction of the large container ship, of each horizontal platform and fixedly connected with the horizontal platform, the stand columns comprise a plurality of cabin cover guide stand columns, a plurality of first stand columns and a plurality of second stand columns, bottom ends of the cabin cover guide stand columns are supported on a ship body cabin coaming structure of the large container ship, bottom ends of the first stand columns are supported on a ship body structure of the large container ship, bottom ends of the second stand columns are not connected with the ship body structure of the large container ship, the binding eye plates are arranged on the stand columns, and the shear walls are arranged among the standcolumns in the ship width direction, and the shear walls are longitudinally arranged between the third horizontal platform and the ship body cabin coaming structure. The lashing bridge structure is advantaged in that a lashing bridge is light in weight, construction cost is saved, and operation of wharf workers is facilitated.

The invention discloses a liquid cargo tank arrangement form capable of effectively reducing 20000-30000 m<3> liquefied gas carrier cost. The number of liquid cargo tanks is only two, the two liquid cargo tanks include the first liquid cargo tank near a bow and a second liquid cargo tank near a stern, a first transverse bulkhead and a second transverse bulkhead are arranged between the first liquid cargo tank and the second liquid cargo tank, the first transverse bulkhead is close to the first liquid cargo tank, and the second transverse bulkhead is close to the second liquid cargo tank; a non-cargo loading tank is formed between the first transverse bulkhead and the second transverse bulkhead, the distance between the first transverse bulkhead and the second transverse bulkhead is Lvoid,the Lvoid is larger than or equal to L<2/3>/3-L1-L2, wherein L is the length of a liquefied gas carrier, L1 is the distance from the tail of the first liquid cargo tank to the first transverse bulkhead, and L2 is the distance from the head of the second liquid cargo tank to the second transverse bulkhead. The liquid cargo tank arrangement form can reduce the ship initial investment cost, can alsoeffectively simplify the operation process of the liquefied gas carrier and improves the operational safety of the liquefied gas carrier.

A safety system for a boat, watercraft or other vehicle includes a kill switch connected to the motor for preventing the motor from running under dangerous circumstances. The system includes a fob that wirelessly communicates with the kill switch, so that the motor only runs when the fob is within a predetermined distance from the captain's console. Other sensors communicate with the kill switch, either hard-wired together or wirelessly, upon detection of dangerous situations, including proximity sensors to detect if a swimmer is near the propeller or if the captain is not in position at the helm, gate sensors to detect when gates on the boat are in an open position, and ladder sensors to detect when a ladder is in a down position. The system may also include an alarm emitting a visual or audible warning to the boat captain based on input from the sensors.

The present invention relates to a method and a system for recognition of objects near a ship by using a deep neural network to prevent a collision with the object by recognizing a neighboring object that may be risky to the ship sailing in a restricted condition such as a foggy environment. All object movements within a predetermined radius are detected and recognized so that collision accidents with objects on the sea in an environment such as fog caused by bad weather at sea can be prevented, and a risk alarm is notified to a captain when the object is detected so that collision accidents can be remarkably reduced. In addition, peripheral environments are detected by only installing a CCTV camera so that expenses can be reduced, human negligence can be prevented, and the system can be easily constructed to prevent collisions.

A round, globe like weight made of alcryn or similar rubber like material with a swivel which is embedded in the body during the injection molding process.

The invention relates to a measuring method of the matching supercharger parameters of a shipborne diesel engine under ISO condition, which comprises the following steps: the parameters of the diesel engine with 100 percent load under real condition are measured; air consumption under real condition is calculated according to the measured parameters and then converted into air consumption J46 under ISO condition; the absolute value of scavenging air pressure under the real condition G41 is converted into the absolute value J41 of scavenging air pressure under the ISO condition; the pressure ratio K11 of a gas compressor that is corresponding to the running parameters of the diesel engine under ISO condition is calculated; airflow rate J14 and the pressure ratio K11 of the gas compressor that are corresponding to each load of the diesel engine under ISO condition (such as 90 percent, 75 percent and 50 percent) are calculated; matching supercharger points are depicted on a gas compressor property curve according to J14 and K11 and connected into a matching line, and a surge margin Delta is calculated by comparing with the matching line with a surging line 2. The measuring method of the invention can obtain the matching supercharger parameters under ISO condition and provide reference for ship masters and scientific researches, and is easy to determine the matching degree between the supercharger and the diesel engine.

The invention relates to a push rod clamping type rope towing system. An electro-hydraulic push rods I, an electro-hydraulic push rod II and an electro-hydraulic push rod V which are vertically telescopic are arranged in series along the inner side or outer side of the ship; an electro-hydraulic push rod III and an electro-hydraulic push rod IV are arranged at a position between the electro-hydraulic push rod II and the electro-hydraulic push rod V; each electro-hydraulic push rod extends support arm outwardly; a first support arm is provided with a guiding limit frame at the end part; a second support arm, a third support arm and a fifth support arm are provided with clamps with openings facing upward, and the fourth support arm end is provided with a clamp with an opening facing downward; the guide limit frame is provided with a shift lever that divides the limit frame into two, and one end of the shift lever and the limit frame are hinged by an elastic reset hinge. The invention solves the problems that the claw or the hook mounted on the conveyor belt/chain cannot smoothly take off the floating ball or the ropes, the seedling ropes, and the floating balls are damaged due to theforce.

The invention provides an intelligent auxiliary berthing system for a three-purpose working ship, and relates to the technical field of ship navigation. The intelligent auxiliary berthing system for the three-purpose working ship comprises a command base and the three-purpose working ship, wherein the command base and the three-purpose working ship each comprise a data acquisition module, a parameter preprocessing module and a wireless connection module, and the three-purpose working ship further comprises an expelling module, a data analysis processing module, an alarm module and a display terminal. By arranging the data acquisition module on the three-purpose working ship, image data information acquisition can be carried out on overwater and underwater environments near a command base, image data information acquisition can be carried out on the overwater and underwater environments near the three-purpose working ship during berthing by arranging the data acquisition module on the command base, and then, a three-dimensional image between the command base and the three-purpose working ship is generated in real time, so that a captain can clearly know complex environments on water and under water during berthing, and the system is worthy of vigorous popularization.

A method for the reduction of ship fuel consumption through the optimisation of vessel draft, speed and trim using historical vessel data. Historical global, online data, is collected for multiple vessel operating parameters associated with its previous voyages. After initial filtering and cleaning of the gathered data, a process of analysing the data to determine the optimum draft, speed and trim for the vessels' given speed is described. The determined optimum draft, speed and trim values are then presented to the Captain or an automatic draft and trim optimisation system for the current draft and trim to be adjusted. This application therefore discloses a method for analysing historical vessel data to provide advice on optimum draft, trim and speed. A method for predicting the achievable fuel savings and recording the fuel savings achieved is also disclosed.

The invention discloses a protective liquid tank structure for resisting underwater explosion high-speed fragments, and belongs to the technical field of ship structure protection. The problem that an existing protective liquid tank is poor in protective performance is solved. The protective liquid tank is filled with absorption liquid and provided with a plurality of inner partition plates and a plurality of reinforcing ribs, the inner partition plates and the reinforcing ribs are arranged in the length direction of the ship, the inner partition plates are sequentially arranged from top to bottom, the reinforcing ribs and the inner partition plates are arranged in a staggered mode, and the two sides of each inner partition plate are fixedly connected with the liquid tank outer plate and the liquid tank inner plate respectively. And the two ends of each reinforcing rib are fixedly connected with the transverse bulkhead respectively. The multiple sets of reinforcing ribs and the inner partition plates are arranged in the length direction of the ship, the motion trails of detonation products and fragments can be changed, the detonation products and the fragments are made to deflect, meanwhile, shock waves generated when the fragments penetrate the liquid tank can be reflected, and therefore damage generated when the fragments penetrate the inner plate and the defense longitudinal wall of the liquid tank subsequently is reduced.

The invention provides a light-weight lashing bridge structure of an ultra-large container ship and relates to the technical field of ship design. The structure comprises a plurality of horizontal platforms arranged along the width direction of the ultra-large container ship, stand columns and a plurality of shear walls, wherein the stand columns are vertically arranged on two sides, in the ship length direction of the large container ship, of each horizontal platform and fixedly connected with the horizontal platforms, the stand columns comprise a plurality of cabin cover guide stand columns,a plurality of first stand columns and a plurality of second stand columns, bottom ends of the cabin cover guide stand columns are supported on a ship body cabin coaming structure of the large container ship, bottom ends of the first stand columns are supported on a ship body structure of the large container ship, bottom ends of the second stand columns are not connected with the ship body structure of the large container ship, the shear walls are arranged between the stand columns at intervals in the ship width direction, and the shear walls are longitudinally arranged between the fourth-layer horizontal platform and the ship body cabin coaming structure. The structure is advantaged in that the weight of the whole structure is reduced, and construction cost is reduced.

The invention provides an unmanned ship system based on RTK technology. The system comprises an external reference station and a driving ship. The reference station is used for sending RTK differencedata. The driving ship is provided with a GNSS receiver used for collecting locating information of the driving ship; a radio module used for carrying out precision calculation according to the locating information and the RTK difference data sent by the reference station; a data acquisition module used for collecting driving data of the driving ship; a communication module used for receiving a remote control command of an external remote controller; a data fusion module used for fusing the driving data, the locating information and the RTK difference data obtained after precision calculationto obtain fused data; a ship master control unit used for receiving the fused data sent by the data fusion module and the remote control command of the external remote controller and generating a control signal; and a ship execution unit connected with the ship master control unit and used for responding to the control signal of the ship master control unit and controlling a sounding boat to carryout corresponding operation. The system greatly improves intelligence level and stability of the unmanned ship.

The invention provides a garbage salvage catamaran, and belongs to the technical field of garbage salvage equipment. The garbage salvage catamaran comprises a first ship body, a second ship body, a first chain conveying belt, a second chain conveying belt and a fishing device, a collecting box is fixedly connected between the first ship body and the second ship body, and the first chain conveyingbelt is arranged on the side wall, close to the second ship body, of the first ship body in the ship length direction; the second chain conveying belt is arranged on the side wall, close to the firstship body, of the second ship body in the length direction of the ship, the second chain conveying belt and the first chain conveying belt are symmetrically arranged, and the fishing device is arranged between the first chain conveying belt and the second chain conveying belt. When the first chain conveying belt and the second chain conveying belt rotate in the same direction at the same time, thefishing device can salvage garbage between the first ship body and the second ship body into the collecting box. Garbage in different water areas can be rapidly collected, different kinds of garbageare stored in a classified mode, and the garbage collection efficiency is improved.

The invention discloses a ship probability conflict detection method based on a minimum safe distance model. The method comprises the following steps: S1, obtaining ship information of a ship and surrounding target ships; s2, calculating the relative direction and the relative distance of the target ship relative to the ship; s3, screening the minimum safe distance between the ship and the surrounding target ship in the specified azimuth interval within the preset time period; s4, performing data point denoising on the screened minimum safety distance; s5, constructing a mathematical model of the MSD, the ship length, the navigational speed and the relative orientation; s6, generating random sampling points according to the probability density function of the ship speed based on the Monte Carlo thought, inserting each random sampling point into the ship uncertainty motion equation model, and solving the conflict probability by using a deterministic solver. According to the method, a ship driver can be helped to discover ships with high conflicts in time in the sailing process, the sailing risk can be known more accurately and rapidly, so that a control decision for avoiding the risk is made, and the sailing safety is improved.

The invention discloses a water traffic risk dynamic test method, medium and system, and the method comprises the steps of building an internal information set of a water traffic system through the export of ship equipment, the collection of a maritime department, and the consultation, investigation and extraction of information of a captain, wherein the information set comprises navigation environment information, man-machine interaction information and ship-shore communication information; extracting and measuring non-uniform characteristics of internal information transmission of a water traffic system in combination with an information flow theory, and realizing water traffic risk dynamic characteristic extraction and analysis modeling by utilizing wavelet transform and spectral analysis; using a data driving method to construct a water traffic risk dynamic test model; and finally, inputting the abnormal characteristic value of the water traffic system information of the test water area into the risk dynamic test model to obtain a risk calculation value of the water area. According to the invention, the dynamic test of the water traffic risk can be rapidly realized, and the efficiency and pertinence of water traffic safety supervision are improved.

The invention discloses a ship navigation feature and preference analysis method based on AIS data and belongs to the field of ship traffic. The ship navigation characteristic and preference analysismethod based on the AIS data, the static information and the dynamic information contained in the ship AIS data are combined, in the navigation operation process of the ship in the navigation channel,the ship speed characteristics of different types of ships in different time periods and the navigation preferences of different types of ships with different ship lengths are explored, the parameters required by the navigation channel and anchorage ground trafficability simulation dynamic simulation research are determined, the pertinence of maritime affair management in ship navigation is enhanced, and management efficiency is improved.

The invention discloses a pre-assembly construction and turnover hoisting method for a rudder horn block of a large ship. The pre-assembly construction and turnover hoisting method comprises the following steps: step 1, a block division method and a construction method for the rudder horn block: A1, a division method for the rudder horn block; A2, a segmented construction method of the rudder hornblock; A3, a block construction method of the rudder horn block; step 2, an inverse pre-assembly construction method; step 3, a pre-assembly turnover method: A1, the length direction of the pre-assembly is consistent with the length direction of a ship in a dock; A2, the ship length direction of the pre-assembly is perpendicular to the length direction of the ship in the dock. High-altitude operation of a lower deck and a lower structure is flattened, high-altitude positioning, assembling, welding and coating difficulties are avoided through flat ground operation, the safety risk is reduced,the total assembly operation efficiency is improved, a time period foundation is laid for rudder system boring operation after block completion, and the method is universal for various ship types, particularly for simultaneously building various large ships in large docks.

The invention provides a transverse arc-shaped bulkhead anti-explosion protection structure for the broadside of a ship, belonging to the field of ship protection. The structure of the invention overcomes the problems that an existing bulkhead protection structure is insufficient in protection optimization and poor in protection capacity. The structure comprises a liquid tank inner plate, a watertight bulkhead and a plurality of arc-shaped plates, wherein the liquid tank inner plate, the watertight bulkhead and the arc-shaped plates are arranged between and connected with bulkheads, the arc-shaped plates are welded between the wired liquid tank inner plate and the watertight bulkhead and transversely arranged in the length direction of the ship, the ends of the arc-shaped plates are connected with a transverse bulkhead, the liquid tank inner plate and the watertight bulkhead are integrally welded to a liquid tank outer plate, the liquid tank outer plate and tank section outer plates are connected through a plurality of rib plates, and a plurality of explosion venting holes are formed in the rib plates. The structure is mainly used for protection of the broadside of a large ship.

The invention provides a ship collision risk assessment method and an application method thereof, which are used for dynamically assessing ship collision risks under different conditions. According to the frame, collision results are identified under different conditions according to the experience of a ship captain, collision parameters are evaluated, and the importance of each collision parameter is weighted. According to the method, information is summarized by using an evidence reasoning method, real-time collision risk assessment is allowed to be performed on collision results, collision parameters of each ship are assessed under different collision conditions, and scientific and effective analysis and intelligent management of ship traffic are realized.

The invention relates to a method for conducting linkage transportation on a ship master segment through flat cars. The method includes the following steps that according to the line type of the integrally-assembled ship master segment, serial-connection linkage or parallel-connection linkage is determined to be adopted; the two flat cars are driven to a transport starting point and are within a master segment crane transporting range, according to needs, the two flat cards are connected in parallel or in series to be placed, and linkage debugging is conducted; sole timbers are placed in advance at the corresponding positions of the flat cars or sole timbers and auxiliary supports are placed after a portal is placed on piers; the master segment is transported through a crane to the flat cars, and it is ensured that the master segment is stably placed on the flat cars; according to a set route, the two flat cars are adopted for transporting the ship master segment to a construction scene through linkage. According to the method for conducting linkage transportation on the ship master segment through flat cars, the situation is reduced greatly that there are no or few integral assembly places, and as a result the period of integral assembly is insufficient, the construction cost is lowered, and production efficiency is improved.

The invention discloses a method for swash suppression of an adjustable liquid tank. One or more longitudinal partition plates distributed discontinuously are arranged at the bottom of the liquid tank in the length direction of the ship, a plurality of sliding rails are arranged in the transverse direction, and the longitudinal partition plates are connected with the sliding rails to move in the width direction of the ship. The longitudinal partition plate is connected with the bulkhead through a spring and a damper. The stiffness coefficient of the spring and the damping coefficient of the damper can be adjusted in real time, parameters of the spring and the damper are adjusted according to the liquid carrying rate of the liquid tank and monitoring of external excitation, the actual first-order resonance frequency of liquid in the tank is made to be far away from the external excitation frequency, and resonance is prevented. Meanwhile, when the liquid in the tank sloshes, the energy of liquid sloshing can be absorbed and dissipated under the combined action of the longitudinal partition plate, the spring and the damper, so that the impact pressure borne by the whole wall face of the liquid tank is reduced, and the service life of the longitudinal partition plate is prolonged. Therefore, according to the scheme, the probability of safety accidents caused by sloshing of the liquid tank is reduced, and the ship traveling safety is guaranteed.

The invention discloses an ice area reinforcing area dividing method for an Arc ice-level bow and stern bidirectional icebreaker. The method comprises the following steps that an ice waterline, an icezone line, an edge flat line and a bottom flat line on a three-dimensional hull outer plate are unfolded in a two-dimensional mode and drawn on an outer plate unfolding drawing; an ice area reinforcing area of the icebreaker is sequentially divided into a bow area A, a bow area A1, a midship area B, a stern area A and a stern area A1 from the bow to the stern in the length direction of the icebreaker; the bow A1 area is divided into a plurality of reinforcing subareas; and the midship B area is divided into a plurality of reinforcing subareas by utilizing the ice belt lines, the edge flat lines and the bottom flat lines. The ice area reinforcing areas of the bow, the midship and the stern of the ship body are divided into a plurality of different ice load grades, the plate thickness of the reinforcing areas can be changed in a gradual change mode, and the ice load of the ice area better conforms to the actual stress characteristics of the ship during sailing in the polar sea area.