234results about How to "Reduce sailing resistance" patented technology

The invention discloses a novel nanometer reinforced, non-transition-layer, organosilicone and low-surface-energy type antifouling paint which can be directly coated to a base material and an epoxy primer without an intermediate transition layer. The antifouling paint comprises the following components in parts by weight: 10 to 20 parts of A, 2 to 10 parts of B, and 0.1 to 2 parts of C, wherein the component A comprises the following materials in parts by weight: 25.0 to 50.0 parts of nanometer pre-dispersed slurry, and 0.5 to 5.0 parts of silicone oil; the component B comprises the following materials in parts by weight: 3.0 to 50.0 parts of crosslinking curing agent, and 1.0 to 10.0 parts of silane coupling agent; the component C comprises the following materials in parts by weight: 0.1 to 3.0 parts of catalyst. The coating has the advantages of being high in intensity, high in attaching force, easy to be constructed, and high in recoatability, and can be applied to various ships, offshore oil platforms, ocean structures and facilities, and mariculture nets and the like.

The invention discloses a composite triple-hulled vessel. The vessel comprises a main hull, side hulls and connecting bridges, wherein the side hulls are positioned on two sides of the main hull; the connecting bridges are connected with the main hull and the side hulls; the lower side of the side hulls is connected with a horizontal fin through an upright support. The composite triple-hulled vessel is also provided with a side hull moving device; the side hull moving device comprises a speed-down transmission mechanism, a connecting bridge moving mechanism and a locking mechanism; the side hull moving device is arranged on the lower side of the connecting bridges and in the cabin of the main hull respectively; the middle part of the connecting bridges is fixedly connected with the upper part of the speed-down transmission mechanism, the upper part of the connecting bridge transmission mechanism and the upper part of the locking mechanism respectively through a support A, a support B and a support C which are transversely arranged on the connecting bridges; the lower part of the speed-down transmission mechanism, the lower part of the connecting bridge moving mechanism and the lower part of the locking mechanism are fixedly connected with the middle part of the cabin of the main hull. The ship resistance of the vessel can be reduced in high speed sailing thus increasing the speed of the triple-hulled vessel .The composite triple-hulled vessel can select an optimal position for the side hulls under actual sea condition and sailing speed so as to improving the sailing stability of the triple-hulled vessel.

The invention discloses a planing boat with a catamaran three-channel hull. The planing boat is provided with a hull and a board at least. The bottom of the hull is provided with an A trunk bulkhead end surface, a B trunk bulkhead end surface, an A slideway, a B slideway, a C slideway, an A planing surface and a B planing surface; the B slideway is arranged along a central line and is a sector structure; the A planing surface and the B planing surface are arranged at two sides of the B slideway; the A slideway is arranged between the A planing surface and a right trunk bulkhead which is provided with the A trunk bulkhead end surface at the stern; and the C slideway is arranged between the B planing surface and a left trunk bulkhead which is provided with the B trunk bulkhead end surface at the stern. The catamaran three-channel hull adopts oval channel section conformation to solve the concentrative stress problem of the hull effectively.simultaneously, on the basis of common channel planing boats, the invention adds two outer side channels at two sides of the stern and changes single channel type into three-channel type, thus greatly increasing the width of the stern, not only improving the effective use area of the board, but also enhancing the transversal stability of the planing boat and being capable of reducing the wave making of the boat.

The invention discloses a nano-antibacterial low-surface energy organosilicon luminescence anti-fouling paint, which comprises the following components by weight: 25-35 parts of component A, 2-5 parts of component B and 1 part of component C; the component A comprises 25.0-50.0 parts of nano fluorescence pre-dispersion, 5-25.0 parts of organosilicon quaternary ammonium salt and 0.5-5.0 parts of silicone oil; the component B comprises 3.0-50.0 parts of crosslinking curing agent and 1.0-10.0 parts of silane coupling agent; The component C comprises 0.1-3.0 parts of catalyst; and the catalyst is at least one of stannous octoate, dibutyl tin diacetate and dibutyltin dilaurate. The paint has long persistence luminescent performance, has can prevent pollution by depending on fluorescence and enables contact sterilization, and has advantages of excellent antifouling performance, high strength and high adhesive force, can be used for various ships, sea petroleum platforms, marine structure and facility, marine aquaculture nets.

The invention discloses an unmanned water-surface cleaning electric triple-hulled vessel which comprises a main body, and side bodies on two sides of the main body, wherein the upper side of the main body and the upper sides of the two side bodies are respectively connected into a whole through two pairs of arched brackets; the upper side of the main body is provided with a wing-shaped streamline superstructure; a water surface foreign matter collecting device is respectively arranged between the main body and the two side bodies; the water surface foreign matter collecting device comprises a paddle wheel, a cam, a collecting basket, a paddle wheel transmission motor and a cam transmission motor; the paddle wheel transmission motor is fixedly connected with a corresponding paddle wheel; the cam transmission motor is fixedly connected with a cam inside the paddle wheel; a plurality of movable web plate mechanisms are uniformly distributed outside the edge of the paddle wheel in a radial direction; and the collecting basket is positioned on the rear side of the paddle wheel. According to the unmanned water-surface cleaning electric triple-hulled vessel, the advantages of high stability and low running resistance in the triple-hulled vessel are fully utilized, and the collecting efficiency is improved; and moreover, when the water surface is cleaned by the movable web plate mechanisms, the aim of collecting water surface foreign matters at high efficiency is fulfilled through swing of the web plates, and the labor intensity and the use cost are reduced.

The invention discloses a U-shaped self-propelled wave power generation device. The wave power generation device comprises a ship body, a wave energy collection and conversion mechanism and a propelling mechanism; the ship body comprises a cabin, a cockpit, a device chamber, a deck and a tail plate, wherein the deck is arranged at the upper part of the cabin, the cockpit is arranged on the deck, the device chamber is arranged inside the cabin, and the tail plate is arranged at the tail part of the cabin; the wave energy collection and conversion mechanism comprises a front vertical pipe, a front air turbine generator set, a rear air turbine generator set, a rear vertical pipe and a horizontal pipe; and the horizontal section of the front vertical pipe is approximately triangular, and the horizontal section of the rear vertical pipe is quadrilateral, the vertical section of the horizontal pipe is pentagonal, and the front vertical pipe, the horizontal pipe and the rear vertical pipe sequentially communicate to form a U-shaped channel. The wave power generation device has the advantages that a foundation is laid for low cost, the wide sea area and high-efficiently utilization of thewave energy.

The invention relates to a remote control lifesaving navigation device. The remote control lifesaving navigation device comprises a navigation body which is of a long barrel shape, a storage battery is installed inside the navigation body, a motor and propellers are installed on the rear end of the navigation body, a separable lifesaving module is installed on the front end of the navigation body, lifesaving cables are installed on two sides of the navigation body, and a control device is installed on the navigation body. The remote control lifesaving navigation device has the advantages that the remote control lifesaving navigation device is small in size, light in weight, and small in navigation resistance, enters into a shallow and a narrow water area easily and quickly, arrives at a trapped area in water in time, and enables a lifesaving rescue mission to be finished; the remote control lifesaving navigation device is provided with driving and remote control components, is flexible, strong in water resistance, and convenient to use and operate, the structure of the double propellers achieves strong driving force and steering handiness, good performance is achieved, emergency rescue ability and efficiency can be improved, and the remote control lifesaving navigation device can be repeatedly used; and the lifesaving module which can be ejected is installed, the ejection distance can achieve more than 10m, lifesaving equipment and items can be ejected to the trapped area according to situations, and the lifesaving rescue function of the remote control lifesaving navigation device is further strengthened.

The invention relates to a novel semi-submersible transport ship, in particular to a combined semi-submersible transport ship and a working method thereof and belongs to the technical field of semi-submersible transport ships. The combined semi-submersible transport ship is characterized by comprising two end ship bodies and a middle cargo carrying floating plate. The two end ship bodies are connected to the two ends of the middle cargo carrying floating plate and can be detached. The two end ship bodies can voyage independently and have the downward diving and upward floating capability. The middle cargo carrying floating plate has the independent downward diving work capability and can be remotely controlled by the end ship bodies to conduct downward diving work. The novel semi-submersible transport ship solves the problem that a traditional semi-submersible transport ship is insufficient in stability and reserve buoyancy in the downward diving process and solves the problem that in the downward diving process, the ship shakes violently and errors are prone to generation by operation personnel.

The invention belongs to the technical field of marine antifouling materials, and discloses main chain degradable zinc polyacrylate resin prepared by the aid of monomer processes and a method and application of the main chain degradable zinc polyacrylate resin. The main chain degradable zinc polyacrylate resin is mainly prepared from components including, by weight, 5-80 parts of vinyl zinc ester functional monomers, 5-95 parts of cyclic monomers, 0-95 parts of vinyl monomers, 0.01-10 parts of initiators and 50-100 parts of organic solvents. The main chain degradable zinc polyacrylate resin, the method and the application have the advantages that zinc ester bonds of side chains and polyester chain segments of main chains of the main chain degradable zinc polyacrylate resin can be hydrolyzed under the attack effect of seawater, accordingly, the problem of dependence of the traditional self-polish materials on navigational speeds can be solved, the surfaces of coatings can be regenerated in static seawater under hydrolytic degradation effects, antifouling agents can be released at constant speeds under effective control, and antifouling requirements of ships at low navigational speeds and facilities such as offshore oil production platforms can be met; the main chain degradable zinc polyacrylate resin is excellent in drag reduction performance; the main chain degradable zinc polyacrylate resin is used for marine antifouling coating.

The invention discloses a deformable ship stem with a flexible air bag. The ship stem is capable of reducing water resistance in ship sailing and improving the sailing speed of a ship, in peculiar to a deformable ship stem with a flexible air bag. The ship stem comprises a ship body, wherein the bottom of the ship body is provided with a bulbstem which is made of flexible materials and comprises the flexible air bag with an inflatable inner chamber; the flexible air bag is fixedly connected to the front end of the bottom of the ship body through a connecting piece; after the flexible air bag is inflated, the shape of the air bag is a stream line which raises to the front of the ship body; the bottom of the ship body is provided with an air inflating and exhausting system for inflating and exhausting air for the flexible air bag; a ship stem door is arranged above the flexible air bag; and the lower end of the ship stem door is hinged on the ship body. The deformable ship stem with the flexible air bag has the advantages of effectively reducing the sailing resistance of the ship, and the sailing speed is promoted, so that the energy consumed in a ship sailing process is reduced; when the ship arrives on a shore, the air is exhausted from the air bag, the air bag contracts, and a space is vacated for the ship stem door, so that the ship stem door is placed down successfully; and the deformable ship stem with the air bag is especially suitable for ferry ships carrying passengers and vehicles or other ships with ship stem doors; and meanwhile, the ship stem is simple, easy and feasible in structure, and low in cost.

The invention discloses a hydrolyzing-speed-controllable anti-pollution estersil material as well as a preparation method and application thereof. The preparation method comprises the following steps of: proportionally mixing an unsaturated vinyl ester monomer, unsaturated vinyl estersil and an unsaturated hydrolyzed regulated and controlled vinyl monomer, adding the mixture into a solvent under inert-gas protection, and then carrying out polymerization reaction with a free-radical initiator to generate the hydrolyzing-speed-controllable anti-pollution estersil material. In the preparation method, the hydrolyzing performance of the prepared estersil material has an adjustable characteristic to a greater degree by introducing the hydrolyzed regulated and controlled monomer, so that the dependency problem of traditional self-polishing materials on navigational speeds is solved, new surfaces can also be continuously refreshed through a hydrolytic action even though ships are stopped, and the anti-pollution requirements of low-navigational-speed ships, submarines and offshore oil-producing platform facilities can be well met; and the process is simple, the cost is lower, the hydrolyzing-speed-controllable anti-pollution estersil material is suitable for industrialized production, and the prepared estersil material has good application prospects in the field of ocean anti-pollution coatings.

The invention provides a water surface garbage salvage ship, and belongs to the technical field of garbage cleaning equipment. The ship comprises a ship body structure, a first conveying belt and two guiding devices. A notch is formed in the head of the ship body structure, a storage cabin is arranged in the ship body structure, a first through hole and a second through hole are formed in the upper side face of the ship body structure, and the first conveying belt is arranged in the notch in the length direction of the ship body structure; the two guide devices are symmetrically arranged on the left side and the right side of the notch, and the two guide devices can push garbage on the head of the hull structure to the first transmission belt. Garbage on the water surface can be rapidly fished, the garbage can be compressed and stored, and the salvage efficiency is improved.

The invention discloses a composite triple-hulled vessel with aid-to-navigation hydrofoils. The composite triple-hulled vessel comprises a deck, a main vessel body and two side vessel bodies, wherein the main vessel body and the two side vessel bodies are fixedly connected to the lower surface of the deck; the two side vessel bodies are located at the left and right sides of the main vessel body, and a deep-immersed aid-to-navigation hydrofoil is arranged at the tail portion of each side vessel body. According to the composite triple-hulled vessel with the aid-to-navigation hydrofoils, the design ideas of two high-performance vessels which are added with hydrofoils and side bodies correspondingly to be propelled are combined together, while the advantages of a triple-hulled vessel is ensured, the aid-to-navigation hydrofoils added with propelling devices assist the side vessel bodies to propel, so that the turning ability and the maneuverability of the triple-hulled vessel are enhanced, and the lengths of the deep-immersed aid-to-navigation hydrofoils and wave energy recycling hydrofoils are adjusted to change the areas of the hydrofoils, so that the flotation of the triple-hulled vessel in the sailing process is controlled.

The invention relates to an autonomous underwater vehicle capable of separating payloads. The autonomous underwater vehicle capable of separating the payloads comprises an underwater vehicle body, anunderwater vehicle payload bay and a separating device. The payload bay comprises a shell, a separating device and a payload; and the separating device consists of a pneumatic system and a spring separator. According to the autonomous underwater vehicle capable of separating the payloads, by using a vacuum mode, the end part of the payload bay is connected with the bow of the underwater vehicle body by means of the difference between internal and external pressures at the connected part of the payload bay body; and therefore, the structure with the connecting mode is simple and reliable. Whenthe autonomous underwater vehicle moves to a payload laying area, the pneumatic system of the separating device is started, the vacuum environment at the connected part of the payload bay body is released, and the difference between the internal and external pressures is reduced; and after the difference between the internal and external pressures reaches a separating threshold, the spring separator ejects out of the payload bay. The separating device can rapidly separate the payload bay, the attitude of the separating device is stable, and the separating device is uneasy to collide with the underwater vehicle body; and therefore, payload laying safety and stability of the autonomous underwater vehicle are enhanced, and higher practical significance is realized.

The invention relates to the technical field of underwater vehicle communication and particularly relates to an underwater self-folding antenna comprising an antenna assembly, an electronic cabin, a base, a driving mechanism and a bottom seat. The base and the driving mechanism are all arranged on the bottom seat, a rotating shaft is arranged in the base, the rotating shaft is driven to rotate bythe driving mechanism, the electronic cabin is connected to the base, the electronic cabin is driven to swing by the rotating shaft, the antenna assembly is mounted at an end of the electronic cabin away from the bottom seat, an electronic pressure switch is arranged on the electronic cabin, and the driving mechanism controls start and stop by the electronic pressure switch. When the underwater self-folding antenna does not need to communicate, the antenna assembly is laid down inside an aircraft, the antenna assembly is erected when the communication is needed, the navigation resistance of the underwater vehicle is effectively reduced, the antenna assembly is avoided from being hit, and unnecessary energy loss is reduced.

The invention discloses an aircraft structure capable of repeatedly entering and exiting from water. The aircraft structure comprises a fuselage and a head component, wherein the fuselage is providedwith telescopic wings and a rotatable empennage, and a fuel system is installed in the fuselage; the head component is arranged at a head of the fuselage; the head component includes an air storage tank, a cavitator connected with the air storage tank and a pusher connected with the cavitator; the cavitator includes an annular fixed part with a front-end vent hole and a control moving part movingalong the front-end vent hole; the pusher drives and enables the moving part to move so as to close or open the front end vent hole; the head component further includes a vent ring hole connected withthe air storage tank; and the pusher drives the annular fixing part to move so as to close or open the vent ring hole. The aircraft structure can fly in the air, does not generate a too high resistance to underwater diving, and can repeatedly enter and exit from water.

The invention discloses an air boat which comprises a hull.An upper loading support is arranged in a cabin of the hull.A power device is installed on the upper loading support.A deck of the hull bends forward and is in a shape that the front is low and the rear is high.The power device is located at the one-third position of the rear portion of the hull.After the hull is in water, the deck is in a horizontal state naturally, and the axis of a rotating shaft of the power device is parallel to the plane of the hull bottom.Supra polymer PE plates are attached to the hull bottom and the two sides of the hull.The supra polymer PE plates and the hull are fixedly connected through countersunk head self-tapping screws and sealant.Power performance of the air boat is improved, the bearing ability of the hull is improved, and advancing resistance of the hull in the complex environment is reduced.

The invention discloses a ship-shaped amphibious car. The ship-shaped amphibious car comprises four car wheel devices (14), hollow shaft devices (5) and four sets of worm wheel devices (39), wherein the four car wheel devices (14) are installed on four cylindrical-surface step hollow shaft rotating chassis devices (4) correspondingly; the first ends of the hollow shaft devices (5) are connected with a ship-shaped car body (1) through hinges, and the second ends of the hollow shaft devices (5) are fixedly connected with the four cylindrical-surface step hollow shaft rotating chassis devices (4); and the four sets of worm wheel devices (39) are installed on the first ends, inside the car, of the four hollow shaft devices (5) correspondingly, and rotating and stroke positioning of the four cylindrical-surface step hollow shaft rotating chassis devices (4) are driven by four sets of worm devices and the four sets of worm wheel devices (39). During switching of amphibious modes, when the four cylindrical-surface step hollow shaft rotating chassis devices (4) are all rotated by 180 degrees and switched into the water mode, the four car wheel devices (14) are rotated to the position above the ship bottom, and four stream-line surfaces (45) are rotated to the flat-bottom ship bottom (2) to take part in stream-line ship-shaped car body simulation so that the sailing resistance can be reduced.

The invention provides a device for reducing navigation resistance on a ship with a moon pool. The ship with the moon pool comprises a hull and the moon pool. The moon pool penetrates the hull. The device comprises a first flow guide plate and a second flow guide plate. The first flow guide plate and the second flow guide plate are fittingly arranged at a bottom opening of the moon pool and are respectively hinged to the bottom opening of the moon pool, a plurality of wing-shaped components are arranged on the first flow guide plate and the second flow guide plate along the length direction of the ship at intervals and are penetratingly arranged on the first flow guide plate and the second flow guide plate, front edges and rear edges are arranged on the wing-shaped components, each front edge of the corresponding wing-shaped component has an arc-shaped section, the section of each rear edge of the corresponding wing-shaped component is in the shape of an acute angle, each front edge and the corresponding rear edge are respectively arranged at two ends of the corresponding wing-shaped component, and the front edges face the direction of a stem of the ship. According to the technical scheme, the device has the advantages that obvious flow guide effects can be realized, vortex due to sudden change of the geometric shape of the opening of the moon pool can be reduced, and separation of water flow at the bottom of the moon pool and sloshing of water in the moon pool can be suppressed; the water in the moon pool is basically static during navigation, and accordingly the purpose of reducing the navigation resistance can be achieved.

The invention discloses a deepwater robot power supply system, which comprises a water surface power supply device and an underwater repeater, wherein the water surface power supply device is arrangedon a ship and processes low-voltage alternating current provided by an on-board electric generator arranged on the ship to obtain corresponding high-voltage direct current; and the underwater repeater is used for converting the high-voltage direct current transmitted from the water surface power supply device, and transmitting electric energy obtained by conversion to a deepwater robot. Comparedwith an existing power supply system that three-phase alternating current is directly adopted to supply power to a motor in the deepwater robot, the system disclosed by the invention is changed into two-line power supply from three-phase power supply, in addition, only active power required by the motor in the deepwater robot needs to be transmitted, so that the amount of the traverses of a wholeumbilical cable is reduced, meanwhile, the diameter of the traverse is reduced, and the weight and the cost of the umbilical cables are greatly lowered.

The invention belongs to the technical field of marine antifouling materials and discloses a main chain degradation type polyacrylic copper resin as well as a preparation method and application thereof. The main chain degradation type polyacrylic copper resin is prepared from the following components in parts by weight: 100 parts of an acrylate prepolymer, 5-50 parts of a copper-containing compound, 0-75 parts of monocarboxylic acid and 5-150 parts of an organic solvent, wherein the acrylate prepolymer is mainly prepared from the following components: a solvent, a cyclic monomer, a vinyl monomer, a (methyl) acrylic acid and an initiator. The resin side chain copper ester bonds and main chain polyester chain segments can be hydrolyzed under seawater attach, the dependence of the traditional self-polishing material on the navigational speed is avoided, the coating surface is self-updated in static seawater due to the hydrolytic degradation effect, the anti-fouling composition can be effectively controlled to be released at a constant speed, and the anti-fouling requirements of ships at a low navigational speed, offshore production platforms and other facilities are met; and moreover, the main chain degradation type polyacrylic copper resin has excellent drag reduction effectiveness.

The invention relates to the technical field of coatings and in particular relates to a hydrolyzed marine antifouling paint and a preparation method thereof. The antifouling paint comprises the following components in parts by weight: 1-5 parts of chlorinated rubber, 12-16 parts of xylene, 21-25 parts of hydrolyzed modified acrylic resin, 1-3 parts of chlorinated paraffin, 1-3 parts of superfine iron oxide red, 5-10 parts of zinc oxide, 0.6-1.2 parts of bentonite, 22-28 parts of cuprous oxide, 8-12 parts of barium sulfate, 8-12 parts of talcum powder, 1-5 parts of zineb and 0.1-0.3 part of dispersing agent 5040. The antifouling paint has the beneficial effects that the chlorinated rubber and the hydrolyzed modified acrylic resin are film forming matters and do not contain organic tin or DDT (dichlorodiphenyltrichloroethane), thus improving the environment; superfine iron oxide red and zinc oxide are antirust pigments and have good antifouling effects; and cuprous oxide and zineb are bactericides and can prevent bacterial breeding.

The invention discloses a modular AUV device. The modular AUV device mainly comprises a front cabin, a buoyancy adjusting cabin, a sensor cabin, an energy cabin, a tail cabin and a propulsion unit. Acamera and a searchlight are mounted in the front cabin. The buoyancy adjusting cabin is provided with a buoyancy adjusting mechanism, and the sensor cabin is provided with a control panel, a Dopplerspeedometer and a positioning system. The two sides of the sensor cabin are provided with side scanning sonars, the number of modules adopted by the modular AUV device can be increased and decreased according to actual demands, the device has a wireless communication function and is designed into a streamline shape, and steering of the modular AUV device is realized through the combined control ofsix propellers. Through combined control of the six propellers, the AUV maneuverability is improved while the complexity of a driving mechanism is reduced.

The invention provides a bulbous bow refit technology. The bulbous bow refit technology comprises the three main processes of manufacturing of a new bulbous bow, removing of an old bulbous bow, and hoisting of the new bulbous bow. During hoisting of the new bulbous bow, an original ship center line, a rib position line and a horizontal detecting line are drawn on an original ship outer plate, projection lines of the original ship center line and the rib position line are drawn on the dock floor, and by combining a floating crane, a large segmented positioning tool and a segmented positioning trolley and taking the center line, the rib position line, the horizontal detecting line and the projection lines of the center line and the rib position line as the standard, precise positioning of the new bulbous bow in transverse, longitudinal and height directions is achieved. The bulbous bow refit technology can fully utilize existing equipment to shorten the docking period, and operation is accurate and quick.

The invention relates to a skimming boat with a boat body provided with a march-past lifting board device, comprising a boat body. The middle-front parts of the port and the starboard of the boat bottom are provided with symmetrical wedge boards; and the boat tail is provided with a tail lifting board. The skimming boat is characterized in that the front end of the wedge board is connected with the bottom surface of the boat bottom; the board surface of the wedge board inclines backward to form an inclined angle with the bottom surface of the boat bottom; the wedge board extends to 6 / 10 to 3 / 10 of the width position of the bottom surface of the boat bottom from the side of the boat toward the middle line of the boat bottom; and the front end of the wedge board inclines backward from the side edge of the boat toward the middle part so as to form the march-past lifting board. The skimming boat reduces the running resistance, solves the problem that the negative pressure generated at themiddle part of the boat bottom influences the water inflowing of the door at the sea bottom and leads the running speed to be effectively improved; the skimming boat adopts an adjustable march-past lifting board and the tail lifting board, and adjusts the angle of the lifting board according to the difference of the sea condition and the running speed so as to lead the lifting force to reach minimum resistance when the running is stable; and when in turning, the skimming boat realizes coordinative inward inclination turning by means of leftward and rightward differential motion of the march-past lifting board and has minimum turning diameter.

The invention belongs to the technical field of marine antifouling materials, and discloses main chain degradation type zinc polyacrylate resin prepared by a post-grafting method, and a method and application of the main chain degradation type zinc polyacrylate resin. The zinc polyacrylate resin is mainly prepared from the following ingredients in parts by weight: 100 parts of acrylic ester prepolymers, 5 to 50 parts of zinc-containing compounds, 0 to 50 parts of monocarboxylic acid and 5 to 150 parts of organic solvents, wherein the weight parts of the acrylic ester prepolymers are metered by the total weight of monomers reacting in the acrylic ester prepolymers. Resin side chain zinc ester keys and main chain polyester chain segments can be hydrolysed through seawater attack; the problem of the dependence of a traditional self-polishing material on the navigation speed is solved; a coating surface is self-updated through the hydrolysis degradation effect in static seawater; an anti-fouling agent is effectively regulated and controlled to be released at a constant speed rate; the anti-fouling requirements of low-navigation-speed ships and facilities such as offshore production platforms are met; the excellent anti-drag performance is realized. The resin is used for the marine antifouling materials.

The invention provides an under-actuated micro autonomous underwater vehicle (AUV), and belongs to the technical field of underwater robots. The target location of the under-actuated micro AUV is an underwater robot. Modules can be increased and decreased at will according to requirements, and wireless charging and wireless communication functions are achieved. An AUV main carrier is designed to astreamline shape longitudinal section, a stern rudder piece is arranged in a cross shape, a coil capable of performing energy source and information interaction is arranged on a midship section, anda propeller is mounted on the stern end. The under-actuated micro AUV has the beneficial effects that the advantages of rapid recombination of the different modules, convenient mounting, reliable performance, low navigation resistance, reasonable design and the like can be realized, the energy source and information interaction can be carried out without coming out the water surface, and the efficiency of performing offshore exploration by using the AUV is greatly improved.

The invention relates to a high speed boat, and belongs to the technical field of shipping. A boat body of the high speed boat is provided with a fore peak, a passenger compartment and an engine room from head to tail. The dead rise angle of the fore peak is 38-42 degrees. The cross section of the passenger compartment is in a folded angle form, and the outline of the cross section of the passenger compartment is formed by sequentially connecting two lateral sides of two broadsides of the boat body, a bottom side, a first folded side and a second folded side, the bottom edge, the first folded side and the second folded side are located at the bottom of the boat body and arranged sequentially from bottom to top, the bottom side and the second folded side are horizontally arranged at the bottom of the boat body, the bottom side is arranged in the center of the bottom of the boat body, and the second folded side and the lateral sides are adjacent and arranged at the sides of the bottom of the boat body. The included angle between the first folded side and the bottom side and the included angle between the first folded side and the second folded side are both 150-160 degrees. The included angles between the second folded side and the lateral sides are 100-110 degrees. The high speed boat has the advantage of being high in speed.