Disclosed herein are a leak-proof garbage basket and a water surface cleaning robot. The leak-proof garbage basket comprises a body with an inlet, where the body is provided thereon with a leak-proof baffle rotatably connected with the body and disposed close to the inlet. when being in a first position, the leak-proof baffle closes at least a partial area of the inlet. The garbage basket has a novel structure where a leak-proof baffle is disposed at the inlet, which can effectively prevent garbage in the garbage basket from overflowing through the inlet of the garbage basket on a condition that the water surface cleaning robot is stopped or moved backwards, and thus accomplish the objective of preventing garbage leakage, guarantee the cleaning effect of the water surface cleaning robot, and improve the user experience.

This disclosure describes a configuration of an unmanned aerial vehicle (UAV) that will facilitate extended flight duration. The UAV may have any number of lifting motors. For example, the UAV may include four lifting motors (also known as a quad-copter), eight lifting motors (also known as an octo-copter), etc. Likewise, to improve the efficiency of horizontal flight, the UAV also includes a pivot assembly that may rotate about an axis from a lifting position to a thrusting position. The pivot assembly may include two or more offset motors that generate a differential force that will cause the pivot assembly to rotate between the lifting position and the thrusting position without the need for any additional motors or gears.

System including a dead weight and equipment on a trolling line released from and retrieved to a receiving structure of a vessel, the dead weight including a controllable element for blocking and unblocking the line, so as to immobilize the line relative to the dead weight in the blocked configuration, and to allow the line to run relative to the dead weight in the unblocked configuration; a first detection element for detecting whether or not or not the equipment has moved to a predefined distance from the dead weight; a control element configured, in case of an order to release: in a step 2L, to release the equipment from the structure, in a step 3L, when the first detection element detects the equipment has moved to the predefined distance, to then release the dead weight and control the blocking and unblocking element to shift to the blocked configuration.

The invention relates to a floating vessel for taking liquid samples, comprising a shell (2) that has a hull (3) to be submerged in a liquid medium below the water line and a superstructure (4) arranged above the water line; the vessel also comprises air propulsion means, means for taking and storing samples, and means for remotely controlling the air propulsion means and the sampling means; and the vessel further comprises a secondary detachable shell (32) provided with means for fixing to the shell (2) of the vessel, covering at least the hull of the vessel.

An electrically-propelled marine vehicle and method of making same, including providing a hull of the marine vehicle and mounting a submersible electric thruster to the hull. The thruster includes a stator assembly and a rotor assembly. The rotor assembly forms an internal cavity with a plurality of magnets arranged radially outwardly of the internal cavity. The stator assembly includes electrical windings that are disposed within the internal cavity of the rotor assembly. The thruster is configured to allow the internal cavity to be flooded with water when the thruster is submerged, and the electrical windings are covered by a protective barrier that prevents the flooded water from contacting the windings. The thruster of the marine vehicle is thus water cooled, and the electromotive forces provided by the windings generate sufficient thrust to propel the marine vehicle through the water.

Disclosed herein are a leak-proof garbage basket and a water surface cleaning robot. The leak-proof garbage basket comprises a body with an inlet, where the body is provided thereon with a leak-proof baffle rotatably connected with the body and disposed close to the inlet. when being in a first position, the leak-proof baffle closes at least a partial area of the inlet. The garbage basket has a novel structure where a leak-proof baffle is disposed at the inlet, which can effectively prevent garbage in the garbage basket from overflowing through the inlet of the garbage basket on a condition that the water surface cleaning robot is stopped or moved backwards, and thus accomplish the objective of preventing garbage leakage, guarantee the cleaning effect of the water surface cleaning robot, and improve the user experience.

This disclosure provides an unmanned survey vessel with an anti-overturning structure and an anti-overturning method. The unmanned survey vessel includes a vessel body and a plurality of buoys. The vessel body is a hollow frame of which a middle is provided with a discharge space. An upright rod is vertically fixed at an upper-end of the tail part of the vessel body. A supporting beam is horizontally fixed at an upper-end of the upright rod. The supporting beam extends to a bow of the vessel. A rectangular notch is formed in one end, close to the bow, of the supporting beam. One end close to the bow inside the rectangular notch is rotatably provided with a guide rod through a pin shaft. The plurality of buoys are equally divided into two groups which are adjustably arranged on two side walls in the advancing direction of the vessel body respectively.

The invention relates to a system (1, 2) (1, 4) for handling marine (3) or underwater (5) drones, the system (1, 2) (1, 4) comprising a drone interface module (2, 4) and a floating pontoon (1) with two hulls (11) and an arch (10), the pontoon (1) is catamaran-shaped and delimits a downflooded reception space (17), the arch (10) comprises at least one device (12) for attachment to a winch cable, the pontoon (1) comprises devices (13) for detachable attachment to a drone interface module (2, 4) detachably and interchangeably installed in the receiving space (17), the drone interface modules (2, 4) forming an at least partially flooded docking area (23, 42) for the drone (3, 5), the drone interface modules (2, 4) have a lower portion (22, 43) configured to rest stably on a flat surface after the drone interface module (2, 4) has been removed from the pontoon (1).

A marine emergency rescue transfer system includes a water navigation robot. An attracting device configured to attach and fix with an accident ship is installed on one side of the water navigation robot. An automatic lifting device is installed on the water navigation robot. A fixing sealing device is installed on the automatic lifting device. The automatic lifting device is installed on the automatic lifting device. The fixing sealing device includes a box body and a vacuum pump. The box body defines a cavity. The vacuum pump is configured to pump air or water in the cavity, so the box body is fixed on the accident ship through atmospheric pressure or water pressure. The rescue devices are placed in the fixing sealing device. The remote control grippers are installed on the automatic lifting device. The remote control grippers are configured to grip the rescue devices for transfer operation.

Disclosed herein are a leak-proof garbage basket and a water surface cleaning robot. The leak-proof garbage basket comprises a body with an inlet, where the body is provided thereon with a leak-proof baffle rotatably connected with the body and disposed close to the inlet, when being in a first position, the leak-proof baffle closes at least a partial area of the inlet. The garbage basket has a novel structure where a leak-proof baffle is disposed at the inlet, which can effectively prevent garbage in the garbage basket from overflowing through the inlet of the garbage basket on a condition that the water surface cleaning robot is stopped or moved backwards, and thus accomplish the objective of preventing garbage leakage, guarantee the cleaning effect of the water surface cleaning robot, and improve the user experience.