The invention relates to marine vessel safety system which ensures that a marine vessel enters a safe state in the event of at least one malfunction in any vessel operation systems and components of the marine vessel. The marine vessel safety system comprises at least one vessel monitoring system, at least one malfunction evaluation system and a safe-state control system.

The invention relates to marine vessel safety system which ensures that a marine vessel enters a safe state in the event of at least one malfunction in any vessel operation systems and components of the marine vessel. The marine vessel safety system comprises at least one vessel monitoring system, at least one malfunction evaluation system and a safe-state control system.

An exemplary autonomous seabased resupply system includes an unmanned blob positioned in a water body, the blob containing fuel, a pump on the blob configured to pump the fuel through a conduit to a craft, and a ballast system operable to change a vertical position of the blob in the water body.

The present invention presents a vehicle that is capable of utilizing different methods of movement by rotating its propellers to accommodate air, ground, or water locomotion. The present invention includes being able to change the direction of the thrust mechanism, so that it creates thrust in the direction of flight, but it is hinged to provide full protection to the blades in the ground modality. In the case of the water implementation, these propellers are also used to provide horizontal thrust to the vessel.

The present invention presents a vehicle that is capable of utilizing different methods of movement by rotating its propellers to accommodate air, ground, or water locomotion. The present invention includes being able to change the direction of the thrust mechanism, so that it creates thrust in the direction of flight, but it is hinged to provide full protection to the blades in the ground modality. In the case of the water implementation, these propellers are also used to provide horizontal thrust to the vessel.

A self-propelled towing simulator for a hydraulic lift system carries a gyro pose control system and a six-degree-of-freedom (DOF) platform to control the overall pose of the simulator, so that the simulator simulates six-DOF motion states including swaying, surging, yawing, rolling, pitching and heaving generated by a mining vessel under the combined action of waves and flows and required by the experimental working conditions; interventions in the pose of the simulator may be positive or negative, so that the simulator may be applied to the uncontrollable natural water bodies so as to approximate to the working conditions of the experimental requirements. The simulator may carry out experiments in open natural water bodies by use of its own autonomous sailing capability under remote wireless control and may acquire parameters such as dynamic characteristics and spatial configuration and the like of a deep-sea mining hydraulic lift subsystem in real time.

A photographing apparatus and an inspection device are provided. The photographing apparatus comprises a camera, a light supplementing structure, and a closed housing; the camera is provided with a lens, and positioned in and connected to the housing; the housing is provided with at least one photographing portion configured to be attached to an object to be photographed, and a space is formed between the lens and the photographing portion; the light supplementing structure is positioned in and connected to the housing, the light supplementing structure is configured to emit light to said object through the space and the photographing portion, and the lens is configured to capture an image of said object via the photographing portion. The inspection device comprises a rack and the photographing apparatus, and the housing is connected to the rack.

A photographing apparatus and an inspection device are provided. The photographing apparatus comprises a camera, a light supplementing structure, and a closed housing; the camera is provided with a lens, and positioned in and connected to the housing; the housing is provided with at least one photographing portion configured to be attached to an object to be photographed, and a space is formed between the lens and the photographing portion; the light supplementing structure is positioned in and connected to the housing, the light supplementing structure is configured to emit light to said object through the space and the photographing portion, and the lens is configured to capture an image of said object via the photographing portion. The inspection device comprises a rack and the photographing apparatus, and the housing is connected to the rack.

The present disclosure includes recreational watercraft including a drop down boarding point. One example includes a hull, an open platform passenger deck, and a plurality of sides, continuous from the hull. The watercraft includes a panel drop down boarding point, hingedly attached horizontally to the hull, for ingress and egress of persons to the watercraft. The panel drop down boarding point includes a first surface interior to the watercraft when the panel drop down boarding point is closed, a second surface, opposite to the first surface and exterior to the watercraft when the panel drop down boarding point is closed, and an aperture formed between the first surface and the second surface and having an opening in an end surface of the panel drop down boarding point. The aperture is sized and shaped to house a retractable ladder and for the ladder to extend out through the opening.

The present disclosure includes recreational watercraft including a drop down boarding point. One example includes a hull, an open platform passenger deck, and a plurality of sides, continuous from the hull. The watercraft includes a panel drop down boarding point, hingedly attached horizontally to the hull, for ingress and egress of persons to the watercraft. The panel drop down boarding point includes a first surface interior to the watercraft when the panel drop down boarding point is closed, a second surface, opposite to the first surface and exterior to the watercraft when the panel drop down boarding point is closed, and an aperture formed between the first surface and the second surface and having an opening in an end surface of the panel drop down boarding point. The aperture is sized and shaped to house a retractable ladder and for the ladder to extend out through the opening.