The invention provides a pressure hull for human occupancy for manned submersible vessels, wherein the hull is formed from acrylic, characterised in that the hull has a circular, or near-circular, cross-section across a major axis and has an elongated, non-uniform profile along the major axis. The invention further provides a manned submersible including a pressure hull.

A completely transparent spherical body is surrounded externally by a plurality of leaf plates arranged in equal spacing along a main outer ring rack of the spherical body. Two rubber tires are included to wrap the spherical body. A rider inside the spherical body pedals to rotate the spherical body forward. A vehicle having the spherical body can be autonomously operated to move on land or water, and in the air. In addition, to operate this vehicle, no specific road or environmental requirement is needed, and no other obstacle, even a traffic accident can stop its movement.

A pressure-resistant hull for a submersible, includes unit hulls, reinforcing ribs, connecting channels, and closure heads. A plurality of unit hulls are provided, and are sequentially strung together spiralling upward or spiralling downward, the closure heads being arranged on the unit hulls at the first position and the last position respectively, an observation window being provided on each unit hull respectively, adjacent two unit hulls in a horizontal direction being respectively connected by means of a reinforcing rib, and at least two connecting channels being provided between adjacent two rings of the unit hulls in the vertical direction. The design method includes using a spiral joining structure to facilitate organic adjustment of the number of unit hulls, thus having better utilization of space and aiding to greatly expand the space. The sensitivity of the limit load to defects is low, increasing axial rigidity, improving the overall pressure-resistive ability.

An underwater observation apparatus includes an observation apparatus body, a weight structure, a coupling device, and a fusion cutting device. The observation apparatus body is configured to house at least a power source, a communication circuit for a communication device, and a signal processing device. The coupling device couples the observation apparatus body with the weight structure via a remote-controlled release structure capable of releasing the observation apparatus body from the weight structure. The underwater observation apparatus also includes a power feeding coil located inside of a glass sphere to generate magnetic flux, and a power receiving coil located outside of the glass sphere. The power receiving coil generates an induced voltage when interlinked by the magnetic flux generated by the power feeding coil. The power receiving coil is configured to supply drive power to the fusion cutting device.

A pressure-resistant hull for a submersible, includes unit hulls, reinforcing ribs, connecting channels, and closure heads. A plurality of unit hulls are provided, and are sequentially strung together spiralling upward or spiralling downward, the closure heads being arranged on the unit hulls at the first position and the last position respectively, an observation window being provided on each unit hull respectively, adjacent two unit hulls in a horizontal direction being respectively connected by means of a reinforcing rib, and at least two connecting channels being provided between adjacent two rings of the unit hulls in the vertical direction. The design method includes using a spiral joining structure to facilitate organic adjustment of the number of unit hulls, thus having better utilization of space and aiding to greatly expand the space. The sensitivity of the limit load to defects is low, increasing axial rigidity, improving the overall pressure-resistive ability.

An image recording method in an image processing apparatus, includes the steps of acquiring, from a plurality of cameras, respective video images which the plurality of cameras start capturing in the sea before a first light that is lit in a first color is turned on and end capturing after a second light that is lit in a second color is turned on after the first tight is turned on, detecting, for each of the video images, a difference in luminance between chronologically adjacent frames in the video image, associating times of frames between the video images on the basis of the difference, and recording the video images with the associated times in a recording medium.

An image recording method in an image processing apparatus, includes the steps of acquiring, from a plurality of cameras, respective video images which the plurality of cameras start capturing in the sea before a first light that is lit in a first color is turned on and end capturing after a second light that is lit in a second color is turned on after the first tight is turned on, detecting, for each of the video images, a difference in luminance between chronologically adjacent frames in the video image, associating times of frames between the video images on the basis of the difference, and recording the video images with the associated times in a recording medium.

Image recording as long as possible during one activity is required in deep sea exploration. Necessity of multi-directional image recording, optical and chemical observations and probing of mineral resources of seabed are also increased. There is no underwater exploration device enable these requirements. It is disclosed that at least one battery-driven underwater exploration body having three pressure-resistant hollow glass spheres for housing an image capturing device, an illumination device, a recording device, an acoustic communication device and a control device controlling thereof and at least one battery body having an approximately the same shape and structure as the underwater exploration body are connected with each other by a connecting tool to provide the connectedly-formed underwater exploration device.

Image recording as long as possible during one activity is required in deep sea exploration. Necessity of multi-directional image recording, optical and chemical observations and probing of mineral resources of seabed are also increased. There is no underwater exploration device enable these requirements. It is disclosed that at least one battery-driven underwater exploration body having three pressure-resistant hollow glass spheres for housing an image capturing device, an illumination device, a recording device, an acoustic communication device and a control device controlling thereof and at least one battery body having an approximately the same shape and structure as the underwater exploration body are connected with each other by a connecting tool to provide the connectedly-formed underwater exploration device.

A completely transparent spherical body is surrounded externally by a plurality of leaf plates arranged in equal spacing along a main outer ring rack of the spherical body. Two rubber tires are included to wrap the spherical body. A rider inside the spherical body pedals to rotate the spherical body forward. A vehicle having the spherical body can be autonomously operated to move on land or water, and in the air. In addition, to operate this vehicle, no specific road or environmental requirement is needed, and no other obstacle, even a traffic accident can stop its movement.