The present invention provides a catamaran centralized-transportation fishing ship and a control method, which relate to the technical field of fishing of fishing ships. The catamaran centralized-transportation fishing ship has the fishing assembly and the concave chamber for centralized transportation of fish bodies, which can simultaneously have two functions of fishing and centralized transportation, and has a wide application range. Compared with existing fishing ships for fishing operations, the fishing ship can place the caught fish bodies in the concave chamber, so that the fish bodies can be in original water quality during a transfer process, and thus a survival rate of the fish bodies is increased. Meanwhile, setting of the limiting mechanism can prevent the fish bodies from escaping and increase a fishing amount of a single fishing operation.

A seine net calibration target for an image sensor can include a given set of seine nets connected to form a polygon and another set of seine nets. Each seine net of the other set of seine nets is coupled to a vertex of the polygon at a given end and coupled to a respective one of a plurality of boats at another end. The seine net calibration target can also include a plurality of light sources arranged along a top edge of the given set of seine nets and the other set of seine nets. The plurality of light sources emits light at a predetermined wavelength.

A seine net calibration target for an image sensor can include a given set of seine nets connected to form a polygon and another set of seine nets. Each seine net of the other set of seine nets is coupled to a vertex of the polygon at a given end and coupled to a respective one of a plurality of boats at another end. The seine net calibration target can also include a plurality of light sources arranged along a top edge of the given set of seine nets and the other set of seine nets. The plurality of light sources emits light at a predetermined wavelength.

A fishing device particularly designed for Asian carp fishing, which includes two fishing boats, a collection frame, a fishing net, a display mechanism with a plurality of optical sensors and optical receivers, one support mechanism for one fishing boat and one lifting mechanism for one fishing boat. The lifting mechanism includes a motor, a rotary shaft, a bait holding basket, a plurality of shaft supports and a plurality of rope units. Thus, a selected bait can be used for classification fishing. The quantity of fish catch can be determined timely through the display mechanism. The lifting mechanism allows steading lifting of the fish catch out of the water without introducing any harm to the fish catch. The number and survival rate of the fish catch can be ensured while an effective fishing can be achieved. This fishing device is particularly designed for catching Asian carp fishes.

An outrigger assembly includes an outrigger tube with a longitudinal axis. A swivel ring is disposed on the outrigger tube. The swivel ring is rotatable with respect to the outrigger tube about the longitudinal axis. The swivel ring has a line guide for guiding an outrigger rigging line in a direction along the longitudinal axis.

A fishing device particularly designed for Asian carp fishing, which includes two fishing boats, a collection frame, a fishing net, a display mechanism with a plurality of optical sensors and optical receivers, one support mechanism for one fishing boat and one lifting mechanism for one fishing boat. The lifting mechanism includes a motor, a rotary shaft, a bait holding basket, a plurality of shaft supports and a plurality of rope units. Thus, a selected bait can be used for classification fishing. The quantity of fish catch can be determined timely through the display mechanism. The lifting mechanism allows steading lifting of the fish catch out of the water without introducing any harm to the fish catch. The number and survival rate of the fish catch can be ensured while an effective fishing can be achieved. This fishing device is particularly designed for catching Asian carp fishes.

The invention is an improved telescoping outrigger system that automatically winds and unwinds rigging line as the system collapses and expands. The system includes at least three sections (a base section, a middle section, and a top section) configured to reduce the outrigger in size to about 3.5 feet in a collapsed orientation. The system also includes lower and upper clamping bushings and a tip that each include a roller mechanism to direct and control the winding of line. The system also includes lower and upper internal sleeve and plug assemblies that support the winding and unwinding action of the line during use.

The invention is an improved telescoping outrigger system that automatically winds and unwinds rigging line as the system collapses and expands. The system includes at least three sections (a base section, a middle section, and a top section) configured to reduce the outrigger in size to about 3.5 feet in a collapsed orientation. The system also includes lower and upper clamping bushings and a tip that each include a roller mechanism to direct and control the winding of line. The system also includes lower and upper internal sleeve and plug assemblies that support the winding and unwinding action of the line during use.