An underwater information visualization device, which is installed on a moving body such as a ship traveling near a water surface and visualizes and displays information about fish in the water and the seabed using an ultrasonic wave, includes circuitry that generates a pseudo noise sequence signal and a modulation circuit that modulates a carrier signal to form a transmission signal, emits a transmission signal as an ultrasonic wave into the water, receives an echo of an ultrasonic wave, determines an echo corresponding to a transmission signal by subjecting the echo to correlation processing with a pseudo noise sequence signal, displays an output signal. The display simultaneously displays multiple reception signals on a screen, and a period of transmission signals is (2D/Vu) or less when an underwater sonic wave speed is Vu and a distance to the seabed is D.

An underwater information visualization device, which is installed on a moving body such as a ship traveling near a water surface and visualizes and displays information about fish in the water and the seabed using an ultrasonic wave, includes circuitry that generates a pseudo noise sequence signal and a modulation circuit that modulates a carrier signal to form a transmission signal, emits a transmission signal as an ultrasonic wave into the water, receives an echo of an ultrasonic wave, determines an echo corresponding to a transmission signal by subjecting the echo to correlation processing with a pseudo noise sequence signal, displays an output signal. The display simultaneously displays multiple reception signals on a screen, and a period of transmission signals is (2D/Vu) or less when an underwater sonic wave speed is Vu and a distance to the seabed is D.

The purpose is to provide a navigation information device and a navigation information processing method capable of excellently grasping a surrounding situation of own ship and improving a visibility of a detection result by a sonar. The navigation information device is provided with a surrounding information generating module for generating surrounding information around the ship itself, a sonar information generating module for generating sonar information indicating the detection result by the sonar, and a display control module for performing control for enlarging one display area of a surrounding screen on which the surrounding information is displayed and a sonar screen on which the sonar information is displayed and reducing the other display area, as compared with corresponding display area before satisfying the predetermined condition, when the predetermined condition is satisfied.

The purpose is to provide a navigation information device and a navigation information processing method capable of excellently grasping a surrounding situation of own ship and improving a visibility of a detection result by a sonar. The navigation information device is provided with a surrounding information generating module for generating surrounding information around the ship itself, a sonar information generating module for generating sonar information indicating the detection result by the sonar, and a display control module for performing control for enlarging one display area of a surrounding screen on which the surrounding information is displayed and a sonar screen on which the sonar information is displayed and reducing the other display area, as compared with corresponding display area before satisfying the predetermined condition, when the predetermined condition is satisfied.

A sonar target locking system to position a sonar assembly to maintain the sonar array of the sonar assembly pointing at a position of a user set (desired) target even when the watercraft is rotating or moving in various motions. The sonar target locking system includes electro-mechanical assembly that can be steered electrically to maintain the sonar array pointing at the position of the desired target. The system may be activated using at least one of a foot pedal, handheld remote control, or a display of a fish finder head unit. The system may use GPS and IMU inputs to generate control signals to steer the electro-mechanical assembly to maintain the sonar array pointing at the position of the desired target.

A sonar target locking system to position a sonar assembly to maintain the sonar array of the sonar assembly pointing at a position of a user set (desired) target even when the watercraft is rotating or moving in various motions. The sonar target locking system includes electro-mechanical assembly that can be steered electrically to maintain the sonar array pointing at the position of the desired target. The system may be activated using at least one of a foot pedal, handheld remote control, or a display of a fish finder head unit. The system may use GPS and IMU inputs to generate control signals to steer the electro-mechanical assembly to maintain the sonar array pointing at the position of the desired target.

A system and method for tracking marine equipment is provided. Generally, the system and method of the present disclosure are designed to generate indicia corresponding to the inventory level of marine equipment used for a particular marine activity. To facilitate the assignment of indicia reflecting the inventory level of marine equipment used for a marine activity, the system and method of the present disclosure uses a plurality of equipment profiles having a defined lower limit and quantity associated with each piece of marine equipment. The lower limit may be manually input or automatically generated. The quantity may be tracked by the system using equipment transmitters and equipment sensors. In a preferred embodiment, the indicia indicate whether the quantity of a piece of marine equipment has fallen below a certain specified level as defined by the user. Users may purchase new marine equipment from third-party retailers via the user interface.

A system and method for tracking marine equipment is provided. Generally, the system and method of the present disclosure are designed to generate indicia corresponding to the inventory level of marine equipment used for a particular marine activity. To facilitate the assignment of indicia reflecting the inventory level of marine equipment used for a marine activity, the system and method of the present disclosure uses a plurality of equipment profiles having a defined lower limit and quantity associated with each piece of marine equipment. The lower limit may be manually input or automatically generated. The quantity may be tracked by the system using equipment transmitters and equipment sensors. In a preferred embodiment, the indicia indicate whether the quantity of a piece of marine equipment has fallen below a certain specified level as defined by the user. Users may purchase new marine equipment from third-party retailers via the user interface.

A transducer system for locating fish in water beneath ice. A cable coupled with a transducer housing both physically suspends the housing at a selected depth and a selected angular orientation and conveys sonar data to a display unit on the surface. First and second transducers are mounted in the housing and generate the sonar data. The transducers are mounted so as to have different relative angular orientations.

A transducer system for locating fish in water beneath ice. A cable coupled with a transducer housing both physically suspends the housing at a selected depth and a selected angular orientation and conveys sonar data to a display unit on the surface. First and second transducers are mounted in the housing and generate the sonar data. The transducers are mounted so as to have different relative angular orientations.