Hydroacoustic device

A hydroacoustic device adapted to be used in a liquid medium, the hydroacoustic device comprising, disposed in a single waterproof housing:

• a converter of liquid-medium oscillations and electrical signals, the converter being capable of receiving and/or transmitting hydroacoustic signals, the converter having a cylindrical shape,
• a first disk-shaped printed or wire circuit board comprising a receive/transmission signal path connected to a switch cable for providing power and transmitting electrical signals, a diameter of the first disk-shaped printed or wire circuit board being equal to a diameter of the cylindrical-shaped converter, the first disk-shaped printed or wire circuit board being adapted to be used as a structural support element of the single housing,
• a second disk-shaped printed or wire circuit board, the second disk-shaped printed or wire circuit board having a diameter equal to a diameter of the cylindrical-shaped converter, and
• a protective material allowing for a transmission of hydroacoustic oscillations and being a waterproof compound,
• wherein the cylindrical-shaped converter comprises a first base disposed on the first disk-shaped printed or wire circuit board, and a second base disposed on the second disk-shaped printed or wire circuit board,
• wherein each of the first disk-shaped printed or wire circuit board and the second disk-shaped printed or wire circuit board comprises a first outer surface oriented away from the converter and a second inner surface oriented toward the cylindrical-shaped converter,
• wherein the cylindrical-shaped converter comprises a first inner surface oriented toward the first and second disk-shaped printed or wire circuit boards and a second outer surface oriented away from the first and second disk-shaped printed or wire circuit boards,
• wherein the single waterproof housing of the hydroacoustic device comprises:
• the first outer surface of the first disk-shaped printed or wire circuit board,
• the first outer surface of the second disk-shaped printed or wire circuit board,
• the second outer surface of the cylindrical-shaped converter, and
• the protective material which coats all of the first outer surface of the first printed or wire circuit board, the first surface of the second printed or wire circuit board, and the second outer surface of the cylindrical converter,
• wherein the hydroacoustic device comprises a support rod positioned only inside the single housing between the first inner surface of the converter and the second inner surface of the board and extending from the second inner surface of the first disk-shaped printed or wire circuit board to the second inner surface of the second disk-shaped printed or wire circuit board, the support rod being positioned to additionally support a load resulting from an external pressure of the liquid medium to end surfaces of the single housing.