The Baltic Naval Institute named after Ushakov has developed an underwater tug with a virtually silent electric motor. The device looks like a cylinder no more than 10 cm high and 30 cm in diameter. When fully equipped, it weighs three kilograms.
Image source: Wikipedia Commons
The battery charge is enough for the tug to operate for about two hours. The device is equipped with a large propeller that drives it.
It is most suitable for combat swimmers from counter-sabotage forces and assets (PDSS) units, and can also be used in surface and underwater robotics. The tug allows you to develop a speed of four knots (7.4 km/h).
Earlier www1.ru reported that the main advantages of the BMD-4M for foreign customers have been named.