Hydroacoustic Tanks

These facilities are intended to investigate the efficiency of noise control arrangements and reflecting capacities of hull structures at different water depths.

1. Variable Pressure Tank

• Tank length 25 m,
• Tank diameter 4 m,
• Hydrostatic pressure range (0 - 3)·10⁶ N/m²,
• Maximum specimen size 1,8 x 1,4 x 1 m.

The Variable Pressure Tank serves to measure reflectance, absorptance and loss factors of the tested specimens at various angles of plane acoustic wave incidence, as well as to conduct investigations on acoustic processes in submersible mechanisms and systems.

2. Anechoic Hydroacoustic Tanks

Dimensions:

• 9,8 x 5,7 x 4,7 m;
• 5,0 x 3,0 x 3,0 m

The basins enable to carry out the following kinds of investigations with models and dummies of ship hull structure:

• acoustic radiation properties,
• vibroacoustic characteristics,
• efficiency of self-noise reduction measures on naval and merchant ships.

Maximum specimen weight - 2·10³ kg,

Frequency range (3 - 50)·10³ Hz.