Outline

1. The tank and anechoic device
   

   Material:

   Ferro-concrete

   Tank demension:

   9m (length) × 9m (width) × 9m (depth)

   Anechoic device:

   Absorbers (Meyer rubber) attached to all sides and bottom (5 surfaces)
2. Transducer Position Determination Control Device
   For observations involving the sample, the sample position can be controlled and determined either automatically or manually. Information on the sample position is displayed in digital format.
   

   Item	Explanation
   Forward unit	Span: 13m   (approx. 4.5m length with 8.5m depth)
   	Speed control:  0～10cm/s (variable speed)
   Lateral unit	Lateral Span: 6m   (approx. 4.5m length with 8.5m depth)
   	Lateral speed: 1cm/s
   Vertical unit	Mounting weight: 500Kg (max.)
   	Vertical motion range: 1.7m above water / deepest dive 4.5m (approx.)
   	Vertical speed: 1cm/s
   	Positioning precision: within±3cm
   Rotation unit	Rotation angle: 370°clockwise, 370°counterclockwise
   	Rotation rate: 3°/s to 0.5°/s  (variable speed)
   	Angular precision: within±0.5°