Towing tanks I and III

Towing tanks I and III

Dynamometers for ship model testing:

  • Strain gauge based dynamometers for towing force, open water tests and propulsion tests
  • Test equipment for fixed and floating structures measuring pressure, forces and moments in six degrees of freedom and displacement in six degrees of freedom.
  • Modular force gauges give flexibility for special instrumentation requirements.
  • 3 dimensional wake measurements by use of 5-holes pitot tubes.
  • Strain gauges and inductive propeller nozzle dynamometers.
  • Selspot opto-electronic system for motion measurements in six degrees of freedom.

All dynamometers are compatible with computerized data collection and reduction.

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Data of tanks I and III

Data of tanks I and III

 

Tank I

Tank III

Tank I + III*

Length:

175 metres

85 metres

260 metres

Width:

10.5 metres

10.5 metres

10.5 metres

Depth:

5.6 metres

10 metres

5.6/10.0 metres

Total weight carriage:

20 tons

4 tons

20/4 tons

Carriage type:

Tubular member truss

Closed beam

Tubular member truss

Wheelbase:

11.04 metres

11.04 metres

11.04 metres

Speed range:

0.02-8 m/sec.

0-0.5 m/sec.

0.02-12 m/sec.

Maximum acceleration:

1 m/sec2

1 m/sec2

1 m/sec2

Driving motors:

4 DC shunt motors in series

2 DC shunt motors

4 DC shunt motors

Power system:

Thyristor controlled

Thyristor controlled

Thyristor controlled

Model size range:

8 metres

-

8 metres

Wavemaker:

.

Double flap Regular and irregular waves

Double flapRegular and irregular waves

Maximum wave height:

.

0.9 metre

0.9 metre

Wave period range:

.

0.8-5 sec.

0.8-5 sec.

Maximum wave steepness:

.

1:10

1:10

Wave spectra:

Computer generated, based on 4000 sine components

* Tank I and III can be used simultaneously and also as one long tank (Tank I + III) by removing the gate (12) and wave absorber (15). In tank I + III either of the two carriages can be used.