M A R I N P.O. Box 28
6700 AA Wageningen The Netherlands
T +31 317 49 39 11 F +31 317 49 32 45
E [email protected] I www.marin.nl
V. 20
14/0
3/07
Seakeeping and Manoeuvring Basin Dimensions
170 40 5 m. The basin is mainly designed for performing
seakeeping, manoeuvring and still water tests with models of
seagoing ships and structures.
Carriage The carriage with a maximum speed of 6 m/s runs over
the total length of the tank and consists of: A mainframe, spanning
the full width of the basin. A sub frame, with a max. speed of 4
m/s along the mainframe. The carriage can follow all movements of
the model in the horizontal plane. With an extra installed
turntable, the system has a rotating arm capability.
Environment Waves At two adjacent sides of the basin, segmented
wave generators consisting of hinged flaps are installed. Each flap
is controlled separately by a driving motor and has a width of 60
cm. The capacity of the wave generator is up to a significant wave
height of 0.45 m at a peak period of 2 seconds. Opposite the wave
generator, passive sinkable wave absorbers are installed. The wave
generator system is equipped with an active wave reflection
compensation feature and higher order wave synthesis
techniques.
Wind
Wind can be simulated by an adjustable 10 m wide platform with
electrical fans.
Motion Control and Dynamic Tracking Free running tests are
performed such that the model follows an arbitrary pre-defined
track (straight or curved) through the basin. The carriage follows
the model during this task. Deviations from the pre-defined track
are minimised through a dynamic positioning feedback loop which
controls the propulsion units, additional thrusters and steering
within a particular control scenario. Motion control is realised by
means of a feedback loop which activates related stabilisation
systems (fins, foils, rudders, etc).
Model size range Model length of 2 - 8 m for moving objects and
up to 10 m for
moored objects. Floating structures of any kind, size depending
on water depth and
wave conditions.
Test capabilities Seakeeping tests in waves and wind from
arbitrary direction. Resistance and self propulsion tests in calm
water and waves. Oscillation (PMM) and rotating arm tests in calm
water and waves
with a restrained model to determine hydrodynamic coefficients.
Captive or free sailing manoeuvring tests in calm water and waves.
Installation and sea transport tests of offshore constructions.
Tests on moored or fixed objects to determine the motions and
loads due to waves and wind.
For more information please contact the department Ships; T +31
317 49 34 72 E [email protected]
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