The Coastal Engineering and Hydraulics Division of the National
Research Institute for Oceanology (NRIO) undertakes research
projects so as to be able to supply specialised expertise and
consultancy services in coastal engineering with special reference
to the needs in South Africa.
Physical models of harbours, beaches, etc. are built at NRIO and
are used mainly for sediment and breakwater studies. To collect
the vast amount of data in the tests done on these models a
Model Hall Data Acquisition System, MHDAS, was developed
(Holroyd, 1980) to provide a data-logging facility and also to
provide the control signals required to co-ordinate model
operation and thus permit automatic model testing.