The Australian wild abalone industry contributes $200 million annually to the national economy and directly employs an estimated 1,650 people across 5 States (NSW, Victoria, Tasmania, South Australia, and Western Australia). Over 99 percent of production is exported, primarily to north East Asia....

This report deals with the operation of the twin sounder installation, referred to in earlier project reports, during 1979. For the period 1978/79 a grant of $2,750 was recommended for building and testing the prototype device. In order to meet construction deadlines on the vessel "Territory Chief"...