A new microprocessor based system that combines public address, alarm and communications capabilities for offshore operations has been introduced by U.S. company GAI-Tronics Corporation.  The MarinEx system is designed to meet the routine and emergency communications and safety needs of the offshore oil and gas production market. It will be exhibited at the GAI-Tronic DAC Limited booth [# 824-8] at the Offshore Europe 97 exposition in Aberdeen, Scotland, 9-12 September.