THE Marine Department has awarded Unisys (Hongkong) a $10 million contract to install a maintenance management system for the Government's fleet of more than 400 vessels. ''We will be moving from a virtually manual system to full automation of maintenance management, inventory and purchasing control,'' said Mr Adrian Mnew, the government dockyard's senior planning manager. The department was confident there would be major improvements in efficiency, productivity and cost effectiveness at the dockyard with the introduction of this system, he said. Unisys, a leading information systems company, is scheduled to deliver the system next month, and have it installed at the Information Technology Services Department. The system will be connected through modems to a range of devices including 70 personal computers, 13 hand-held terminals, bar-code readers, scanners and printers at the government dockyard. The contract includes software development. The Marine Department handles a heavy volume of data on its craft, which vary in size between five and 40 metres. Mr Hugh Sutherland, director of the government and commercial sector of business with Unisys, said: ''This is a complex development where the professional services element of the contract represents more than two-thirds of the total contract value.'' At a later stage, the government fleet information system might be enhanced with the addition of a Chinese-language capability, Mr Sutherland said.