DISCOVERY Bay residents face further disruption to their high-speed ferry services to Central when work starts this year on the north Lantau port development. Passengers face longer journeys and rougher crossings and ferries will run a higher risk of a collision. 'The diversion will add three to five minutes to each trip. It will be rougher and uses a less comfortable route and passes through the middle of the Kau Yi dangerous goods anchorage,' said Discovery Bay Transportation Services managing director, Jeremy Marriott. Discovery Bay ferries will also have to use more congested shipping lanes east of Kau Yi Chau and for the first time will navigate around vessels travelling between Peng Chau, Mui Wo and Macau, which operators fear could raise the possibility of a collision. 'We are less than chuffed,' Mr Marriott said. He is calling on the Government to amend its plans and allow the Discovery Bay ferries to continue using the shorter, more direct route during construction of the container terminal complex. Mr Marriott said: 'Why should they block off a huge area of sea - five square miles. Surely contractors do not need the whole area? The Government is using spurious arguments to justify its position.' The longer route will cancel the time savings the service has achieved using a faster and larger catamaran on its Central service. Mr Marriott is also angered by the lack of information available. 'It was supposed to go to the Executive Council last week but we have heard nothing. There is a veil of secrecy about it. We have also tried to get an idea when the diversion comes into effect, but nobody seems to know.' The Government engineer in charge of the the port and airport project, Carl Maunder, said: 'We hope to start Container Terminal 10 by the beginning of 1996. Work could start to impact on services then. 'But the project has not yet been approved by Exco . . . [If the concession is delayed] the ferry company may get away with little effect for some time.'