Hutchison Whampoa has joined the bidding for the development of a former United States naval base located off the northern coast of California, San Francisco mayor Willie Brown says. Apart from Hutchison, at least two Taiwanese consortiums had shown interest in the island project, he said yesterday. The 192 hectare site will be returned to the city government when the navy vacates it at the end of this year. State spokesman Kandace Bender said they were already accepting development proposals. She said the idea was to develop the island into a mini-city with parks, houses, restaurants, theatres and a police academy. Mr Brown said Hutchison was also interested in the development of three port sites in San Francisco. 'We have been discussing with Hutchison, Cosco and Evergreen, desiring each of them to fully participate in our ports,' he said. 'Hutchison has the potential in the management of the ports, while the other two can help bring in shipping lines and shipping-related activities.'