Mill Worker

This article says that "The largest ship built at Woodbridge, on a slipway, where the cinema is now, was 663 ton Kingfisher in 1675. These were sizable ships and they were towed, by large rowing boats, to Deptford where they were fitted out in the Royal Dockyard". If the body of the ship was built in Woodbridge why isn't it attributed as being built in Woodbridge?