tag:blogger.com,1999:blog-8710611656756005747.post7330941893602031992..comments2024-03-27T09:59:48.839+00:00Comments on Greenwich Industrial History: Docklands History GroupDavid Riddlehttp://www.blogger.com/profile/15841234446226688028noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-8710611656756005747.post-70321504434234619932013-03-01T14:48:59.442+00:002013-03-01T14:48:59.442+00:00How can tide tables be top secret? The data from w...How can tide tables be top secret? The data from which they're calculated are based on the phases of the moon. It's possible to predict all of it for hundreds of years ahead. It can't possibly be kept secret.Alan Burkitt-Grayhttps://www.blogger.com/profile/17344807923068268667noreply@blogger.com