desirable, recover the wreck of the Mary Roseand all its contents. There were
a series of cut-off points, and these were essential because there were no funds
available from the local government. The whole operation depended on com-
mercial support for equipment and personnel and the generosity of the public.
Introduction 5
Figure 1Frame P 24. The first frame discovered in 1971
Figure 2P2 in 1974. Biological degradation has severely eroded timber exposed above the
mud, but the migration of iron from the survey nail has inhibited deterioration in
the iron rich zone around the nail