The solution (pun intended) involved tacking sodium dithionite and hydro-chloride onto the antibiotic, making it into a water-soluble salt. (Drugs prepared as hydrochlorides are commonplace.) To keep the chemicals from oxidizing, Adams tested 50 different agents, such as citric acid and ascorbic acid, and played with various ratios until he got the right pH balance.

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The 16th Century hull was first sprayed with chilled fresh water to remove salt and later with a water-soluble wax which prevents shrinkage of the timbers.

BBC: Mary Rose protective jets switched off for first time