user: ### NOW ANSWER:
Question: what is the most tonnage grt of any ship sunk or captured on 16 Jan 16?
Columns: ['Date', 'Ship', 'Type', 'Nationality', 'Tonnage GRT']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['11 Jan 16', 'Corbridge', 'Cargo ship', 'United Kingdom', 3687.0]
SQL:

assistant: SELECT MAX("Tonnage GRT") FROM "Table" WHERE "Date" = '16 Jan 16';