Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_77989 ( "Date" text, "Ship" text, "Type" text, "Nationality" text, "Tonnage GRT" real )

### Question ###
what is the most tonnage grt of any ship sunk or captured on 16 jan 16?

### Accurate SQL ###

SELECT MAX("Tonnage GRT") FROM table_77989 WHERE "Date" = '16 jan 16'