CREATE TABLE table_77989 ("Date" CLOB, "Ship" CLOB, "Type" CLOB, "Nationality" CLOB, "Tonnage GRT" FLOAT)

what is the most tonnage grt of any ship sunk or captured on 16 jan 16?
SELECT MAX("Tonnage GRT") FROM table_77989 WHERE "Date" = '16 jan 16'
SELECT MAX("Tonnage GRT") FROM "table_77989" WHERE "Date" = '16 jan 16'