Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_80 (tonnage_grt INTEGER, date VARCHAR)
### Question:
what is the most tonnage grt of any ship sunk or captured on 16 jan 16?
### Answer:
SELECT MAX(tonnage_grt) FROM table_name_80 WHERE date = "16 jan 16"