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_52 (tonnage__grt_ INTEGER, date VARCHAR)
### Question:
Which Tonnage (GRT) is the highest one that has a Date of 16 june 1940?
### Answer:
SELECT MAX(tonnage__grt_) FROM table_name_52 WHERE date = "16 june 1940"