What was the tonnage on 12 september 1942?
CREATE TABLE table_name_91 (tonnage VARCHAR, date VARCHAR)
SELECT tonnage FROM table_name_91 WHERE date = "12 september 1942"
### Context: CREATE TABLE table_name_91 (tonnage VARCHAR, date VARCHAR) ### Question: What was the tonnage on 12 september 1942? ### Answer: SELECT tonnage FROM table_name_91 WHERE date = "12 september 1942"