What is the Tonnage of the ship from Canada?
CREATE TABLE table_name_73 (tonnage INTEGER, flag VARCHAR)
SELECT MAX(tonnage) FROM table_name_73 WHERE flag = "canada"
### Context: CREATE TABLE table_name_73 (tonnage INTEGER, flag VARCHAR) ### Question: What is the Tonnage of the ship from Canada? ### Answer: SELECT MAX(tonnage) FROM table_name_73 WHERE flag = "canada"