CREATE TABLE table_name_51 (horsepowers INT, year VARCHAR, tonnage VARCHAR)

How many Horsepowers have a Year smaller than 1974, and a Tonnage of 4437?
SELECT SUM(horsepowers) FROM table_name_51 WHERE year < 1974 AND tonnage = 4437
SELECT SUM("horsepowers") FROM "table_name_51" WHERE "tonnage" = 4437 AND "year" < 1974