CREATE TABLE mission (mission_id DECIMAL, ship_id DECIMAL, code TEXT, launched_year DECIMAL, location TEXT, speed_knots DECIMAL, fate TEXT)
CREATE TABLE ship (ship_id DECIMAL, name TEXT, type TEXT, nationality TEXT, tonnage DECIMAL)

What is the name of the ship with the largest tonnage?
SELECT name FROM ship ORDER BY tonnage DESC LIMIT 1
SELECT "name" FROM "ship" ORDER BY "tonnage" DESC NULLS LAST LIMIT 1