CREATE TABLE table_33411 ("Vessel Name" TEXT, "Type" TEXT, "Built" FLOAT, "Class" TEXT, "Flag" TEXT)

What is the class of vessel of the ship Hyundai Smart?
SELECT "Class" FROM table_33411 WHERE "Vessel Name" = 'hyundai smart'
SELECT "Class" FROM "table_33411" WHERE "Vessel Name" = 'hyundai smart'