CREATE TABLE table_68321 ("Name of Ship" TEXT, "Length" TEXT, "Max speed" TEXT, "Crew/Capacity" TEXT, "Class" TEXT, "Builder" TEXT, "Delivery" FLOAT)

Who built the ship that is 42.8 m long and was delivered in 2007?
SELECT "Builder" FROM table_68321 WHERE "Length" = '42.8 m' AND "Delivery" = '2007'
SELECT "Builder" FROM "table_68321" WHERE "Delivery" = '2007' AND "Length" = '42.8 m'