Authorities have given the final go-ahead for a daring attempt tomorrow to pull upright the crippled Costa Concordia cruise liner from the waters off Tuscany where it capsized 20 months ago. Italy's national Civil Protection agency waited until sea and weather conditions were forecast for dawn tomorrow before giving the OK. In a statement today, the Civil Protection agency said conditions indicated it was all right to undertake the operation. Never before have engineers tried to right such a huge ship so close to land. If the operation succeeds, the Concordia will be towed and broken up for scrap.