Possible Clues:

• For Titanic a disaster any video game might reproduce
• Titanic undertaking
• First time out seeks initial victory on the trip
• Servant, one sent to time the Titanic's trip
• Girl goes on a journey, her first
• Before journey, miss the first course
• First time out
• Help ambassador mature after mishandling, initially, first overseas trip
• First journey, and servant and diplomat get on
• Single type finds journey is momentous enough to demolish a bottle of champagne