Sunken Ship Survey is a Merc Group mission in Xenoblade Chronicles 2. It can be received in the Argentum Trade Guild by talking to Smismi, who pilots the Argentum Titan from the Goldmouth Wheelhouse. The time which it would take to complete this mission is 100 minutes, but can be reduced by "Salvaging Mastery", "Extra-Ancient Wisdom" and "Lockpicking" Field Skills.