content: This book takes place in the 1780s and is about a boy named Nat Bowditch. Nat is great at figures and he has great perseverance. Nat has just been taken out of school to help his dad make barrels for ships. But he wasn't good at it at all. So his dad got him indentured for 9 years at Ropes and Hodges. Afterwards he went on a ship and found out a new way to work lunars. After his first ship ride he went on several others and found over 2,000 mistakes in a book written by scientist. But don't get to atached to the characters.